DG384A/387A Vishay Siliconix CMOS Analog Switches FEATURES D D D D BENEFITS APPLICATIONS "15-V Input Range D Full Rail-to-Rail Analog Signal Range D Low Level Switching Circuits Low rDS(on): 30 W D Minimizes Signal Error D Programmable Gain Amplifiers Single Supply Operation D Low Power Dissipation D Portable and Battery Powered Sytems Pin and Function Compatible with the JFET DG180 Family DESCRIPTION The DG384A and DG387A monolithic CMOS analog switches were designed for applications in instrumentation, communications, and process control. This series is suited for applications requiring fast switching and nearly flat on-resistance over the entire voltage range. switches are ideal for battery powered applications, without sacrificing switching speed. Break-before-make switching action is guaranteed, and an epitaxial layer prevents latchup. Single supply operation is allowed by connecting the V– rail to 0 V. Designed on Vishay Siliconix’ PLUS-40 CMOS process, these devices achieve low power consumption (3.5 mW typical) and excellent on/off switch performance. These Each switch conducts equally well in both directions when on, and blocks up to the supply voltage when off. These switches are CMOS and quasi TTL logic compatible. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG384A Dual-In-Line D1 1 16 S1 NC 2 15 IN1 D3 3 14 V– S3 4 13 GND S4 5 12 NC D4 6 11 V+ NC 7 10 IN2 D2 8 9 S2 TRUTH TABLE Logic Switch 0 OFF 1 ON Logic “0” v 0.8 V Logic “1” w 4 V Top View Document Number: 70048 S-02969—Rev. E, 22-Jan-01 www.vishay.com 1 DG384A/387A Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG387A DG387A Dual-In-Line Metal Can NC 1 14 NC NC 2 13 NC D1 3 12 D2 D2 D1 S2 10 1 9 S1 S1 4 11 S2 IN 5 10 NC V+ 6 9 V– NC 7 8 GND NC IN 2 8 3 7 6 4 V+ (Substrate and Case) V– 5 GND NC Top View Top View TRUTH TABLE Logic SW1 SW2 0 ON OFF 1 OFF ON Logic “0” v 0.8 V Logic “1” w 4 V ORDERING INFORMATION Temp Range Package Part Number DG384A 0 to 70_C 16-Pin Plastic DIP –55 to 125_C 16-Pin CerDIP DG384ACJ DG384AAK/883, 5962-9678801QEA DG387A 0 to 70_C –55 to 125_C _ www.vishay.com 2 14-Pin Plastic DIP DG387ACJ 14-Pin CerDIP DG387AAK/883 10-Pin Metal Can DG387AAA/883 Document Number: 70048 S-02969—Rev. E, 22-Jan-01 DG384A/387A Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Power Dissipationb 14-Pin Plastic DIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW 14-Pin CerDIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825 mW 10-Pin Metal Cane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mW Voltages Referenced to V– V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V Digital Inputsa, VS, VD . . . . . . . . . . . . . . . . . . . . . . . . (V–) –2 V to (V+) +2V or 30 mA, whichever occurs first 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 11 mW/_C above 75_C d. Derate 6.5 mW/_C above 25_C e. Derate 6 mW/_C above 75_C Current, Any Terminal Except S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA (Pulsed at 1 ms, 10% duty cycle max) . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Storage Temperature (AA, AK, Suffix) . . . . . . . . . . . . . . –65 to 150_C (CJ Suffix) . . . . . . . . . . . . . . . . . . . –65 to 125_C SCHEMATIC DIAGRAM (TYPICAL CHANNEL) V+ S V– VIN Level Shift/ Drive V+ GND D V– FIGURE 1. Document Number: 70048 S-02969—Rev. E, 22-Jan-01 www.vishay.com 3 DG384A/387A Vishay Siliconix SPECIFICATIONSa Test Conditions Unless Specified A Suffix C Suffix –55 to 125_C 0 to 70_C V+ = 15 V, V– = –15 V VIN = 0.8 V or 4 Vf Tempb VANALOG Full rDS(on) VD = "10 V, IS = –10 mA Room Full 30 Source Off Leakage Current IS(off) VS = "14 V, VD = #14 V Room Hot "0.1 –1 –100 1 100 –5 –100 5 100 Drain Off Leakage Current ID(off) VS = "14 V, VD = #14 V Room Hot "0.1 –1 –100 1 100 –5 –100 5 100 Drain On Leakage Current ID(on) VD = VS = "14 V Room Hot "0.1 –11 –100 1 100 –5 –100 5 100 VIN = 5 V Room Full –0.001 –1 –1 VIN = 15 V Room Full 0.001 VIN = 0 V Room Full –0.001 Room 150 300 Room 130 250 Parameter Symbol Typc Mind Maxd Mind Maxd Unit –15 15 –15 15 V 50 75 W Analog Switch Analog Signal Rangee Drain-Source On-Resistance 50 75 nA Digital Control Input Current with Input Voltage High IINH Input Current with Input Voltage Low IINL –1 1 1 1 –1 –1 mA –1 Dynamic Characteristics Turn-On Time tON Turn-Off Time tOFF Break-Before-Make Time Charge Injection Source-Off Capacitance tOPEN See Figure 3 Room 50 Q CL = 0.01 mF, Rgen = 0 W Vgen = 0 V Room 10 Room 14 Room 14 Room 40 VIN = 0 V Room 6 VIN = 15 V Room 7 Room 62 Room 74 Room Full 0.23 CS(off) Drain-Off Capacitance CD(off) Channel-On Capacitance CD(on) Input Capacitance See Figure 2 CIN Off-Isolation OIRR Crosstalk (Channel-to-Channel) XTALK f = 1 MHz; VS, VD = 0 V f = 1 MHz VIN = 0 V, RL = 1 kW W VS = 1 Vrms, f = 500 kHz ns pC pF dB Power Supplies Positive Supply Current I+ Negative Supply Current I– Positive Supply Current I+ VIN = 4 V (One Input) (All Others = 0) VIN = 0.8 V (All Inputs) Negative Supply Current I– Room Full –0.001 Room Full 0.001 Room Full –0.001 0.5 1.0 –10 –100 1 –100 10 100 –10 –100 mA 100 mA –100 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. www.vishay.com 4 Document Number: 70048 S-02969—Rev. E, 22-Jan-01 DG384A/387A Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) rDS(on) vs. VD and Power Supply rDS(on) vs. VD and Temperature 60 TA = 25_C r DS(on)– Drain-Source On-Resistance ( W ) r DS(on)– Drain-Source On-Resistance ( W ) 100 80 "5 V 60 "7.5 V 40 "10 V "15 V 20 0 "20 V –20 –15 –10 –5 0 5 10 15 50 40 125_C 30 25_C 20 –55_C 10 20 –15 –10 –5 0 5 10 15 VD – Drain Voltage (V) VD – Drain Voltage (V) Charge Injection vs. Analog Voltage (VS) Switching Time and Break-Before-Make Time vs. Positive Supply Voltage 50 500 V+ = 15 V V– = –15 V CL = 1 nF 40 V+ = 15 V V– = –15 V V– = –15 V TA = 25_C VINH = 4 V VINL = 0 V t ON , t OFF (ns) 400 Q (pC) 30 20 10 tOFF 300 tON 200 100 tOPEN DG301/303 Only 0 –15 0 –10 –5 0 5 10 15 0 5 VS – Source Voltage (V) 10 15 V+ – Positive Supply Voltage (V) Input Switching Threshold vs. Positive Supply Voltage Supply Current vs. Temperature 5 500 V– = 0 to –15V TA = 25_C 400 4 V T (V) ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ 2 1 0 5 10 V+ – Positive Supply Voltage (V) Document Number: 70048 S-02969—Rev. E, 22-Jan-01 15 I+, I– ( A) 300 3 200 I+ V+ = 15 V V– = –15 V VIN = 4 V (One Input) (All Other = 0 V) 100 I– 0 –100 –55 –35 –15 5 25 45 65 85 105 125 Temperature (_C) www.vishay.com 5 DG384A/387A Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Off Isolation and Crosstalk vs. Frequency Supply Curents vs. Switching Frequency 120 15 V+ = 15 V V– = –15 V 100 Crosstalk 10 I+, I– (mA) (dB) 80 Off Isolation 60 5 40 V+ = 15 V V– = –15 V RL= 50 W +I –I 0 20 10 k 100 k 1M 1k 10 M 10 k f – Frequency (Hz) 400 V+ = 15 V V– = –15 V VS, VD = "14 V V+ = 15 V V– = –15 V 350 300 t ON, t OFF (ns) I S, I D Current 1M Switching Time vs. Power Supply Voltage Leakage vs. Temperature 100 nA 10 nA 100 k f – Frequency (Hz) ID(on) 1 nA 100 pA ID(off) or IS(off) 250 tON 200 tOFF 150 100 50 10 pA –55 –35 0 –15 5 25 45 65 85 105 10 125 Switching Time vs. Temperature 170 400 V+ = 15 V V– = –15 V VS = 3 V r DS(on)– Drain-Source On-Resistance ( W ) 350 t ON, t OFF (ns) 300 250 tON 200 150 tOFF 100 50 0 –55 6 14 16 18 20 22 rDS(on) vs. Analog and Positive Supply Voltage V– = 0 V TA = 25_C 150 V+ = 5 V 130 110 90 V+ = 10 V 70 V+ = 15 V 50 30 10 –35 –15 5 25 45 65 Temperature (_C) www.vishay.com 12 V+, V– Positive and Negative Supplies (V) Temperature (_C) 85 105 125 0 2 4 6 8 10 12 14 V+, V– Positive and Negative Supplies (V) Document Number: 70048 S-02969—Rev. E, 22-Jan-01 DG384A/387A Vishay Siliconix TEST CIRCUITS +15 V Logic “1” = Switch On V+ VS = 3 V Logic Input D S VO 50% VINH 0V IN RL 300 W 5V V– GND VS CL 33 pF 90% 10% 0V –15 V Switch Output CL (includes fixture and stray capacitance) tON tOFF RL VO = VS RL + rDS(on) FIGURE 2. Switching Time +15 V V+ VS1 = 3 V VS2 = 3 V S1 D1 S2 D2 VO1 VO2 IN V– GND Logic “1” = Switch On Logic Input Switch Output RL1 300 W RL2 300 W CL1 33 pF CL2 33 pF VINH 50% 0V VS1 50% VO1 0V VS2 VO2 Switch Output 50% 0V tBBM –15 V CL (includes fixture and stray capacitance) FIGURE 3. Break-Before-Make SPDT (DG387A) +15 V Rg V+ S IN Vg VO CL 1 nF 5V GND DVO D VO INX ON V– OFF ON –15 V FIGURE 4. Charge Injection Document Number: 70048 S-02969—Rev. E, 22-Jan-01 www.vishay.com 7 DG384A/387A Vishay Siliconix APPLICATIONS The DG384A and DG387A will switch positive analog signals while using a single positive supply. This allows their use in applications where only one supply is available. The trade-offs or performance given up while using single supplies are: 1) increased rDS(on), 2) slower switching speed. Typical curves for aid in designing with single supplies are supplied (see Typical Characteristics). The analog voltage should not go above or below the supply voltages which in single operation are V+ and 0 V. In the integrator of Figure 4, RD controls the discharge rate of the capacitor so that the pulsed or continuous current ratings are not exceeded. During reset SW1 is closed and SW2 is open. Opening SW2 with SW1 also open will hold the integrator output at its present value. RD SW1 C Reset VIN R SW2 – 1 V O + RC Start/Stop ŕ VIN ·Ădt + DG381A R FIGURE 5. Integrator with Reset and Start/Stop www.vishay.com 8 Document Number: 70048 S-02969—Rev. E, 22-Jan-01