DG381B/384B/387B/390B 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 DG381B–DG390B series of monolithic CMOS analog switches was 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 DG381B Plastic Dip S1 1 TRUTH TABLE 14 S2 Logic Switch 0 ON 1 OFF D1 2 13 D2 NC 3 12 NC NC 4 11 NC IN1 5 10 IN2 V+ 6 9 V– NC 7 8 GND Logic “0” v 0.8 V Logic “1” w 4 V Top View Document Number: 71404 S-02968—Rev. A, 22-Jan-01 www.vishay.com 1 DG381B/384B/387B/390B Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG384B 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 DG387B Dual-In-Line NC 1 14 NC NC 2 13 NC D1 3 12 D2 S1 4 11 S2 IN 5 10 NC V+ 6 9 V– NC 7 8 GND TRUTH TABLE Logic SW1 SW2 0 ON OFF 1 OFF ON Logic “0” v 0.8 V Logic “1” w 4 V Top View DG390B Dual-In-Line D1 1 16 S1 NC 2 15 IN1 D3 3 14 V– S3 4 13 GND S4 5 12 NC 6 11 V+ D4 NC 7 10 IN2 D2 8 9 S2 TRUTH TABLE Logic SW1, SW2 SW3, SW4 0 OFF ON 1 ON OFF Logic “0” v 0.8 V Logic “1” w 4 V Top View www.vishay.com 2 Document Number: 71404 S-02968—Rev. A, 22-Jan-01 DG381B/384B/387B/390B Vishay Siliconix ORDERING INFORMATION Temp Range Package Part Number 14-Pin Plastic DIP DG381BDJ 16-Pin Plastic DIP DG384BDJ 14-Pin Plastic DIP DG387BDJ 16-Pin Plastic DIP DG390BDJ DG381B –40 to 85_C DG384B –40 to 85_C DG387B –40 to 85_C DG390B –40 to 85_C ABSOLUTE MAXIMUM RATINGS Voltages Referenced to V– Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65 to 150_C V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V Power Dissipationb 14-Pin Plastic DIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW 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 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 SCHEMATIC DIAGRAM (TYPICAL CHANNEL) V+ S V– VIN Level Shift/ Drive V+ GND D V– FIGURE 1. Document Number: 71404 S-02968—Rev. A, 22-Jan-01 www.vishay.com 3 DG381B/384B/387B/390B Vishay Siliconix SPECIFICATIONSa Limits Test Conditions Unless Specified –40 to 85_C V+ = 15 V, V– = –15 V VIN = 0.8 V or 4 Vf Tempb Mind VANALOG Full –15 rDS(on) VD = "10 V, IS = –10 mA Room Full Source Off Leakage Current IS(off) VS = "14 V, VD = #14 V Room Hot Drain Off Leakage Current ID(off) VS = "14 V, VD = #14 V Drain On Leakage Current ID(on) Parameter Symbol Typc Maxd Unit Analog Switch Analog Signal Rangee Drain-Source On-Resistance 15 V 30 50 75 W –5 –100 "0.1 5 100 Room Hot –5 –100 "0.1 5 100 VD = VS = "14 V Room Hot –5 –100 "0.1 5 100 VIN = 5 V Room Full –1 –0.001 VIN = 15 V Room Full VIN = 0 V Room Full nA Digital Control Input Current with Input Voltage High IINH Input Current with Input Voltage Low IINL 0.001 –1 1 mA –0.001 Dynamic Characteristics Turn-On Time tON Turn-Off Time tOFF Break-Before-Make Time Charge Injection Source-Off Capacitance Room 150 Room 130 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) I– –100 Room Full VIN = 0.8 V (All Inputs) Negative Supply Current Room Full Room Full mA –0.001 0.001 –100 1 100 mA –0.001 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: 71404 S-02968—Rev. A, 22-Jan-01 DG381B/384B/387B/390B 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) 2 1 0 5 10 V+ – Positive Supply Voltage (V) Document Number: 71404 S-02968—Rev. A, 22-Jan-01 15 300 I+, I– ( A) ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇ 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 DG381B/384B/387B/390B 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: 71404 S-02968—Rev. A, 22-Jan-01 DG381B/384B/387B/390B 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 RL2 300 W CL1 33 pF CL2 33 pF VINH 50% 0V Switch Output RL1 300 W V– GND Logic “1” = Switch On Logic Input 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 (DG387B, DG390B) +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: 71404 S-02968—Rev. A, 22-Jan-01 www.vishay.com 7 DG381B/384B/387B/390B Vishay Siliconix APPLICATIONS The DG381B series of analog switches 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 + DG381B R FIGURE 5. Integrator with Reset and Start/Stop www.vishay.com 8 Document Number: 71404 S-02968—Rev. A, 22-Jan-01