19-1396; Rev 0; 10/98 MA AXILM High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers General Description The MAX4578/MAX4579 are high-voltage, 8-channel CMOS multiplexers. The MAX4578 and dual 4-channel MAX4579 are ideal for precision ADC calibration and system self-monitoring 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 volt- age, accurate to 15 bits, and 1/2(V+) 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 MAX4578/MAX4579 have enable inputs and address latching. All digital inputs have 0.8V and 2.4V logic thresholds, ensuring both TTL- and CMOS-logic com- patibility when using a single +12V or dual +15V sup- plies. Protection diodes at all inputs provide >2kV ESD rating. The MAX4578/MAX4579 operate from a single +4.5V to +36V supply or from dual supplies of +4.5V to +20V. On-resistance (350Q max) is matched between switch- es to 15Q max. Each switch can handle Rail-to-Rail analog signals. The off-leakage current is 20pA at TA = +25C and 1.25nA at Ta = +85C. The MAX4578/MAX4579 are available in small 20-pin SSOP, SO, and DIP packages. Applications Data-Acquisition Systems Test Equipment Avionics Audio Signal Routing Networking Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. MAXIMA Features 4 --f-.hU OH Ooh Oh O 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 350Q (max) Ron 12Q (max) Ron Matching Between Channels 10pC (max) Charge Injection Guaranteed 20pA Off-Leakage Current Rail-to-Rail Signal Handling Small 20-Pin SSOP, SO, DIP Packages Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX4578CAP 0C to +70C 20 SSOP MAX4578CWP 0C to +70C 20 Wide SO MAX4578CPP 0C to +70C 20 Plastic DIP MAX4578EAP -40C to +85C 20 SSOP MAX4578EWP -40C to +85C 20 Wide SO MAX4578EPP -40C to +85C 20 Plastic DIP Ordering Information continued at end of data sheet. Pin Configurations/ Functional Diagrams V+ 20 GND MAXUM LATCH Vv. MAX4579 19h ay CAL REFHI AO Al REFLO COMB COMA NO1A NO4B NO2A NO3B NOBA NO2B NO4A NOIB MAX4578 appears at end of data sheet. Maxim Integrated Products 1 For free samples & the latest literature: http:/1vwww.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ABSOLUTE MAXIMUM RATINGS (Voltage Referenced to GND) -0.3V to +44V -44V to +0.3V -0.3V to +44V CAL, LATCH A_, EN, NO_, COM_, REFHI, REFLO (Note 1) wo. sce see sseeeneeeee (V- - 0.3V) to (V+ + 0.3V) Continuous Current (any terminal)....... cesses +30mA Peak Current, NO_ or COM_ (pulsed at ims, 10% duty cycle MAX)... ee eee +100mA Continuous Power Dissipation (Ta = +70C) SSOP (derate 8MW/C above +70C) wo. Wide SO (derate 8mW/C above +70C) Plastic DIP (derate 10.53mW/C above +70C) Operating Temperature Ranges MAX4578C_P/MAX4579C_ Pu... ceeccece see eeeeeeen eae 0C to +70C MAX4578E_P/MAX4579E_P oo. .cccesee cess eeeeee -40C to +85C Storage Temperature Range... ..-65C to +160C Lead Temperature (soldering, 10S@C) 0... cscs +300C 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 CHARACTERISTICSDual +15V Supplies (V+ = +15V 410%, V- = -15V 410%, logic levels = 2.4V and 0.8V, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS MIN TYP MAX | UNITS SWITCH Analog Signal Range CoM (Note 3) V- V+ Vv . Icom_ = 0.2mA, VNo_ = +10V, TA = +25C 220 350 On-Resistance ROSIN) | V4 = 13.5V, V-= -13.5V Ta= Twin to TAX a5 | On-Resistance Matching Ta = +25C 4 12 = =+ Between Channels ARON Icom_= 0.2mA, VNo_= +10V, Q (Note 4) V4 = 13.5V, Ve = -13.5V Ta = TMIN to TMAX 15 NO Off-Leakage Current | VNo_ = 14V, Vcom_ = +14V, TA = +25C -0.02 0.001 0.02 nA (Note 5) NO(OFF) | ya = 16.5V, V- = -16.5V Ta=Twinto Tmax! -1.25 1.25 Voom = 14V, MAX4578 TA = +25C -0.05 0.005 0.05 COM Off-Leakage | VNO_ = #14V, TA= TMINto TMAX| -6.5 6.5 nA Current (Note 5) COM_(OFF)) v4 = 16.5V, MAX4579 TA = +25C -0.05 0.005 0.05 V-= -16.5V Ta = TMIN to TMax| -3.25 3.25 Voom = 14V, MAX4578 TA = +25C -0.05 0.006 0.05 COM On-Leakage VNo_ = +14V, TA=TMIN to TMAX| -6.5 6.5 aA Current (Note 5) COM_(ON) | v4 = 16.5V, MAX4579 TA = +25C -0.05 0.008 0.05 V-= -16.5V TA = TMIN to TuMax| -3.25 3.25 2 MAXIMAHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICSDual 15V Supplies (continued) (V+ = +15V 410%, V- = -15V +10%, logic levels = 2.4V and 0.8V, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS LOGIC INPUTS Input High Voltage VIH 2.4 1.9 Vv Input Low Voltage VIL 1.9 0.8 Vv Input Current with Input _ _ _ _ 7 Voltage High IH VEN = VA_ = VLATCH = VCAL = V+ 1 0.001 1 pA Input Current with Input _ _ _ _ 7 Voltage Low lie VeN = Va_= VLATCH = VcaL = 0 1 0.001 1 HA SUPPLY Power-Supply Range +4.5 +20 Vv VEN = VA_= VLATCH= VCAL=0 | Ta = 425C 50 80 Positive Supply Current l+ or V+, V+ = 16.5V, V- = -16.5V pA (Note 6) TA = TMIN to TMAX 120 VEN = VA_= VLATCH= VCAL=0 | Ta= +25C 1 0.001 1 Negative Supply Current - or V+, V+ = 16.5V, V- = -16.5V HA (Note 6) TaA=TMINto TMAX| = -5 5 VEN = VA_= VLATCH= VCAL=0 | Ta = +25C 50 80 GND Supply Current IGND or V+, V+ = 16.5V, V- = -16.5V pA (Note 6) Ta = TMIN to TMAX 120 DYNAMIC CHARACTERISTICS Transition tr 5; 1 TA = +25C 320 450 ransition Time RANS igure ns 9 TA = TMIN to TMAX 600 Break-Before-Make . Interval (Note 3) tOPEN Figure 2 TA = +25C 50 180 ns . TA = +25C 260 400 Enable Turn-On Time ton Figure 3 ns TA = TMIN to TMAX 500 . TA = +25C 130 220 Enable Turn-Off Time tOFF Figure 3 ns TA = TMIN to TMAX 300 Charge Injection CL = 1nF, VNo_=0, Rs = 0, _ (Note 3) VCTE Figure 4 TA = +25C 3.5 0 pc Off-lsolation Viso VEN = 0, RL = 50, Figure 5 TA = +25C -75 dB Crosstalk Between VEN = 2.4V, f = 1MHz, > Channels (Note 8) Ver VGEN = 1Vp-p, Figure 5 TA= +25C 70 dB Logic Input Capacitance CIN f= 1MHz TA = +25C 3 pF . f = 1MHz, VEN = 0, NO Off-Capacitance CoFF Figure 6 Ta = +25C 3 pF . f = 1MHz, VEN = 0, COM Off-Capacitance |Ccom_(oFA Figure 6 TA = +25C 14 pF COM On-Capacitance |CcoM_(ON) Fgure 6. VEN = 2.4V, Ta = 425C 20 pF MA AXIAMA 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICSDual 15V Supplies (continued) (V+ = +15V 410%, V- = -15V +10%, logic levels = 2.4V and 0.8V, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS LATCH TIMING (Note 3) Ta = +25C 70 200 Setup Time ts Figure 7 ns TA = TMIN to TMAX 250 . TA = +25C -10 0 Hold Time tH Figure 7 ns TA=TMIN to TMAXx} = -10 . Ta = +25C 22 40 Enable Setup Time tES Figure 8 TacTuntoT 50 ns A= TMIN to TMAX Pulse Width, LATCH tw Fiqure 7 TA = +25C 120 72 ng Enable g Ta = TMIN to Tmax] 180 INTERNAL DIVIDERS 14.9/ 15/ 15.1/ Offset Divider O VREFHI = 10V, TAs 425C 409s 40984096 | set bivieer Output REFLO = GND 149/ 15/ 15.47 TA=TMINTOTMAX! 4ogg 4096 -~= 4096 4080.9/ 4081/ 4081.1/ VacrH = 10V TA= +25C 4096 4096 4096 Gain Divider Output . LSB P REFLO = GND 4080.9/ 4081/ 4081.1 / TA=TMINtOTMAX] 4ogg 4096 4096 2032/ 2048/ 2064/ TA= +25C 4096 4096 4096 (V+ / 2) Divider Output Referenced to GND LSB 2032/ 2048/ 2064/ TA=TMINTOTMAX! 4ogg 4096 ~=4096 > 2544/ 2560/ 2576/ TA= +25C 4096 4096 4096 (V+ - V-) Divider Output Referenced to V- LSB 2544/ 2560/ 2576/ TA=TMINTOTMAX! 4ogg 4096 ~=4096 Output Resistance Offset (Note 3) Ta = +25C 400 800 Q Divider Output Resistance Gain (Note 3) Ta = +25C 400 800 Q Divider Output Resistance 5 (V4. / 2) Divider (Note 3) Ta = +25C 6 9 kQ Output Resistance 6 (V4. - V-) Divider (Note 3) Ta = +25C 6 9 kQ Output Resistance (Note 3) Ta = +25C 400 800 | @ (REFHI, REFLO, GND) A= Additional Positive Supply (V+ / 2) divider active, _ V+ / V+ / Current (Note 3) ViH = V+, ViL=0 TA= +25C 24k 13k | MA 4 MAXIMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICSDual 15V Supplies (continued) (V+ = +15V 410%, V- = -15V 410%, logic levels = 2.4V and 0.8V, Ta = TmIN to Tmax, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) (REFHI, REFLO) (Note 3) gain divider active PARAMETER SYMBOL CONDITIONS MIN TYP MAX | UNITS Additional Positive Supply (V+ - V-) divider active, _ (V+-V-)/ (V+-V-)/ Current (Note 3) Vin = V+, ViL=0 TA= +25C 24k 13k mA Additional Negative (V+ - V-) divider active, _ (V+-V-)/ (V+-V-)/ Supply Current (Note 3) Vin = V+, ViL=0 TA= +25C 24k 13k mA REFHI, REFLO Input V- V+ Vv Range (Note 3) - 0.3 + 0.3 Input Resistance Offset divider active, Ta = 425C 17 30 kQ ELECTRICAL CHARACTERISTICSDual +5V Supplies (V+ = +5V 410%, V- = -5V +10%, logic levels = 2.4V and 0.8V, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS MIN TYP MAX | UNITS SWITCH . VNO Analog Signal R Note 3 V- V. Vv nalog Signal Range VcoM (Note 3) + : Icom_ = 0.2mA, VNo_ = +8V, Ta = +25C 660 900 On-Resistance ROSIN) | v4 = 4.5V, V- = -4.5V TA = Twin to TMAX 1100 | On-Resistance Matching Between Channels ARDS(ON) OMe A, wn = 3.0V, TA = +25C 10 Q (Note 4) oes NO Off-Leakage Current INO(OF VNo_ = 4.5V, Vcom_ = +4.5V, TA = +25C -0.02 0.001 0.02 nA (Note 5) (OFF) | va = 5.5V, V- = -5.5V Ta = TMINto TMAX| -1.25 1.25 Voom. = 4.5V, maxas7a [A= +25C 0.05 0.005 0.05 COM Off-Leakage | 1V; VNo_ = +4.5V, TA= TMINto TMAX| -6.5 6.5 nA Current (Note 5) COM_(OFF)| yy _ 5 5v, MAX4579 Ta = +25C 0.5 0.005 0.5 V- = -5.5V TA = TMIN to TMAX -6.5 6.5 Voom. = 4.5V, maxasya LAs +25C 0.05 0.008 0.05 COM On-Leakage VNO_ = 4.5V or TA=TMINto TMAX| -6.5 6.5 nA Current (Note 5) COM_{ON) floating, V+ = 5.5V, MAX4579 Ta = +25C -0.05 0.05 V- = -5.5V TA = TMIN to TMAX|] -3.25 3.25 MAXIMA 5 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICSDual 5V Supplies (continued) (V+ = +5V 410%, V- = -5V +10%, logic levels = 2.4V and 0.5V, Ta = TmMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS LOGIC INPUTS (Note 3) Input High Voltage VIH 2.4 1.4 Vv Input Low Voltage VIL 1.4 0.5 Vv Input Current with Input Voltage High IIH VEN = VA_= VLATCH = VCAL = V+ 1.0 0,001 1.0 yA Input Current with Input Voltage Low HL VEN = VA_= VLATCH = VcAL = 0 1.0 0.001 1.0 HA DYNAMIC CHARACTERISTICS (Note 3) = = TA = +25C 1.0 1.8 Transition Time tTRANS VNo1 SV, VNos = 0, Act Us Figure 1 Ta = TMIN to TMAX 2.2 Break-Before-Make . Interval toPEN | Figure 2 TA = +25C 200 440 ns Enable Turn-On Ti t V BV. Fi 3 TA = +25C 0.675 1.2 nable Turn-On Time = 3V, Figure s ON Not 9 TA = TMIN to TMAX 1.5 i. . TA = +25C 0.5 1.0 Enable Turn-Off Time tOFF VNo1 = 3V, Figure 3 ys TA = TMIN to TMAX 1.3 ELECTRICAL CHARACTERISTICSSingle +12V Supply (V+ = +12V, V- = 0, logic levels = 2.4V and 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS SWITCH Analog Signal Range vee (Note 3) 0 V+ Vv On-Resist Ri | 0.2mA, Vi av, ov A= t28C 470750 Q n-nesistance = U.cMA, = 2 DS(ON) | ICOM_ NO_ Ta = Twn to Tax 850 On-Resistance Matching Between Channels AR(ON) | ICOM_= 0.2mA, VNo_= 3V,10V | TA= +25C 8 Q (Note 4) NO Off-Leakage Current INO(OE Vcom_ = 1V, 11V; TA = +25C -0.02 0.001 0.02 aA (Notes 5, 9) (OFF) | WNo = 11V, 1V TA= TMINtoTMax| 1.25 1.25 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers ELECTRICAL CHARACTERISTICSSingle +12V Supply (continued) (V+ = +12V, V- = 0, logic levels = 2.4V and 0.8V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS SWITCH (continued) TA = +25C -0.05 0.005 0.05 MAX4578 COM Off-Leakage Vcom_ = 11V, 1V; TA=TMINtOTMAX| -6.5 6.5 aA Current (Notes 5, 9) COM(OFF)) Ving = 1V, 11V Ta = +25C 0.05 0.005 0.05 ~ MAX4579 TA = TMIN to TMAX] = -3.25 3.25 MAX4578 TA = +25C -0.05 0.006 0.05 COM On-Leakage Voom_= 11, 1V; TA=TMIN to TMAx] -6.5 6.5 Current (Notes 5, 9) ICOM_(ON) | VNO_= T1V, TY, Ta = 425C -0.05 0.05 na , or floating MAX4579 A=+ : : TA = TMIN to TMAX| -3.25 3.25 LOGIC INPUTS Input High Voltage VIH 2.4 1.8 Vv Input Low Voltage VIL 1.8 0.8 Vv Input Current with Input Voltage High iH | VeN = VA_= VLATCH = VoaL = V+ 4+ 0001 1 | pA Input Current with Input Voltage Low He VEN = VA_ = VLATCH = VCAL = 0 -1 0.001 1 pA DYNAMIC CHARACTERISTICS (Note 3) Transition Ti t V BV. V 0.5 1 TA = +25C 600 850 ransition Time = 8V, = 0, Figure ns TRANS NO1 NO8 9 Ta = TMIn to TMAX 1100 Break-Before-Make . Interval tOPEN | Figure 2 TA = +25C 120 400 ns . TA = +25C 540 800 Enable Turn-On Time ton Figure 3 ns TA = TMIN to TMAX 1100 . TA = +25C 150 315 Enable Turn-Off Time tOFF Figure 3 ns TA = TMIN to TMAX 450 Note Note Note Note Note Note Note Note : The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. : Guaranteed by design. : ARON = RON(MAX) - RON(MIN)- : Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at TA = +25C. : If the logic inputs can float during power-on, connect a 1MQ pull-up from LATCH to V+. See Applications Information section. : Off-lsolation = 20log10 (VcomM/ VNO), VCOM = output, VNo = input to off switch. : Between any two switches. : Leakage parameters testing at single supply are guaranteed by correlation with dual supplies. MA AXIAMA 7 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers (TA= +25C, unless otherwise noted.) 70 650 550 gS & 450 350 250 150 2100 1900 1700 1500 & 1300 +100 900 700 500 300 1000 100 LEAKAGE CURRENT (nA) S = = o S 2 0.001 0.0001 0 25 55 -35 ON-RESISTANCE vs. Voom (DUAL SUPPLIES) MAX4578/79 toc 04 Voom (V) ON- RESISTANCE vs. Vcom (SINGLE SUPPLY) MAX4578/79 toc 04 5.0 75 10 Voom (V) 12.5 LEAKAGE CURRENT vs. TEMPERATURE V+ =+15V V- =-15V MAX4578/79 toc 07 Icom (OFF) INO (OFF) o 15 5 25 45 65 85 105 125 TEMPERATURE (C) 400 350 300 _ 250 a 5 200 150 100 50 2000 1800 1600 1400 = 1200 q 1000 lt, F (A) 800 600 400 200 100u ON- RESISTANCE vs. Vcom AND TEMPERATURE (+15V DUAL SUPPLIES) 800 V+=+15V V- =-15V 700 600 _ 500 gq 5 400 300 200 100 Vcow (V) ON- RESISTANCE vs. Vcowm AND TEMPERATURE (5V SINGLE SUPPLY) 700 Ta=+85C 600 Ta =+70C AN Ta = 425C 500 Ta=-40C g 4 AS: & 300 200 100 V+ =+5V 0 0 0 05 1015 20 25 30 35 40 45 50 Vcow (V) SUPPLY CURRENT vs. TEMPERATURE EEEaL_=_=_===_===_=_====Be I t t t t t t {2 3 g z TEMPERATURE (C) 5 6 7 8 9 V+, V- (V) Typical Operating Characteristics ON- RESISTANCE vs. Vcom AND TEMPERATURE (+5V DUAL SUPPLIES) V+=45V Ve =-5V Ta=+85C MAX4578/79 toc 03 Ta = 425C Ta=-40C Voom (V) ON- RESISTANCE vs. Vcom AND TEMPERATURE (12V SINGLE SUPPLY) MAX4578/79 toc 08 TA = +85C Ta=+/70C Ta = 425C Ta=-40C Voom (V) TURN-ON/TURN-OFF TIME vs. SUPPLY MAX4578/79 TOC 0g 10 11 12 13 14 15 MAXUM(Ta = +25C, unless otherwise noted.) TURN- ON/TURN- OFF TIME vs. TEMPERATURE (+15V) V4 =-+15V Ve =-4 MAX4578/79 toc 10 40-20 0 20 40 60 80 100 TEMPERATURE (C) CHARGE INJECTION vs. Vcom MAX4578/79 toc 13 Voom (V) GAIN DIVIDER OUTPUT vs. VREFHI 4081.10 4081.080 } YRELO=0 4081.060 & 481,040 4081.020 4081.00 4080.980 OUTPUT RATIO (LSB 4080.960 4080.940 4080.920 4080.900 123 4 567 8 9 1011 12 131415 VrerHt (V) MA AXIAMA ton, torr (ns) 15.100 15.080 15.060 15.040 15.020 15.000 14.980 OUTPUT RATIO (LSB) 14.960 14.940 14.920 14.900 4081.100 4081 .080 4081 .060 4081.040 4081 .020 4081 .000 4080.980 $B) OUTPUT RATIO (L' 4080.960 4080.940 4080.920 4080.900 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers TURN- ON/TURN- OFF TIME vs. TEMPERATURE (+5 V+=+46V V- =-5V 40 -20 0 2 40 #660 TEMPERATURE (C) OFFSET DIVIDER OUTPUT vs. VREFHI VpEFLO =0 12 34 567 8 9 1011 12 VpEFHI (V) GAIN DIVIDER OUTPUT vs. TEMPERATURE VperH! = 10V VREFLO = 0 V+=+15V y- =-15V TEMPERATURE (C) V) MAX4578/79 toc 11 80 100 s 3 = 131415 s 3 = 40 --20 0 20 60 80 100 OUTPUT RATIO (LSB) OUTPUT RATIO (LSB) 800 700 600 500 400 ton, torr (ns) 300 200 100 15.100 15.080 15.060 15.040 15.020 15.000 14.980 14.960 14.940 14.920 14.900 2060.00 2058.00 2056.00 2054.00 2052.00 2050.00 2048.00 2046.00 2044.00 2042.00 2040.00 Typical Operating Characteristics (continued) TURN: ON/TURN- OFF TIME vs. TEMPERATURE (12V) Ve=-12V V- =0 -40 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) OFFSET DIVIDER OUTPUT vs. TEMPERATURE VeEFHI = 10V VREFLO = 0 V+ =4+15V V- =-15V 6 -20 0 20 MAX4578/79 toc 15 60 80 100 TEMPERATURE (C) (V+ / 2) DIVIDER OUTPUT vs. SUPPLY VOLTAGE 7 8 9 10 11 V+, Ve (VY) 12.13 14 15 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Typical Operating Characteristics (continued) (Ta = +25C, unless otherwise noted.) (V+ / 2) DIVIDER OUTPUT (V+ - V-) DIVIDER OUTPUT (V+ - V-) DIVIDER OUTPUT vs. TEMPERATURE vs. SUPPLY VOLTAGE vs. TEMPERATURE 2055 2 2570 8 2570 x aa : g 2568 z 2053 2 2565 : 2566 3 @& 2052 = NO B ose S 2051 2560 seep 2050 Lt 5 5 od 5 2560 E 2049 E2565 E 3 ooag 3 ZB 2558 2047 2550 2556 2046 2554 2045 2545 2552 40-20 0 2 60 8 100 5 6 7 8 9 10 11 12 13 14 15 4 -20 0 2 @ 8 100 TEMPERATURE (C) Va, Ve (W) TEMPERATURE (C) Rout vs. TEMPERATURE Rout vs. TEMPERATURE (OFFSET DIVIDER AND GAIN DIVIDER) (V+ / 2 DIVIDER AND V+ - V- DIVIDER) FREQUENCY RESPONSE 500 . s 6100 0dB MAX4578/79 toc 24 Vi = H15V 8 Vi = H15V 8 INSERTION LOSS V- =-15V 1: 5900 fF vy. =-15V 8 450 77 2 5700 2 40 /div | __ 5500 12) DIVIDER @ 400 GAIN DIVIDER @ ) ON-PHASE 5 5 5300 1006 & V4 4 & div 350 77 7 5100 A || OFFSET DIVIDER (V+- V-) DIVIDER A 4900 300 i | 4700 OFF-ISOLATION 250 4500 0-20 0 20 40 80 80 100 40-20 0 2 40 6 8 100 100k 1M 10M 100M TEMPERATURE (C) TEMPERATURE (C) FREQUENCY (Hz) 10 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Pin Descriptions MAX4578 (Single 8-to-1 Cal-Mux) MAX4579 (Dual 4-to-1 Cal-Mux) PIN NAME FUNCTION PIN NAME FUNCTION 1 V+ Positive Supply Voltage 1 V+ Positive Supply Voltage 2 GND Ground 2 GND Ground 3 V- Negative Supply Voltage 3 V- 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 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 NOS 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 Al Address Bit 1 16 Al Address Bit 1 17 AO Address Bit 0 17 AO Address Bit 0 18 CAL Calibration Control Input 18 CAL Calibration Control Input 19 EN Multiplexer Enable 19 EN Multiplexer Enable 20 LATCH Address Latch Control Input 20 LATCH Address Latch Control Input MA AXIAMA 11 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Truth Tables MAX4578 (Single 8-to-1 Cal-Mux) CAL A2 Al AO EN LATCH COM x x x x 0 x All switches and dividers open. COM is high-Z. Latch contents set to all is. X X X X 1 1 State is latched when LATCH is high. ) ) ) ) 1 ) NO1 ) ) ) 1 1 ) NO2 ) ) 1 ) 1 ) NOS ) ) 1 1 1 ) NO4 ) 1 ) ) 1 ) NOS ) 1 ) 1 1 ) NO6 ) 1 1 ) 1 ) NO7 ) 1 1 1 1 ) NOs 1 ) 0 0 1 0 (V+ / 2) Divider, Vcom = 2048 / 4096 (V+) 1 ) ) 1 1 ) REFHI 1 ) 1 ) 1 ) REFLO 1 0 1 1 1 0 (V+ - V-) Divider, Vcom= 2560 / 4096 (V+ - V-) 1 1 ) ) 1 ) 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 = Dont Care MAX4579 (Dual 4-to-1 Cal-Mux) CAL Al AO EN LATCH COMA COMB x x x 0 x All switches and dividers open. All switches and dividers open. COMA is high-Z. COMB is high-Z. X X X 1 1 State is latched State is latched ) ) ) 1 ) NO1A NO1B ) ) 1 1 ) NO2A NO2B ) 1 ) 1 ) NOSA NO3B ) 1 1 1 ) NO4A NO4B 1 ) ) 1 ) 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. All switches and dividers open. COMA is high-Z. COMB is high-Z. X = Dont Care 12 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Detailed Description The MAX4578/MAX4579 are multiplexers with addition- al calibration features. Internal resistor-dividers gener- ate accurate voltage ratios from an external voltage reference, allowing zero and full-scale calibration of ADC systems, as well as facilitation of system self-mon- itoring. 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 MAX4578/ MAX4579 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 MAX4578 has an internal divide-by-two resistor string between V+ and GND that is accurate to 8 bits. It also has a 5/8 resistor string between V+ and V- that is accurate to 8 bits. This divider string allows measurement of the nega- tive supply with a unipolar ADC. GND can also be switched to the output, eliminating the need for an addi- tional multiplexer channel. Applications Information The MAX4578/MAX4579s 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 nor- mal 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 sig- nal pin are identical, and therefore fairly well balanced, MA AXIAMA they are reverse-biased differently. Each is 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 analog signal-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 cur- rents 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 logic- level translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switch- es. 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 thresh- olds, 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 greater than +4.5V. Bipolar-Supply Operation The MAX4578/MAX4579 operate with bipolar supplies between +4.5V and +20V. The V+ and V- supplies need not be symmetrical, but their sum cannot exceed the absolute maximum rating of 44V. Note: Do not connect the MAX4578/MAX4579 V+ pin to +3V AND connect 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. Single-Supply Operation The MAX4578/MAX4579 operate from a single supply between +4.5V and +36V when V- is connected to GND. All of the bipolar precautions must be observed (see Bipolar Supply Operation section). However these parts are optimized for +15V operation, and most AC and DC characteristics are degraded significantly when depart- ing from +15V. As the overall supply voltage (V+ to V-) is lowered, switching speed, on-resistance, off-isolation, and distortion will degrade, and supply current will decrease (see the Typical Operating Characteristics section). 13 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers 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. 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 the internal dividers connected between the supplies may immediately turn on, causing higher supply current (1.4mA) when the enable input is toggled. Avoid this condition by ensuring that EN 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 MAX4578/MAX4579 is off (i.e., V+ = V- = 0), the Absolute Maximum Ratings still apply. This means that neither logic-level inputs on NO_ nor sig- nals on COM_ can exceed +0.3V. Voltages beyond +0.3V cause the internal ESD-protection diodes to con- duct, and the parts can be damaged if excessive cur- rent flows. Test Circuits/Timing Diagrams +15V | V+ Ve EN NOt a5V LATCH C NO2-NO7 -_- = MAXLAM = AQ. = MAX4578 Nop - -5v A COM Voou Ae ND \- sof Tr tL _L -15V 1 Lt +15V | V+ V4 EN NO1B 45V ft LATCH NO2B-NOBB CAL NOIA-NOPAT sd MAXUM = AQ MAX4579 NO4BJ- -5v A COMB Voom GND V- LOGIC -15V INPUT Ve ov Vnot, VNotB SWITCH OUTPUT Veom av Vnos, VNo4B tTRANS tTRANS Figure 1. Transition Time 14 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Test Circuits/Timing Diagrams (continued) +15V | V+ tr< 20ns V. a Logic +#V tr <20ns Ema LATCH INPUT 50% NO1-NO8 45V CAL VA ov _ MAXIAA AQ = MAX4578 0.8VNo Ya A 90% wD COM Voom SWITCH GND V- OUTPUT 50m ik 10pF Veo | OV ~_} fopaN z= =z = -15V = = +15V | V+ EN t tra< 20ns Logic *V 50% tF<20ns Ct LATCH NO1A-NO4B INPUT =" CAL NOt B-NO4B 45V Va ov _ MAXIMA AN MAX4579 Va 0.8VNo_ At COMA Voom SWITCH 500 GND V- QUTPUT | 1k 10pF Veo ov z= Tt = 15V = = Figure 2. Break-Before-Make Interval +15V l Vv V+ AG ey NOt 45V LATCH NC2-NO8 F# CAL = tR<20ns +5V tp<20ns MAXIM VEN + 50% LL so AO MAX4578 ov At COM Voom 50Q A2 GND V- | 1k L 10pF 0.8(Viot, Vno1B) V = = = = 45y -15V = = com " 90% 90% Ven ey Vt Note 45V LATCH NO2B-NO4B CAL NO1A-NO4A Lt ov 19 MAXIM = toy > > torr MAX4579 " cows Pg i. ve 50Q GND V- 10pF TT) SL -15V = = Figure 3. Enable Switching Time MA AXIAMA 15 6BZLZGVXVW/8LZSVXVWNHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Test Circuits/Timing Diagrams (continued) : T Cy = 100pF T CHANNEL - SELECT1_] ay @>) N LO St +15V < Rg | NO_ V4 <= EN Ss MAXIM = Vg = CHANNEL (49 MAX4578 CO ser | AI r N = CAL LE LATCH = GND V- y a x< ~ = -15V = +15V Rg | cr NO. VA EN MAXUM MAX4579 A COM yt C, = 100pF CAL LATCH = GND -15V I LOGIC ev INPUT ON OFF ON h AVourt Vv y COM P AVourt IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q=AVour CL Loaic INPUT ON OFF ON Ven ov f N\4 AVouT Voom AVourt IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q=AVout CL Figure 4. Charge Injection 16 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Test Circuits/Timing Diagrams (continued) NI, L +15V 10nF EN MAXLM MAX4578 MAX4579 COM_ LATCH CAL V- GND + NETWORK ANALYZER 502 502 Tse > | MEAS y 2 REF 10nF L 50Q 502 LWW IH = T OFF-ISOLATION = 20log a CROSSTALK = 20log our -15V NOTES: MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS. ~ OFF- ISOLATION IS MEASURED BETWEEN COM AND OFP TERMINAL ON EACH SWITCH. ON LOSS IS MEASURED BETWEEN COM AND ON TERMINAL ON EACH SWITCH. Figure 5. Off-lsolation/Crosstalk +15V +15V | | V4 V+ {2 NOt o NO1A -o CHANNEL MAXIM ' {MHz MAXIM : {MHz \ ANALYZER SELECT \ ANALYZER 0 cto = A0 covAL-o = f = 1MHz f= 1MHz CAL, LATCH, CAL, LATCH, GND EN Vv GND EN V- -15V -15V Figure 6. NO_/COM_ Capacitance MA AXIAMA 17 6BZLZGVXVW/8LZSVXVWNMAX4578/MAX4579 High-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Test Circuits/Timing Diagrams (continued) +15V +15V NV. * LATCH NM LATCH V1 Nee Vv 1 Ne AMAAXLAA MAXIAN MAX4578 MAX4578 NOt, NOB-NOB AO NOt, NOB-NOB AO At A he 2 CAL mo ev. OM cp ly, OM -15V -15V tMpw) LATCH LATCH 50% / 50% ts loa tH ADDRESS (A _) Te Vij K NOTE: TIMING MEASUREMENT REFERENCE LeveL is He 5 Mi Figure 7. Setup Time, Hold Time, Latch Pulse Width Figure 8. Enable Setup Time 18 MAXUMHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers Pin Configurations/ _Functional Diagrams (continued) MAXLAN V4 MAX4578 LATCH EN CAL AO Al A2 GND Ve PEFHI 4081Ri oo &ee a 4081Ri REFLO COM NOt NO8 Noe NO? NOB NC6 NO4 NOS MAXIM 19 6BZLZGVXVW/8LZSVXVWNHigh-Voltage, Single 8-to-1/ Dual 4-to-1 Cal-Multiplexers __ Ordering Information (continued) Chip Information TRANSISTOR COUNT: 520 MAX4578/MAX4579 PART TEMP.RANGE __ PIN-PACKAGE MAX4579CAP 0C to +70C 20 SSOP MAX4579CWP 0C to +70C 20 SO Wide MAX4579CPP 0C to +70C 20 Plastic DIP MAX4579EAP _--40C to +85C 20 SSOP MAX4579EWP _-40C to +85C 20 SO Wide MAX4579EPP _--40C to +85C 20 Plastic DIP Package Information 5 res Sees INCHES __|MILLIMETERS a r a 068 3078 173 199 MIN {| MAX {MIN | MAX Hl TL Al 0.002 0.008 0.05 021 D{ 0.239 |0.249 | 6.07 | 6.33 | 14L & too loos laze tose] (bl o239 lozss [607 | 633 | 16L Dlo.278/0.289 | 7.07| 7.33] 20. + C | 0.004 [0.008 [0.09 [020 | \T1 9 317 |o.328| 8.07| 8.33/24. 2 SEE _VARTATIONS pl 0.39710.407 |10.07110.33| 28 | e 4 LE [oes [o.209 [5.20 | 5.38 : : L e [0.0256 BSC [0.65 BSC H |o301 [osu | 7.65 | 7.90 L [0.025 0.037 | 063 | 0.95 a | o |e o | 8 a =o c Crh 7 TF. ny | L a Al NOTES: y 1, D&E DO NOT INCLUDE MOLD FLASH. SVIA Al/VI 2, MOLD FLASH OR PROTRUSIONS NOT TO rane EXCEED .15mm .006%> PACKAGE OUTLINE, SSOP, 5,3X,65mm APPROVAL DOCUMENT CONTROL NOL REV 3. CONTROLLING DIMENSION: MILLIMETER nt opee i a 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 1998 Maxim Integrated Products Printed USA MAXIMA is a registered trademark of Maxim Integrated Products.