19-3926; Rev 0; 3/91 Quad, SPST Analog Switches The DG308A/DG309 are quad, single-pole-single-throw (SPST) analog switches. The DG308A is normally open (SPST, NO), while the DG309 is normally closed (SPST, NC). Both parts feature fast switching speeds and low onresistance over the analog range. Other features include a turn-on time under 120ns, a turn-off time under 90ns, and a channel on-resistance of 60. CMOS inputs provide reduced input loading and very low leakage currents. Both parts feature a 44V maximum breakdown voltage rating that allows 30V peak-to-peak switch-off blocking capacity. The DG308A/DG309 can be used with split supplies (5V to 20V) or a single positive supply (+5V to +30V), while retaining CMOS-logic-compatible inputs. ________________________Applications Sample-and-Hold Circuits Test Equipment Communications Systems PBX, PABX Guidance and Control Systems Heads-Up Displays Military Radios ____________________________Features 60 rDS(ON) Single/Bipolar-Supply Operation CMOS Logic Compatible Monolithic, Low-Power CMOS Design ______________Ordering Information PART DG308ACY DG308ACK DG308AC/D DG308ADJ 0C to +70C 0C to +70C 0C to +70C -40C to +85C 16 Narrow SO 16 CERDIP Dice* 16 Plastic DIP DG308ADY DG308ADK DG308AAK DG309CJ -40C to +85C -40C to +85C -55C to +125C 0C to +70C 16 Narrow SO 16 CERDIP 16 CERDIP** 16 Plastic DIP DG309CY DG309CK DG309C/D DG309DJ 0C to +70C 0C to +70C 0C to +70C -40C to +85C 16 Narrow SO 16 CERDIP Dice* 16 Plastic DIP DG309DY DG309DK DG309AK -40C to +85C -40C to +85C -55C to +125C 16 Narrow SO 16 CERDIP 16 CERDIP** ______Pin Configuration/Truth Table TOP VIEW 5k * 1 16 * 2 3 -15V 4 10k VOUT 13 +15V 12 6 11 7 10 IN1 1 16 IN2 D1 2 15 D2 14 S2 V- 4 13 V+ (SUBSTRATE) GND 5 12 N.C. S4 6 11 S3 D4 7 10 D3 IN4 8 9 IN3 S1 3 14 5 * 8 40k 5k 15 DG308A DG309 PIN-PACKAGE 16 Plastic DIP * Contact factory for dice specifications. ** Contact factory for availability and processing to MIL-STD-883. __________Typical Operating Circuit VIN 10V TEMP. RANGE 0C to +70C DG308ACJ 20k 9 * PROGRAMMABLE-GAIN AMPLIFIER DG308A DG309 DIP/SO LOGIC 0 1 TRUTH TABLE DG308A OFF ON DG309 ON OFF * PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 DG308A/DG309 _______________General Description DG308A/DG309 Quad, SPST Analog Switches ABSOLUTE MAXIMUM RATINGS Voltage Referenced to VV+ ....................................................................................+44V GND .................................................................................+25V Digital Inputs VS, VD................(V- - 2V) to (V+ + 2V) or 20mA, whichever occurs first Current into Any Terminal (except S or D) ..........................30mA Continuous Current (S or D)................................................20mA Peak Current (S or D) (pulsed at 1ms, 10% duty cycle max) ............................70mA Continuous Power Dissipation (TA = +70C) (Note 1) Plastic DIP (derate 10.53mW/C above +70C)............842mW Narrow SO (derate 8.70mW/C above +70C) .............696mW CERDIP (derate 10.00mW/C above +70C) ................800mW Operating Temperature Ranges DG308AC_/DG309C_ .........................................0C to +70C DG308AD_/DG309D_ ......................................-40C to +85C DG308AAK/DG309AK ...................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C 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 (V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS DG30_AK MIN TYP MAX DG30_C/D MIN TYP MAX -15 -15 UNITS SWITCH Analog Signal Range VANALOG Drain-Source On-Resistance Source-Off Leakage Current Drain-Off Leakage Current Drain-On Leakage Current rDS(ON) IS(OFF) ID(OFF) ID(ON) TA = +25C 15 15 VIN = 11V (DG308A), VIN = 3.5V (DG309), IS = 1mA, VD = 10V or -10V TA = +25C, TMIN 60 100 60 100 TA = TMAX 95 150 80 125 VIN = 3.5V (DG308A), VIN = 11V (DG309), VS = 14V, VD = -14V TA = +25C -1 TA = TMAX -100 VIN = 3.5V (DG308A), VIN = 11V (DG309), VS = -14V, VD = 14V TA = +25C -1 TA = TMAX -100 VIN = 3.5V (DG308A), VIN = 11V (DG309), VS = 14V, VD = -14V TA = +25C -1 TA = TMAX -100 VIN = 3.5V (DG308A), VIN = 11V (DG309), VS = -14V, VD = 14V TA = +25C -1 TA = TMAX -100 VIN =11V (DG308A), VIN = 3.5V (DG309), VS = VD = +14V TA = +25C -2 TA = TMAX -200 VIN = 11V (DG308A), VIN = 3.5V (DG309), VS = VD = -14V TA = +25C -2 TA = TMAX -200 V 0.1 1 -5 100 -100 1 -5 100 -100 1 -5 100 -100 1 -5 100 -100 2 -5 200 -200 2 -5 200 -200 0.1 5 100 nA -0.1 0.1 0.1 5 100 0.1 5 100 nA 0.1 0.1 0.1 5 100 0.1 5 200 nA 0.1 0.1 5 200 INPUT Input Current with Input Voltage High IINH VIN = 15V TA = +25C, TMAX -1 0.001 1 -1 0.001 1 A Input Current with Input Voltage Low IINL VIN = 0V TA = +25C, TMAX -1 -0.001 1 -1 0.001 1 A 2 _______________________________________________________________________________________ Quad, SPST Analog Switches (V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS DG30_AK MIN TYP MAX DG30_C/D MIN TYP MAX -10 -100 0.001 UNITS SUPPLY TA = +25C 0.001 Positive Supply Current I+ All channels on or off, VIN = 0V or 15V TA = TMAX Negative Supply Current I- All channels on or off, VIN = 0V or 15V TA = +25C -10 -0.001 TA = TMAX -100 10 100 100 100 10 -100 -0.001 100 A A -100 DYNAMIC Turn-On Time tON Figure 1 130 200 130 200 Turn-Off Time tOFF Figure 1 90 150 90 150 CL = 0.01F, VGEN = 0V, RGEN = 0 -10 -10 pC Charge Injection Q ns ns Off Isolation (Note 3) OIRR VIN = 0V (DG308A), VIN = 15V (DG309), ZL = 75, VS = 2Vp-p, f = 500kHz 78 78 dB Source-Off Capacitance CS(OFF) VIN = 0V (DG308A), VIN = 15V (DG309), f = 140kHz, VS = 0V 11 11 pF Drain-Off Capacitance CD(OFF) VIN = 0V (DG308A), VIN = 15V (DG309), f = 140kHz, VS = 0V 8 8 pF Channel-On Capacitance CD(ON) + VIN = 0V (DG308A), VIN = 15V (DG309), CS(ON) VD = VS = 0V 27 27 pF Note 1: All leads are soldered or welded to the PC board. 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: Off isolation = 20log10 VD/VS, VD = output, VS = input to off switch. +15V V+ LOGIC INPUT IN1 SWITCH INPUT VS = +3V 50% tr < 20ns tf < 20ns OV SWITCH INPUT VS tOFF 0.9VO SWITCH OUTPUT VO 0V tON 0.9VO S1 D1 IN1 RL 1k SWITCH OUTPUT VO CL 35pF LOGIC INPUT GND 0V V-15V (REPEAT TEST FOR S2, S3, AND S4) RL VO = VS RL + r DS(ON) Figure 1. Switching-Time Test Circuit _______________________________________________________________________________________ 3 DG308A/DG309 ELECTRICAL CHARACTERISTICS (continued) __________________________________________Typical Operating Characteristics (TA = +25C, unless otherwise noted.) TA = +25C V- = GND V+ = 5V 300 V+ = 10V 200 TA = +25C 200 rDS(ON) () 400 rDS(ON) () 250 DG308A309 TOC01 500 V+ = 5V DG308A309 TOC04 DRAIN-SOURCE ON-RESISTANCE vs. DRAIN VOLTAGE & POWER SUPPLIES DRAIN-SOURCE ON-RESISTANCE vs. DRAIN VOLTAGE & POWER SUPPLIES 150 V+ = 10V 100 V+ = 15V 50 100 V+ = 12V V+ = 20V V+ = 15V 0 0 15 10 -10 0 -5 5 10 VD (V) VD (V) POWER-SUPPLY CURRENT AND VOLTAGE vs. TEMPERATURE LEAKAGE CURRENTS vs. ANALOG VOLTAGE TA = +25C V- = GND 700 -15 20 V+ = 44V 600 400 V+ = 30V 15 TA = +25C VCC = 15V 10 IS, ID (pA) 500 300 20 DG308A309 TOC02 800 5 DG308A309 TOC03 0 ISUPPLY (nA) DG308A/DG309 Quad, SPST Analog Switches IS(OFF) 0 ID(OFF) -10 ID(ON) V+ = 10V 200 -20 V+ = 5V 100 -30 0 -50 -25 0 25 50 75 100 125 TEMPERATURE (C) _____________________Pin Description PIN NAME 1, 8, 9, 16 IN1-IN4 Logic Control Inputs 2, 7, 10, 15 D1-D4 Drain Output 3, 6, 11, 14 S1-S4 Source Input 4 V- 5 GND 12 N.C. 13 V+ FUNCTION Negative Supply Voltage Input Ground No Connect. Not internally connected. Positive Supply Voltage Input. Connected to substrate. -12 -6 0 6 12 VANALOG (V) __________Applications Information The DG308A/DG309 switch positive analog signals while using a single positive supply, allowing use in applications where only one supply is available. The disadvantages of using a single supply are slower switching speed and increased r DS(ON) . The Power-Supply Current and Voltage vs. Temperature graph shows the typical curve for a single-supply design. As stated in the Absolute Maximum Ratings, the analog voltage should not go above or below the supply voltages, which are V+ and 0V in single-supply operation. 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. 4 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1991 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.