19-4780; Rev 1; 6/99 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers Features On-Chip Gain and Offset Divider Networks Provide 15-Bit Accurate Output Ratios On-Chip V+ to GND and V+ to V- Divider Networks Provide 8-Bit Accurate Output Ratios RON: 100 max RON Matching Between Channels: 6 max Charge Injection: 5pC max Low 0.1nA Off Leakage Current Small 20-Pin SSOP/SO/DIP Packages Pin Configurations/ _______________Functional Diagrams V+ 1 20 MAX4539 19 3R R2 LOGIC DECODER 18 17 16 Applications Battery-Operated Equipment Avionics Data-Acquisition Systems Audio-Signal Routing Test Equipment Networking 15 GND VREFHI TEMP. RANGE R2 15R1 4081R1 EN CAL A0 A1 A2 2 3 4 Ordering Information PART 5R LATCH PIN-PACKAGE MAX4539CAP 0C to +70C MAX4539CWP MAX4539CPP MAX4539EAP MAX4539EWP MAX4539EPP MAX4540CAP 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C 0C to +70C 20 SSOP 20 Wide SO 20 Plastic DIP 20 SSOP 20 Wide SO 20 Plastic DIP 20 SSOP MAX4540CWP MAX4540CPP MAX4540EAP MAX4540EWP MAX4540EPP 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C 20 Wide SO 20 Plastic DIP 20 SSOP 20 Wide SO 20 Plastic DIP 15R1 4081R1 REFLO COM NO1 NO2 NO3 NO4 5 6 7 8 9 10 14 13 12 11 NO8 NO7 NO6 NO5 MAX4540 appears at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. MAX4539/MAX4540 General Description The MAX4539/MAX4540 low-voltage, CMOS 8-channel (MAX4539) and dual 4-channel (MAX4540) multiplexers are ideal for precision ADC calibration and system selfmonitoring applications. These calibration multiplexers (cal-muxes) have precision resistor-dividers to generate accurate voltage ratios from an input reference voltage. The reference ratios include 15/4096 and 4081/4096 of the external reference voltage, accurate to 15 bits, and 1/2V+ and 5/8(V+ - V-), accurate to 8 bits. The external reference voltage as well as ground can also be switched to the output. The MAX4539/MAX4540 have enable inputs and address latching. All digital inputs have 0.8V and 2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using a 5V or a single +5V supply. Protection diodes at all inputs provide an ESD rating >2kV. The MAX4539/MAX4540 operate from a single +2.7V to +12V supply, or from dual supplies of 2.7V to 6V. On-resistance (100 max) is matched between switches to 6 max. Each switch can handle Rail-to-Rail(R) analog signals. The off leakage current is 0.1nA at TA = +25C and 2nA at TA = +85C. The MAX4539/MAX4540 are available in small 20-pin DIP, SO, and SSOP packages. ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +13V V- to GND ...............................................................-13V to +0.3V V+ to V-...................................................................-0.3V to +13V CAL, LATCH, A_, EN, NO_, COM_, REFHI, REFLO (Note 1) ........................(V- - 0.3V) to (V+ + 0.3V) Continuous Current (any terminal)....................................20mA Peak Current, NO_ or COM_ (pulsed at 1ms, 10% duty cycle max) ...........................40mA Continuous Power Dissipation (TA = +70C) SSOP (derate 8mW/C above +70C) ..........................640mW Wide SO (derate 8mW/C above +70C)......................800mW Plastic DIP (derate 10.53mW/C above +70C) ...........842mW Operating Temperature Ranges MAX4539C_P/MAX4540C_P................................0C to +70C MAX4539E_P/MAX4540E_P .............................-40C to +85C Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) ............................+300 C Note 1: Signals on NO_, COM_, EN, LATCH, CAL, A_ exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings. Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS--Dual Supplies (V+ = +5V 10%, V- = -5V 10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V SWITCH Analog-Signal Range VCOM_, VNO_ (Note 3) V- RON ICOM_ = 1mA, VNO_ = 3.0V, V+ = 4.5V, V- = -4.5V TA = +25C On-Resistance Matching Between Channels (Note 4) RON ICOM_ = 1mA, VNO_ = 3.0V, V+ = 4.5V, V- = -4.5V TA = +25C On-Resistance Flatness (Note 5) RFLAT NO-Off Leakage Current (Note 6) INO(OFF) COM-Off Leakage Current (Note 6) COM-On Leakage Current (Note 6) 2 45 TA = TMIN to TMAX VCOM_ = 4.5V, VNO_ = 4.5V, V+ = 5.5V, V- = -5.5V 1 TA = TMIN to TMAX VCOM_ = 4.5V, VNO_ = 4.5V, ICOM_(OFF) V+ = 5.5V, V- = -5.5V MAX4539 VCOM_ = 4.5V, VNO_ = 4.5V, ICOM_(ON) V+ = 5.5V, V- = -5.5V MAX4539 MAX4540 MAX4540 TA = +25C TA = TMIN to TMAX TA = +25C 7 10 13 -0.1 0.01 -2 -0.2 -10 TA = +25C -0.1 -0.2 TA = TMIN to TMAX -10 TA = +25C -0.1 0.1 2 0.01 0.2 0.01 0.1 10 -5 TA = +25C TA = TMIN to TMAX 4 6 TA = TMIN to TMAX TA = TMIN to TMAX 75 100 ICOM_ = 1mA; VNO_ = -3V, 0, +3V; TA = +25C V+ = 4.5V; V- = -4.5V TA = TMIN to TMAX On-Resistance MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers nA nA 5 0.01 0.2 0.01 0.1 10 -5 _______________________________________________________________________________________ 5 nA Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers (V+ = +5V 10%, V- = -5V 10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOGIC INPUTS Input High Voltage VIH Input Low Voltage VIL 2.4 Input Current with Input Voltage High IIH VEN = VA_ = VLATCH = VCAL = V+ Input Current with Input Voltage Low IIL VEN = VA_ = VLATCH = VCAL = 0 1.7 V 1.4 0.8 V -0.1 0.01 0.1 A -0.1 0.01 0.1 A 6 V SUPPLY Power-Supply Range Positive Supply Current Negative Supply Current GND Supply Current 2.7 I+ I- IGND VEN = VA_ = VLATCH = VCAL = 0 or V+, V+ = 5.5V, V- = -5.5V (Note 7) TA = +25C -1 TA = TMIN to TMAX -5 VEN = VA_ = VLATCH = VCAL = 0 or V+, V+ = 5.5V, V- = -5.5V (Note 7) TA = +25C -1 TA = TMIN to TMAX -5 VEN = VA_ = VLATCH = VCAL = 0 or V+, V+ = 5.5V, V- = -5.5V (Note 7) TA = +25C -1 TA = TMIN to TMAX -5 0.01 1 A 5 0.01 1 A 5 0.01 1 A 5 DYNAMIC CHARACTERISTICS TA = +25C 100 150 Transition Time tTRANS Figure 1 Break-Before-Make Interval (Note 3) tOPEN Figure 2 Enable Turn-On Time tON Figure 3 Enable Turn-Off Time tOFF Figure 3 Charge Injection (Note 3) VCTE CL = 1nF, VNO_ = 0, Figure 4 TA = +25C 1 Off-Isolation (Note 8) VISO VEN = 0, f = 1MHz, Figure 5 TA = +25C -75 dB Crosstalk Between Channels (Note 9) VCT VEN = 2.4V, f = 1MHz, VGEN = 1Vp-p, Figure 5 TA = +25C -75 dB Logic Input Capacitance CIN f = 1MHz TA = +25C 15 pF COFF f = 1MHz, VEN = VCOM_ = 0, Figure 6 TA = +25C 3 pF COM-Off Capacitance CCOM_(OFF) f = 1MHz, VEN = VCOM_ = 0, Figure 6 TA = +25C 15 pF COM-On Capacitance CCOM_(ON) f = 1MHz, VEN = 2.4V, VCOM_ = 0, Figure 6 TA = +25C 26 pF NO-Off Capacitance TA = TMIN to TMAX 200 TA = +25C 4 TA = TMIN to TMAX 1 TA = +25C 10 75 TA = TMIN to TMAX TA = +25C ns 115 175 50 TA = TMIN to TMAX ns 100 120 5 ns ns pC _______________________________________________________________________________________ 3 MAX4539/MAX4540 ELECTRICAL CHARACTERISTICS--Dual Supplies (continued) MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICS--Dual Supplies (continued) (V+ = +5V 10%, V- = -5V 10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX 45 70 UNITS LATCH TIMING (Note 3) Setup Time tS Figure 7 Hold Time tH Figure 7 Pulse Width, Latch Enable tMPW Figure 7 Enable Setup Time tES Figure 8 TA = +25C TA = TMIN to TMAX 80 TA = +25C -10 TA = TMIN to TMAX -10 TA = +25C 30 TA = TMIN to TMAX 40 TA = +25C 0 ns 15 15 TA = TMIN to TMAX ns ns 30 40 ns INTERNAL DIVIDERS Offset Divider Output Gain Divider Output (V+ / 2) Divider Output (V+ - V-) Divider Output VREF = 4.096V, REFHI = 4.096V, REFLO = GND VREF = 4.096V, REFHI = 4.096V, REFLO = GND TA = +25C 14.9/ 4096 15/ 4096 15.1/ 4096 TA = TMIN to TMAX 14.9/ 4096 15/ 4096 15.1/ 4096 TA = +25C 4080.9/ 4096 4081/ 4096 4081.1/ 4096 TA = TMIN to TMAX 4080.9/ 4096 4081/ 4096 4081.1/ 4096 TA = +25C 2032/ 4096 2048/ 4096 2064/ 4096 TA = TMIN to TMAX 2032/ 4096 2048/ 4096 2064/ 4096 TA = +25C 2544/ 4096 2560/ 4096 2576/ 4096 TA = TMIN to TMAX 2544/ 4096 2560/ 4096 2576/ 4096 LSB LSB Referenced to GND LSB Referenced to V- LSB Output Resistance Offset Divider (Note 3) TA = +25C 400 800 Output Resistance Gain Divider (Note 3) TA = +25C 400 800 Output Resistance (V+ / 2) Divider (Note 3) TA = +25C 6 9 k Output Resistance (V+ - V-) Divider (Note 3) TA = +25C 6 9 k Output Resistance (REFHI, REFLO, GND) (Note 3) TA = +25C 400 800 Additional Positive Supply Current (V+ / 2) divider active, VIH = V+, VIL = 0 (Note 3) TA = +25C V+ / 24k V+ / 13k mA 4 _______________________________________________________________________________________ Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers (V+ = +5V 10%, V- = -5V 10%, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS Additional Positive Supply Current (Note 3) (V+ - V-) divider active, VIH = V+, VIL = 0 Additional Negative Supply Current (V+ - V-) divider active, VIH = V+, VIL = 0 (Note 3) MIN TYP mA TA = +25C (V+ - V-)/ (V+ - V-)/ 24k 13k mA V- 0.3 Offset divider active, gain divider active UNITS TA = +25C REFHI, REFLO Input Range (Note 3) Input Resistance (REFHI, REFLO) (Note 3) MAX (V+ - V-)/ (V+ - V-)/ 24k 13k TA = +25C 25 V+ + 0.3 40 V k ELECTRICAL CHARACTERISTICS--Single +5V Supply (V+ = +5V 10%, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V SWITCH Analog-Signal Range VNO_, VCOM_ (Note 3) 0 RON ICOM_ = 1mA, VNO_ = 3.0V, V+ = 4.5V TA = +25C On-Resistance Matching Between Channels (Notes 3, 4) RON ICOM_ = 1mA, VNO_ = 3.0V, V+ = 4.5V TA = +25C On-Resistance Flatness (Note 5) RFLAT NO-Off Leakage Current (Notes 6, 10) INO(OFF) On-Resistance COM-Off Leakage Current (Notes 6, 10) COM-On Leakage Current (Notes 6, 10) ICOM_ = 1mA; VNO_ = 3V, 2V, 1V; V+ = 4.5V VCOM_ = 1V, 4.5V; VNO_ = 4.5V, 1V; V+ = 5.5V VCOM_ = 4.5V, 1V; MAX4539 ICOM_(OFF) VNO_ = 1V, 4.5V; V+ = 5.5V MAX4540 VCOM_ = 4.5V, ICOM_(ON) VNO_ = 4.5V, V+ = 5.5V MAX4539 MAX4540 80 TA = TMIN to TMAX 200 2 TA = TMIN to TMAX 8 0.1 -2 2 TA = +25C -0.2 0.2 TA = TMIN to TMAX -10 10 TA = +25C -0.1 0.1 TA = TMIN to TMAX TA = +25C -5 5 -0.2 0.2 TA = TMIN to TMAX -10 10 TA = +25C -0.1 0.1 -5 5 TA = TMIN to TMAX 8 -0.1 TA = TMIN to TMAX 12 TA = +25C TA = TMIN to TMAX TA = +25C 150 nA nA nA _______________________________________________________________________________________ 5 MAX4539/MAX4540 ELECTRICAL CHARACTERISTICS--Dual Supplies (continued) MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICS--Single +5V Supply (continued) (V+ = +5V 10%, V- = 0, VIH = 2.4V, VIL = 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOGIC INPUTS (Note 3) Input High Voltage VIH Input Low Voltage VIL 2.4 Input Current with Input Voltage High IIH VEN = VA_ = VLATCH = VCAL = V+ Input Current with Input Voltage Low IIL VEN = VA_ = VLATCH = VCAL = 0 1.6 1.4 V 0.8 V -0.1 0.1 A -0.1 0.1 A 2.7 12 V SUPPLY Power-Supply Range Positive Supply Current (Note 3) GND Supply Current (Note 3) I+ IGND VEN = VA_ = VLATCH = VCAL = 0 or V+, V+ = 5.5V TA = +25C -1 TA = TMIN to TMAX -5 VEN = VA_ = VLATCH = VCAL = 0 or V+, V+ = 5.5V TA = +25C -1 TA = TMIN to TMAX -10 0.01 1 A 5 0.01 1 10 A DYNAMIC CHARACTERISTICS (Note 3) Transition Time tTRANS Figure 1 Break-Before-Make Interval tOPEN Figure 2 Enable Turn-On Time tON Figure 3 Enable Turn-Off Time tOFF Figure 3 Charge Injection VCTE CL = 1nF, VNO_ = 0, Figure 4 TA = +25C 150 TA = TMIN to TMAX 200 250 TA = +25C 4 TA = TMIN to TMAX 1 TA = +25C 10 115 TA = TMIN to TMAX ns 150 200 TA = +25C 60 TA = TMIN to TMAX 100 130 TA = +25C 1 ns 5 ns ns pC LATCH TIMING (Note 3) Setup Time tS Figure 7 Hold Time tH Figure 7 Pulse Width, Latch Enable tMPW Figure 7 Enable Setup Time tES Figure 8 6 TA = +25C 70 TA = TMIN to TMAX 80 TA = +25C -10 TA = TMIN to TMAX -10 TA = +25C 30 TA = TMIN to TMAX 40 TA = +25C 0 ns 15 15 TA = TMIN to TMAX _______________________________________________________________________________________ ns ns 30 40 ns Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers (V+ = +2.7V to +3.6V, V- = 0, VIH = 2.4V, VIL = 0.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V SWITCH Analog-Signal Range On-Resistance VCOM_ RON (Note 3) ICOM_ = 0.2mA, VNO_ = 1.5V, V+ = 2.7V 0 TA = +25C 220 TA = TMIN to TMAX 500 600 LOGIC INPUTS (Note 3) Input High Voltage VIH Input Low Voltage VIL 2.4 1.1 V 1.1 0.5 V DYNAMIC (Note 3) Transition Time tTRANS VNO1 = 1.5V, VNO8 = 0, Figure 1 TA = +25C 260 400 ns Enable Turn-On Time tON VNO1 = 1.5V, Figure 3 TA = +25C 220 350 ns Enable Turn-Off Time tOFF VNO = 1.5V, Figure 3 TA = +25C 100 150 ns 100 ns LATCH TIMING (Note 3) Setup Time tS Figure 7 TA = +25C Hold Time tH Figure 7 TA = +25C -10 Pulse Width, Latch Enable tMPW Figure 7 TA = +25C 40 Enable Setup Time tES Figure 8 TA = +25C 0 ns ns 50 ns Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. Note 3: Guaranteed by design. Note 4: RON = RON(MAX) - RON(MIN). Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. Note 6: Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at TA = +25C. Note 7: If the logic inputs can float during power-on, connect a 1M pull-up from LATCH to V+; see Applications Information section. Note 8: Off Isolation = 20log10 (VCOM/VNO), VCOM = output, VNO = input to off switch. Note 9: Between any two switches. Note 10: Leakage testing with a single supply is guaranteed by testing with dual supplies. _______________________________________________________________________________________ 7 MAX4539/MAX4540 ELECTRICAL CHARACTERISTICS--Single +3V Supply Typical Operating Characteristics (TA = +25C, unless otherwise noted.) ON-RESISTANCE vs. VCOM AND TEMPERATURE (SINGLE SUPPLY) COM(ON) 10p 40 60 TA = +25C 50 TA = -40C TA = +25C 20 10 V+ = 5V V- = 0 10 0 10f 0 20 40 60 80 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCOM (V) ON-RESISTANCE vs. VCOM (DUAL SUPPLIES) ON-RESISTANCE vs. VCOM (SINGLE SUPPLY) 150 80 130 RON () 90 V+ = 2.7V V- = -2.7V 70 V+ = 3V V- = -3V 60 V- = 0 V+ = 2.7V 170 V+ = 5V V- = -5V V+ = 3V 110 -4 -3 -2 -1 0 1 2 3 4 1 2 3 4 5 6 7 8 9 140 5 0.1p 10 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C) CHARGE INJECTION vs. VCOM 10 MAX4539-08 MAX4539-07 80 4 I- ON/OFF TIME vs. TEMPERATURE ON/OFF TIME vs. SUPPLY VOLTAGE 160 3 V+ = 5V V- = -5V VCOM (V) 100 2 1p V+ = 10V VCOM (V) 180 1 10p V+ = 7.5V 0 5 0 100p 30 -5 -1 10n V+ = 5V 50 30 -2 I+ 70 40 -3 1n 90 50 -4 SUPPLY CURRENT vs. TEMPERATURE 100n I+ I- (A) V+ = 2.4V V- = -2.4V -5 VCOM (V) 190 MAX4539-04 110 100 0 100 120 TEMPERATURE (C) V+ = 5V V- = -5V MAX4539-09 -20 V+ = 5V V- = -5V 0 MAX4539-05 -40 TA = -40C 20 30 1p NO(OFF) 8 tON 60 tON 100 80 6 tOFF 40 Q (pC) tON, tOFF (ns) 120 60 20 2 3 4 V+, V- (V) 5 SINGLE SUPPLY V+ = 5V -2 -40 0 4 0 -20 20 DUAL SUPPLIES V+ = 5V, V- = -5V 2 0 tOFF 40 8 30 40 100f RON () TA = +70C 70 COM(OFF) 100p TA = +85C TA = +70C 50 RON () 1n RON () LEAKAGE CURRENT (A) 80 MAX4539-03 TA = +85C 90 60 MAX4539-02 V+ = 5V V- = -5V 10n 100 MAX4539-01 100n ON-RESISTANCE vs. VCOM AND TEMPERATURE (DUAL SUPPLIES) MAX4539-06 LEAKAGE CURRENT vs. TEMPERATURE tON, tOFF (ns) MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers -40 -20 0 20 40 60 TEMPERATURE (C) 80 100 -5 -4 -3 -2 -1 0 1 VCOM (V) _______________________________________________________________________________________ 2 3 4 5 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers 60 ON PHASE 20 -50 -20 -60 -60 -70 -100 OFF ISOLATION -80 0.1 1 10 0.01 (V+ - V-) ROUT V+ = 5V V- = -5V 10 100 1k 10k -20 -40 100k V+ = 5V V- = -5V 80 100 2558.3 2558.2 VREFHI = 4.096V VREFLO = 0 V+ = 5V V- = -5V 4081.08 4081.06 OUTPUT RATIO (LSB) 2558.4 OUTPUT RATIO (LSB) 60 4081.10 MAX4539-13b 2558.5 MAX4539-13a 40 20 GAIN DIVIDER OUTPUT vs. TEMPERATURE (V+ - V-) DIVIDER OUTPUT vs. TEMPERATURE 2049.5 0 TEMPERATURE (C) FREQUENCY (Hz) V+ = +5V V- = -5V MAX4539-12 5830 5680 0.001 (V+ / 2) DIVIDER OUTPUT vs. TEMPERATURE OUTPUT RATIO (LSB) 5880 5730 FREQUENCY (MHz) 2050.0 5930 5780 V+ = 5V -140 V- = -5V -180 100 1000 -90 (V+ / 2) ROUT 5980 2558.1 4081.04 MAX4539-14 -30 6030 ROUT () 100 THD (%) -20 -40 V+ = 5V V- = -5V 600 IN/OUT VIN = 5Vp-p 140 PHASE (DEGREES) LOSS (dB) -10 0.1 180 INSERTION LOSS MAX4539-11 MAX4539-10 0 ROUT vs. TEMPERATURE (V+ / 2 DIVIDER AND V+ - V- DIVIDER) TOTAL HARMONIC DISTORTION vs. FREQUENCY FREQUENCY RESPONSE 4081.02 4081.00 4080.98 4080.96 4080.94 4080.92 20 0 40 60 80 2558.0 -40 100 4080.90 -20 OFFSET DIVIDER OUTPUT vs. TEMPERATURE 100 -40 15.00 14.98 14.96 4081.06 15.06 4081.04 4081.02 4081.00 4080.98 4080.96 15.02 15.00 14.98 14.96 14.94 14.92 14.92 4080.90 40 60 TEMPERATURE (C) 80 100 100 15.04 4080.92 20 80 VREFLO = 0 V+ = 5V V- = -5V or 0 15.08 14.94 0 60 40 20 OFFSET DIVIDER OUTPUT vs. REFHI 4080.94 -20 0 15.10 OUTPUT RATIO (LSB) 15.02 14.90 -40 -20 TEMPERATURE (C) VREFLO = 0 V+ = 5V V- = -5V or 0 4081.08 OUTPUT RATIO (LSB) OUTPUT RATIO (LSB) 80 4081.10 MAX4539-15 VREFHI = 4.096V VREFLO = 0 V+ = 5V V- = -5V 15.06 60 GAIN DIVIDER OUTPUT vs. REFHI 15.10 15.04 40 20 TEMPERATURE (C) TEMPERATURE (C) 15.08 0 MAX4539-17 -20 MAX4539-16 2049.0 -40 14.90 2.0 2.5 3.0 3.5 REFHI (V) 4.0 4.5 5.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 REFHI (V) _______________________________________________________________________________________ 9 MAX4539/MAX4540 Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) ROUT vs. TEMPERATURE (OFFSET DIVIDER AND GAIN DIVIDER) 2054 230 220 OFFSET DIVIDER 210 V+ = 5V V- = -5V VREFHI = 4.096V VREFLO = 0 200 190 OUTPUT RATIO (LSB) GAIN DIVIDER OUTPUT RATIO (LSB) 2053 240 2052 2051 2050 2049 2048 -20 0 20 40 60 2555 2047 100 80 2560 2046 2550 2045 -40 2565 MAX4539-19b 2055 MAX4539-19a 250 (V+ - V-) DIVIDER OUTPUT vs. SUPPLY VOLTAGE (V+ / 2) DIVIDER OUTPUT vs. SUPPLY VOLTAGE MAX4539-18 260 ROUT () MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers TEMPERATURE (C) 2 3 4 5 6 1 2 3 4 5 V+, V- (V) V+, V- (V) Pin Descriptions MAX4539 (Single 8-to-1 Cal-Mux) 10 PIN NAME 1 V+ 2 GND 3 V- FUNCTION MAX4540 (Dual 4-to-1 Cal-Mux) PIN NAME Positive Supply Voltage 1 V+ Ground 2 GND Negative Supply Voltage 3 V- FUNCTION Positive Supply Voltage Ground Negative Supply Voltage 4 REFHI Reference High Voltage Input 4 REFHI Reference High Voltage Input 5 REFLO Reference Low Voltage Input 5 REFLO Reference Low Voltage Input 6 COM Multiplexer Output 6 COMA Multiplexer Output A 7 NO1 Channel Input 1 7 NO1A Channel Input 1A 8 NO2 Channel Input 2 8 NO2A Channel Input 2A 9 NO3 Channel Input 3 9 NO3A Channel Input 3A 10 NO4 Channel Input 4 10 NO4A Channel Input 4A 11 NO5 Channel Input 5 11 NO1B Channel Input 1B 12 NO6 Channel Input 6 12 NO2B Channel Input 2B 13 NO7 Channel Input 7 13 NO3B Channel Input 3B 14 NO8 Channel Input 8 14 NO4B Channel Input 4B 15 A2 Address Bit 2 15 COMB Multiplexer Output B 16 A1 Address Bit 1 16 A1 Address Bit 1 17 A0 Address Bit 0 17 A0 Address Bit 0 18 CAL Calibration Control Input 18 CAL 19 EN Multiplexer Enable 19 EN 20 LATCH Address Latch Control Input 20 LATCH Calibration Control Input Multiplexer Enable Address Latch Control Input ______________________________________________________________________________________ Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers MAX4539 (Single 8-to-1 Cal-Mux) CAL A2 A1 A0 EN LATCH COM X X X X 0 X All switches and dividers open. COM is high-Z. Latch contents set to all 1's. X X X X 1 1 State is latched when LATCH is high. 0 0 0 0 1 0 NO1 0 0 0 1 1 0 NO2 0 0 1 0 1 0 NO3 0 0 1 1 1 0 NO4 0 1 0 0 1 0 NO5 0 1 0 1 1 0 NO6 0 1 1 0 1 0 NO7 0 1 1 1 1 0 NO8 1 0 0 0 1 0 (V+ / 2) Divider Mode, VCOM = 2048/4096 V+ 1 0 0 1 1 0 REFHI 1 0 1 0 1 0 REFLO 1 0 1 1 1 0 (V+ - V-) Divider Mode , VCOM = 2560/4096 (V+ - V-) 1 1 0 0 1 0 GND 1 1 0 1 1 0 Gain Divider Mode, VCOM = 4081/4096 (VREFHI - VREFLO) 1 1 1 0 1 0 Offset Divider Mode, VCOM = 15/4096 (VREFHI - VREFLO) 1 1 1 1 1 0 All switches and dividers open. COM is high-Z. X = Don't care MAX4540 (Dual 4-to-1 Cal-Mux) CAL A1 A0 EN LATCH X X X 0 X All switches and dividers open. COMA is high-Z. All switches and dividers open. COMB is high-Z. X X X 1 1 State is latched State is latched 0 0 0 1 0 NO1A NO1B 0 0 1 1 0 NO2A NO2B 0 1 0 1 0 NO3A NO3B 0 1 1 1 0 NO4A NO4B 1 0 0 1 0 GND GND 1 0 1 1 0 Gain Divider Mode REFLO 1 1 0 1 0 Offset Divider Mode REFLO 0 All switches and dividers open. COMA is high-Z. All switches and dividers open. COMB is high-Z. 1 1 1 1 COMA COMB X = Don't care ______________________________________________________________________________________ 11 MAX4539/MAX4540 Truth Tables MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers Detailed Description The MAX4539/MAX4540 are multiplexers with additional calibration features. Internal resistor-dividers generate accurate voltage ratios from an external voltage reference, allowing zero- and full-scale calibration of ADC systems as well as facilitation of system self-monitoring. To access the resistor-dividers, assert the CAL pin. When CAL and ENABLE are asserted, the three address pins select one of the various resistor-divider or external reference outputs. The MAX4539/MAX4540 also contain a LATCH input that allows the state of the CAL and address signals to be captured. Calibration Functions The Gain Divider, Offset Divider, REFHI and REFLO modes allow calibration of offset and gain errors in ADC systems. The Gain Divider mode outputs a voltage ratio that is 4081/4096 of VREFHI - VREFLO, accurate to 0.1/4096, or better than 15 bits. The Offset Divider mode outputs a voltage ratio that is 15/4096 of VREFHI - VREFLO, also accurate to 0.1/4096. The REFHI mode allows the voltage on the REFHI pin to be switched to the output. The REFLO mode allows the voltage on the REFLO pin to be switched to the output. Self-Monitoring Functions The self-monitoring functions are intended to allow an ADC to measure its own supply voltage. The MAX4539 has an internal divide-by-two resistor string between V+ and GND that is accurate to 8 bits (16/4096). It also has a 5/8 resistor string between V+ and V- that is also accurate to 8 bits. This divider string allows measurement of the negative supply with a unipolar ADC. GND can also be switched to the output, eliminating the need for an additional multiplexer channel. Applications Information The MAX4539/MAX4540's construction is typical of most CMOS analog switches. There are three supply pins: V+, V-, and GND. The positive and negative power supplies provide drive to the internal CMOS switches and set the limits of the analog voltage on any switch. Reverse-biased ESD protection diodes are internally connected between each analog signal pin and both V+ and V-. If the voltage on any pin exceeds V+ or V-, one of these diodes will conduct. During normal operation, these reverse-biased ESD diodes leak, forming the only current drawn from V-. Virtually all the analog-leakage current is through the ESD diodes. Although the ESD diodes on a given signal pin are identical, and therefore fairly well balanced, they are reverse-biased differently. Each is 12 biased by either V+ or V- and the analog signal. This means their leakage varies as the signal varies. The difference in the two-diode leakage from the signal path to the V+ and V- pins constitutes the analogsignal path leakage current. All analog-leakage current flows to the supply terminals, not to the other switch terminal, which explains how both sides of a given switch can show leakage currents of either the same or opposite polarity. There is no connection between the analog-signal paths and GND. The analog-signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase with V+ and V- by the logic-level translators. V+ and GND power the internal logic and logic-level translators and set the input-logic thresholds. The logiclevel translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switches. This drive signal is the only connection between the logic supplies and the analog supplies. All pins have ESD protection to V+ and to V-. Increasing V- has no effect on the logic-level thresholds, but it does increase the drive to the P-channel switches, which reduces their on-resistance. V- also sets the negative limit of the analog-signal voltage. The logic-level thresholds are CMOS- and TTL- compatible when V+ is +5V. As V+ is raised, the threshold increases slightly; when V+ reaches +12V, the level threshold is about 3.2V. Although that is above the TTL output high-level minimum of 2.4V, it is still compatible with CMOS outputs. Bipolar-Supply Operation The MAX4539/MAX4540 operate with bipolar supplies between 2.7V and 6V. The V+ and V- supplies need not be symmetrical, but their sum cannot exceed the absolute maximum rating of 13V. Note: Do not connect the MAX4539/MAX4540 V+ pin to +3V AND connect the logic-level input pins to TTL logic-level signals. TTL logic-level outputs can exceed the absolute maximum ratings, which will cause damage to the part and/or external circuits. Caution: The absolute maximum V+ to V- differential voltage is 13V. Typical "6-Volt" or "12-Volt" supplies with 10% tolerances can be as high as 13.2V. This voltage can damage the MAX4539/MAX4540. Even 5% tolerance supplies may have overshoot or noise spikes that exceed 13V. ______________________________________________________________________________________ Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers the internal dividers connected between the supplies may inadvertently turn on, causing higher supply current (~200A supply current) when the enable input is toggled. Avoid this condition by ensuring that EN pin stays low until the remaining logic inputs are valid. To accomplish this, connect a resistor from EN to ground or apply a low voltage to EN before the other logic inputs go high. Power Off When power to the MAX4539/MAX4540 is off (i.e., V+ = V- = 0), the Absolute Maximum Ratings still apply. This means that neither logic-level inputs on NO_ nor signals on COM_ can exceed 0.3V. Voltages beyond 0.3V cause the internal ESD-protection diodes to conduct, and the parts can be damaged if excessive current flows. Power Up During power up, on-chip latches will strobe whatever addresses are present if EN goes high before LATCH reaches a logic high. When this condition occurs, one of Chip Information TRANSISTOR COUNT: 561 Test Circuits/Timing Diagrams +5V V+ NO1 EN LATCH CAL V+ A0 A1 A2 +3V NO2-NO7 MAX4539 NO8 -3V VCOM COM GND V- 50 35pF 300 -5V LOGIC INPUT VEN V+ 50% 50% 0V VNO1, VNO1B SWITCH OUTPUT VCOM +5V tR < 20ns tF < 20ns 90% 0V 90% V+ V+ NO1B NO2B-NO3B NO1A-NO2A +3V MAX4540 NO4B -3V EN LATCH CAL A0 VNO8, VNO4B A1 GND tTRANS COMB V- VCOM 300 50 tTRANS 35pF -5V Figure 1. Transition Time ______________________________________________________________________________________ 13 MAX4539/MAX4540 Single-Supply Operation The MAX4539/MAX4540 operate from a single supply between +2.7V and +12V when V- is connected to GND. All of the bipolar precautions must be observed. However, these parts are optimized for 5V operation, and most AC and DC characteristics are degraded significantly when departing from 5V. As the overall supply voltage (V+ to V-) is lowered, switching speed, on-resistance, off isolation, and distortion will degrade. (see the Typical Operating Characteristics section). Single-supply operation also limits signal levels and interferes with ground referenced signals. When V- = 0, AC signals are limited to -0.3V. Voltages below -0.3V can be clipped by the internal ESD-protection diodes, and the parts can be damaged if excessive current flows. Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers MAX4539/MAX4540 Test Circuits/Timing Diagrams (continued) +5V V+ V+ EN LOGIC INPUT VA LATCH NO1-NO8 CAL A0 VA MAX4539 A2 50% 0V 90% COM GND VCOM V35pF 300 SWITCH OUTPUT VCOM tOPEN 0V -5V +5V V+ V+ EN LATCH NO1A-NO4B NO1B-NO4B CAL A0 VA LOGIC INPUT VA +3V MAX4540 A1 tR < 20ns t < 20ns 50% F V+ 50% 0V 0.8VNO_ 90% COMA V- GND 50 50% tR < 20ns tF < 20ns 0.8VNO_ A1 50 +3V V+ VCOM 35pF 300 90% SWITCH OUTPUT VCOM tOPEN 0V -5V Figure 2. Break-Before-Make Interval +5V VEN V+ EN NO1 LATCH CAL +3V NO2-NO8 VEN MAX4539 A0 A1 A2 GND 50 COM 35pF 50 NO1B +3V 0V tON MAX4540 A1 GND 0.8(VNO1, VNO1B) VCOM 90% 90% NO2B-NO4B NO1A-NO4A LATCH CAL A0 -5V V+ EN 50% VCOM 300 VEN 50% COMB V- VCOM 300 35pF -5V Figure 3. Enable Switching Time 14 tR < 20ns tF < 20ns 0V V- +5V V+ ______________________________________________________________________________________ tOFF Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers +5V RS NO_ V+ LOGIC INPUT VEN EN VS MAX4539 A0 A1 A2 CHANNEL SELECT CAL LATCH GND COM V+ ON OFF ON 0V VCOM VOUT CL = 1nF VCOM VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. V-5V Q = VOUT x CL +5V RS NO_ V+ LOGIC INPUT VEN EN VS MAX4540 A0 CHANNEL SELECT COMA ON OFF ON 0V VCOM_ A1 CAL LATCH GND V+ VOUT CL = 1nF VCOM VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. V-5V Q = VOUT x CL Figure 4. Charge Injection +5V 10nF V+ VIN V+ EN V OFF ISOLATION = 20log OUT VIN NO_ MAX4539 MAX4540 V+ NETWORK ANALYZER 50 50 A VCOM V CROSSTALK = 20log OUT VIN MEAS. REF COM_ LATCH CAL V- GND 50 50 10nF +5V NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" TERMINAL ON EACH SWITCH. ON LOSS IS MEASURED BETWEEN COM AND "ON" TERMINAL ON EACH SWITCH. Figure 5. Off-Isolation/Crosstalk ______________________________________________________________________________________ 15 MAX4539/MAX4540 Test Circuits/Timing Diagrams (continued) MAX4539/MAX4540 Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers Test Circuits/Timing Diagrams (continued) +5V +5V V+ V+ A2 CHANNEL SELECT NO1A NO1 A1 1MHz CAPACITANCE ANALYZER NO8 MAX4539 A0 CHANNEL SELECT COM A1 MAX4540 NO4A A0 COMA 1MHz CAPACITANCE ANALYZER f = 1MHz f = 1MHz CAL, LATCH, GND EN CAL, LATCH, GND EN V- V- -5V -5V Figure 6. NO_/COM_ Capacitance V+ LATCH 50% 50% EN V+ LATCH +3V NO2 NO1, NO3-NO8 A0 A1 A2 CAL 50% EN MAX4539 t ES COM GND V- Figure 8. Enable Setup Time V- LATCH 50% t MPW tS 50% tH ADDRESS (A_) VIH VIL Figure 7. Setup Time, Hold Time, Latch Pulse Width 16 ______________________________________________________________________________________ Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers V+ GND VREFHI 1 2 3 4 MAX4540 LOGIC DECODER 20 19 18 17 16 LATCH EN CAL A0 A1 15R 4081R 4081R REFLO COMA NO1A NO2A NO3A NO4A 5 15R 15 6 7 14 8 13 12 9 10 11 COMB NO4B NO3B NO2B NO1B ______________________________________________________________________________________ 17 MAX4539/MAX4540 Pin Configurations/Functional Diagrams (continued) Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers SSOP.EPS MAX4539/MAX4540 Package Information 18 ______________________________________________________________________________________ Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers PDIPN.EPS ______________________________________________________________________________________ 19 MAX4539/MAX4540 Package Information (continued) Low-Voltage, Single 8-to-1 and Dual 4-to-1 Cal-Multiplexers SOICW.EPS MAX4539/MAX4540 Package Information (continued) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.