DG441B/442B Vishay Siliconix New Product Improved Quad SPST CMOS Analog Switches FEATURES D D D D D D BENEFITS Low On-Resistance: 45 Low Power Consumption: 1.0 mW Fast Switching Action—tON: 120 ns Low Charge Injection—Q: −1 pC TTL/CMOS-Compatible Logic Single Supply Capability D D D D D APPLICATIONS Less Signal Errors and Distortion Reduced Power Supply Requirements Faster Throughput Reduced Pedestal Errors Simple Interfacing D D D D D D Audio Switching Data Acquisition Sample-and-Hold Circuits Communication Systems Automatic Test Equipment Medical Instruments DESCRIPTION The DG441B/442B are monolithic quad analog switches designed to provide high speed, low error switching of analog and audio signals. The DG441B/442B are upgrades to the original DG441/442. Combing low on-resistance (45 , typ.) with high speed (tON 120 ns, typ.), the DG441B/442B are ideally suited for Data Acquisition, Communication Systems, Automatic Test Equipment, or Medical Instrumentation. Charge injection has been minimized on the drain for use in sample-and-hold circuits. The DG441B/442B are built using Vishay Siliconix’s high-voltage silicon-gate process. An epitaxial layer prevents latchup. When on, each switch conducts equally well in both directions and blocks input voltages to the supply levels when off. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG441B Dual-In-Line and SOIC IN1 1 16 IN2 D1 2 15 D2 S1 3 14 S2 V− 4 13 V+ Logic DG441B DG442B GND 5 12 NC 0 ON OFF S4 6 11 S3 1 OFF ON D4 7 10 D3 IN4 8 9 IN3 TRUTH TABLE Logic “0” v 0.8 V Logic “1” w 2.4 V Top View ORDERING INFORMATION DG441B QFN16 (4x4 mm) Temp Range D1 IN1 IN2 D2 16 15 14 16 Pin Plastic DIP 16-Pin 13 S1 1 12 S2 V− 2 11 V+ GND 3 10 NC S4 4 9 S3 5 6 7 Package −40 40 to 85_C 16 Pin Narrow SOIC 16-Pin 16 Pin QFN 4x4 mm 16-Pin Part Number DG441BDJ DG442BDJ DG441BDY DG442BDY DG441BDN DG442BDN 8 D4 IN4 IN3 D3 Top View Document Number: 72625 S-32553—Rev. A, 15-Dec-03 www.vishay.com 1 DG441B/442B Vishay Siliconix New Product ABSOLUTE MAXIMUM RATINGS V+ to V− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V GND to V− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V Digital Inputsa VS, VD . . . . . . . . . . . . . . . . . . . . . . . . . . . (V−) −2 V to (V+) +2 V or 30 mA, whichever occurs first Continuous Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Current, S or D (Pulsed 1 ms, 10% duty cycle) . . . . . . . . . . . . . . . . . . 100 mA Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125_C Power Dissipation (Package)b 16-Pin Plastic DIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW 16-Pin Narrow Body SOICd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW QFN-16d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 850 mW Notes: a. Signals on SX, DX, or INX exceeding V+ or V− will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads welded or soldered to PC Board. c. Derate 6 mW/_C above 75_C d. Derate 12 mW/_C above 25_C 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. SPECIFICATIONSa FOR DUAL SUPPLIES Test Conditions Unless Otherwise Specified Parameter Limits −40 to 85_C V+ = 15 V, V− = −15 V, VL = 5 V. VIN = 2.4 V, 0.8 Vf Tempb Mind VANALOG Full −15 rDS(on) IS = 1 mA, VD = #10 V Room Full 45 80 95 rDS(on) IS = 1 mA, VD = "10 V Room Full 2 4 5 Symbol Typc Maxd Unit 15 V Analog Switch Analog Signal Rangee Drain-Source On-Resistance On-Resistance Match Between Channelse Switch Off Leakage Current Channel On Leakage Current IS(off) ID(off) ID(on) VD = "14 V V, VS = #14 V VS = VD = "14 V Room Full −0.5 −5 "0.01 0.5 5 Room Full −0.5 −5 "0.01 0.5 5 Room Full −0.5 −10 #0.02 0.5 10 nA Digital Control Input Voltage Low VINL Full Input Voltage High VINH Full 2.4 0.8 Input Current VIN Low IINL VIN under test = 0.8 V, All Other = 2.4 V Full −1 −0.01 1 Input Current VIN High IINH VIN under test = 2.4 V, All Other = 0.8 V Full −1 0.01 1 Turn-On Time tON 120 220 tOFF RL = 1 k , CL = 35 pF VS = 10 V, See Figure 2 Room Turn-Off Time Room 65 120 Q CL = 1 nF, VS = 0 V, Vgen = 0 V, Rgen = 0 Room −1 Off Isolatione OIRR 90 XTALK RL = 50 , CL = 15 pF, VS = 1 VRMS f = 100 kHz Room Crosstalke (Channel-to-Channel) Room 95 Room 4 V A Dynamic Characteristics Charge Injectione Source Off Capacitancee CS(off) Drain Off Capacitancee CD(off) Channel On Capacitancee CD(on) f = 1 MHz VS = VD = 0 V, f = 1 MHz Room 4 Room 16 ns pC dB pF p Power Supplies Positive Supply Current I+ Negative Supply Current I− www.vishay.com 2 V+ = 16.5 V, V− = −16.5 V VIN = 0 or 5 V Room Full Room Full 1 5 −1 −5 A Document Number: 72625 S-32553—Rev. A, 15-Dec-03 DG441B/442B Vishay Siliconix New Product SPECIFICATIONSa FOR SINGLE SUPPLY Test Conditions Otherwise Unless Specified Parameter Symbol V+ = 12 V, V− = 0 V, VIN = 2.4 V, 0.8 Vf Limits −40 to 85_C Tempb Mind Full 0 Typc Maxd Unit 12 V Analog Switch Analog Signal Rangee Drain-Source On-Resistance VANALOG Room Full 90 160 200 RL = 1 k , CL = 35 pF VS = 8 V, See Figure 2 Room 120 300 Room 60 200 CL = 1 nF Vgen = 6 V, Rgen = 0 Room 4 rDS(on) IS = 1 mA, VD = 3 V, 8 V Turn-On Time tON Turn-Off Time tOFF Q Dynamic Characteristics Charge Injection ns pC Power Supplies Positive Supply Current I+ VIN = 0 or 5 V Negative Supply Current I− Room Full Room Full 1 5 −1 −5 A Notes: a. Refer to PROCESS OPTION FLOWCHART. b. Room = 25_C, Full = as determined by the operating temperature suffix. c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. e. Guaranteed by design, not subject to production test. f. VIN = input voltage to perform proper function. SCHEMATIC DIAGRAM (TYPICAL CHANNEL) V+ 5 V Reg INX V− Level Shift/ Drive V+ GND V− FIGURE 1. Document Number: 72625 S-32553—Rev. A, 15-Dec-03 www.vishay.com 3 DG441B/442B Vishay Siliconix New Product TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) rDS(on) vs. VD and Power Supply Voltages rDS(on) vs. VD and Temperature 110 100 100 90 90 80 "5 V 70 r DS(on) ( ) 80 r DS(on) ( ) V+ = 15 V V− = −15 V 70 "10 V 60 50 "15 V 40 "20 V 30 60 125_C 50 85_C 40 25_C 30 −55_C 20 20 10 0 −15 10 −20 −16 −12 −8 −4 0 4 8 12 16 20 −10 −5 0 5 10 15 VD − Drain Voltage (V) VD − Drain Voltage (V) rDS(on) vs. VD and Single Power Supply Voltages Input Switching Threshold vs. Supply Voltage 250 2.5 225 V+ = 5 V 200 2 150 V TH ( V ) r DS(on) ( ) 175 7V 125 10 V 100 12 V 1.5 1 15 V 75 50 0.5 25 0 0 0 2 4 6 8 10 12 14 16 4 6 8 VD − Drain Voltage (V) 12 14 16 18 20 V+ Positive Supply (V) Leakage Currents vs. Analog Voltage Leakage Currents vs. Temperature 80 60 10 1 nA V+ = 22 V V− = −22 V TA = 25_C V+ = 15 V V− = −15 V VS, VD = "14 V I S, I D − Current I S,I D − Current (pA) 40 20 0 −20 IS(off), ID(off) ID(on) 100 pA IS(off), ID(off) 10 pA −40 −60 −80 −20 www.vishay.com 4 −15 −10 −5 0 5 Temperature (_C) 10 15 20 1 pA −55 −35 −15 5 25 45 65 85 105 125 Temperature (_C) Document Number: 72625 S-32553—Rev. A, 15-Dec-03 DG441B/442B Vishay Siliconix New Product TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Switching Time vs. Single Supply Voltage Switching Time vs. Power Supply Voltage 400 500 V− = 0 V 300 Switching Time (ns) Switching Time (ns) 400 300 200 ton 200 ton 100 100 toff toff 0 2 4 6 8 10 12 14 16 18 0 20 0 V+ − Positive Supply (V) 30 "4 "8 "12 "16 "20 V+, V− Positive and Negative Supplies (V) QS, QD − Charge Injection vs. Analog Voltage Off Isolation vs. Frequency 120 V+ = 15 V V− = −15 V 110 20 0 V+ = 15 V V− = −15 V OIRR (dB) Q − Charge (pC) 100 10 V+ = 12 V V− = 0 V 90 RL = 50 80 70 −10 60 −20 −30 −15 50 40 −10 −5 0 5 10 15 10 k 100 k VANALOG − Analog Voltage (V) 1M 10 M f − Frequency (Hz) Supply Current vs. Switching Frequency I+ − Supply Current (mA) 4 3 2 1 0 1k 10 k 100 k 1M f − Frequency (Hz) Document Number: 72625 S-32553—Rev. A, 15-Dec-03 www.vishay.com 5 DG441B/442B Vishay Siliconix New Product TEST CIRCUITS +15 V 3V Logic Input 50% V+ S 10 V 0V D VO IN 3V GND tr <20 ns tf <20 ns 50% CL 35 pF RL 1 k V− −15 V Switch Input VS Switch Output 0V CL (includes fixture and stray capacitance) tOFF VO 80% 80% tON Note: Logic input waveform is inverted for DG442. FIGURE 2. Switching Time +15 V V O VO V+ Rg S D INX VO IN CL 1 nF 3V V− GND OFF ON INX OFF ON Q = VO x CL (DG442B) −15 V OFF (DG441B) OFF FIGURE 3. Charge Injection C = 1 mF tantalum in parallel with 0.01 mF ceramic +15 V C +15 V C V+ S1 VS Rg = 50 D1 IN1 50 S2 VO 0V, 2.4 V D2 V− GND C V− C −15 V −15 V XTALK Isolation = 20 log C = RF bypass RL IN 0V, 2.4 V RL IN2 GND VO D Rg = 50 0V, 2.4 V NC V+ S VS Off Isolation = 20 log VS VS VO VO FIGURE 4. Crosstalk FIGURE 5. Off Isolation +15 V C S V+ Meter 0 V, 2.4 V IN HP4192A Impedance Analyzer or Equivalent D GND V− C −15 V FIGURE 6. Source/Drain Capacitances www.vishay.com 6 Document Number: 72625 S-32553—Rev. A, 15-Dec-03 DG441B/442B Vishay Siliconix New Product APPLICATIONS +24 V +15 V RL DG442B V+ I = 3A 150 +15 V VN0300L, M IN +15 V VIN 10 k +15 V GND 1/4 DG442B S + D − CH V− IN 0 = Load Off 1 = Load On −15 V FIGURE 7. Power MOSFET Driver VIN VOUT + − H = Sample L = Hold FIGURE 8. Open Loop Sample-and-Hold + − VOUT +15 V Gain error is determined only by the resistor tolerance. Op amp offset and CMRR will limit accuracy of circuit. V+ GAIN1 AV = 1 R1 90 k GAIN2 AV = 10 R2 5 k With SW4 Closed VOUT VIN GAIN3 AV = 20 R3 4 k GAIN4 AV = 100 R4 1 k = R1 + R2 + R3 + R4 R4 = 100 DG441 or DG442 V− GND −15 V FIGURE 9. Precision-Weighted Resistor Programmable-Gain Amplifier Document Number: 72625 S-32553—Rev. A, 15-Dec-03 www.vishay.com 7