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| 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 D1 NC NC IN1 V+ NC S2 D2 NC NC IN2 V- GND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 TRUTH TABLE Logic 0 1 Logic "0" v 0.8 V Logic "1" w 4 V Switch ON OFF 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 NC D3 S3 S4 D4 NC D2 S1 IN1 V- GND NC V+ IN2 S2 1 2 3 4 5 6 7 8 Top View 16 15 14 13 12 11 10 9 TRUTH TABLE Logic 0 1 Logic "0" v 0.8 V Logic "1" w 4 V Switch OFF ON DG387B Dual-In-Line NC NC D1 S1 IN V+ NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 NC NC D2 S2 NC V- GND TRUTH TABLE Logic 0 1 SW1 ON OFF Logic "0" v 0.8 V Logic "1" w 4 V SW2 OFF ON Top View DG390B Dual-In-Line D1 NC D3 S3 S4 D4 NC D2 S1 IN1 V- GND NC V+ IN2 S2 1 2 3 4 5 6 7 8 Top View 16 15 14 13 12 11 10 9 TRUTH TABLE Logic 0 1 SW1, SW2 OFF ON Logic "0" v 0.8 V Logic "1" w 4 V SW3, SW4 ON OFF www.vishay.com 2 Document Number: 71404 S-02968--Rev. A, 22-Jan-01 DG381B/384B/387B/390B Vishay Siliconix ORDERING INFORMATION Temp Range DG381B -40 to 85_C 14-Pin Plastic DIP DG381BDJ Package Part Number DG384B -40 to 85_C 16-Pin Plastic DIP DG384BDJ DG387B -40 to 85_C 14-Pin Plastic DIP DG387BDJ DG390B -40 to 85_C 16-Pin Plastic DIP DG390BDJ ABSOLUTE MAXIMUM RATINGS 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 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to 150_C Power Dissipationb 14-Pin Plastic DIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 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 11 mW/_C above 75_C d. Derate 6.5 mW/_C above 25_C 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 Test Conditions Unless Specified Parameter Analog Switch Analog Signal Rangee Drain-Source On-Resistance Source Off Leakage Current Drain Off Leakage Current Drain On Leakage Current VANALOG rDS(on) IS(off) ID(off) ID(on) VD = "10 V, IS = -10 mA VS = "14 V, VD = #14 V VS = "14 V, VD = #14 V VD = VS = "14 V Full Room Full Room Hot Room Hot Room Hot -5 -100 -5 -100 -5 -100 -15 30 "0.1 "0.1 "0.1 15 50 75 5 100 5 100 5 100 nA V W Limits -40 to 85_C Symbol V+ = 15 V, V- = -15 V VIN = 0.8 V or 4 Vf Tempb Mind Typc Maxd Unit Digital Control Input Current with Input Voltage High Input Current with Input Voltage Low VIN = 5 V IINH VIN = 15 V IINL VIN = 0 V Room Full Room Full Room Full -1 -1 -0.001 0.001 -0.001 1 mA Dynamic Characteristics Turn-On Time Turn-Off Time Break-Before-Make Time Charge Injection Source-Off Capacitance Drain-Off Capacitance Channel-On Capacitance Input Capacitance Off-Isolation Crosstalk (Channel-to-Channel) tON tOFF tOPEN Q CS(off) CD(off) CD(on) CIN OIRR XTALK f = 1 MHz VIN = 0 V VIN = 15 V f = 1 MHz; VS, VD = 0 V Room See Figure 2 See Figure 3 CL = 0.01 mF, Rgen = 0 W Vgen = 0 V Room Room Room Room Room Room Room Room Room Room 150 130 50 10 14 14 40 6 7 62 74 dB pF pC ns VIN = 0 V, RL = 1 kW W VS = 1 Vrms, f = 500 kHz Power Supplies Positive Supply Current Negative Supply Current Positive Supply Current Negative Supply Current I+ I- I+ VIN = 0.8 V (All Inputs) I- VIN = 4 V (One Input) (All Others = 0) Room Full Room Full Room Full Room Full -100 -100 0.23 1 mA -0.001 0.001 -0.001 100 mA 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 100 r DS(on) Drain-Source On-Resistance ( W ) - r DS(on) Drain-Source On-Resistance ( W ) - TA = 25_C 80 "5 V 60 "7.5 V 40 "10 V "15 V 20 "20 V 60 V+ = 15 V V- = -15 V 50 rDS(on) vs. VD and Temperature 40 125_C 30 25_C 20 -55_C 10 -15 -10 -5 0 5 10 15 0 -20 -15 -10 -5 0 5 10 15 20 VD - Drain Voltage (V) VD - Drain Voltage (V) Charge Injection vs. Analog Voltage (VS) 50 V+ = 15 V V- = -15 V CL = 1 nF 500 Switching Time and Break-Before-Make Time vs. Positive Supply Voltage V- = -15 V TA = 25_C VINH = 4 V VINL = 0 V tOFF 300 40 400 t ON , t OFF (ns) 30 Q (pC) 20 200 tON 10 100 tOPEN DG301/303 Only 0 -15 0 -10 -5 0 5 10 15 0 5 10 15 VS - Source Voltage (V) V+ - Positive Supply Voltage (V) Input Switching Threshold vs. Positive Supply Voltage 5 V- = 0 to -15V TA = 25_C 4 400 500 Supply Current vs. Temperature 300 3 V T (V) I+, I- ( A) V+ = 15 V V- = -15 V VIN = 4 V (One Input) (All Other = 0 V) I+ 2 1 0 5 V+ - Positive Supply Voltage (V) Document Number: 71404 S-02968--Rev. A, 22-Jan-01 CCCCCCCC CCCCCCCC CCCCCCCC CCCCCCCC 10 15 200 100 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 120 15 V+ = 15 V V- = -15 V 100 Crosstalk 10 I+, I- (mA) 80 (dB) Off Isolation 60 V+ = 15 V V- = -15 V RL= 50 W Supply Curents vs. Switching Frequency 5 +I 40 -I 0 20 10 k 100 k 1M 10 M 1k 10 k 100 k 1M f - Frequency (Hz) f - Frequency (Hz) Leakage vs. Temperature 100 nA V+ = 15 V V- = -15 V VS, VD = "14 V 400 350 300 t ON t OFF (ns) , 250 200 150 100 50 10 pA -55 -35 0 -15 5 25 45 65 85 105 125 10 Switching Time vs. Power Supply Voltage V+ = 15 V V- = -15 V 10 nA I S, I D Current ID(on) 1 nA tON tOFF 100 pA ID(off) or IS(off) 12 14 16 18 20 22 Temperature (_C) V+, V- Positive and Negative Supplies (V) Switching Time vs. Temperature 400 r DS(on) Drain-Source On-Resistance ( W ) - 350 300 t ON t OFF (ns) , 250 200 150 100 50 0 -55 tOFF tON V+ = 15 V V- = -15 V VS = 3 V 170 150 130 110 90 70 50 30 10 -35 -15 5 25 45 65 85 105 125 rDS(on) vs. Analog and Positive Supply Voltage V- = 0 V TA = 25_C V+ = 5 V V+ = 10 V V+ = 15 V 0 2 4 6 8 10 12 14 Temperature (_C) V+, V- Positive and Negative Supplies (V) www.vishay.com 6 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 S IN 5V GND V- RL 300 W CL 33 pF VS 90% 10% 0V -15 V CL (includes fixture and stray capacitance) VO = VS RL RL + rDS(on) Switch Output tON tOFF D VO Logic Input 0V 50% VINH FIGURE 2. Switching Time +15 V Logic Input D1 D2 VO2 VO1 Switch Output RL1 300 W RL2 300 W CL2 33 pF CL1 33 pF 0V VS1 VO1 0V VS2 Switch Output VO2 50% 0V tBBM 50% Logic "1" = Switch On VINH 50% V+ VS1 = 3 V VS2 = 3 V S1 S2 IN GND V- -15 V CL (includes fixture and stray capacitance) FIGURE 3. Break-Before-Make SPDT (DG387B, DG390B) +15 V Rg V+ S IN D CL 1 nF V- VO VO DVO Vg 5V INX ON OFF ON GND -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. SW1 RD C Reset VIN Start/Stop SW2 R - V O + RC 1 V IN * dt DG381B R + FIGURE 5. Integrator with Reset and Start/Stop www.vishay.com 8 Document Number: 71404 S-02968--Rev. A, 22-Jan-01 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1 |
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