DG300B/301B/302B/303B Vishay Siliconix CMOS Analog Switches FEATURES BENEFITS APPLICATIONS D D D D D D D Full Rail-to-Rail Analog Signal Range D Low Signal Error D Low Power Dissipation D Low Level Switching Circuits D Programmable Gain Amplifiers D Portable and Battery Powered Systems Analog Signal Range: "15 V Fast Switching—tON: 150 ns Low On-Resistance—rDS(on): 30 Single Supply Operation Latch-up Proof CMOS Compatible DESCRIPTION The DG300B-DG303B family of monolithic CMOS switches feature three switch configuration options (SPST, SPDT, and DPST) for precision applications in communications, instrumentation and process control, where low leakage switching combined with low power consumption are required. Designed on the Vishay Siliconix PLUS-40 CMOS process, these switches are latch-up proof, and are designed to block up to 30 V peak-to-peak when off. An epitaxial layer prevents latchup. In the on condition the switches conduct equally well in both directions (with no offset voltage) and minimize error conditions with their low on-resistance. Featuring low power consumption (3.5 mW typ) these switches are ideal for battery powered applications, without sacrificing switching speed. Designed for break-before-make switching action, these devices are CMOS and quasi TTL compatible. Single supply operation is allowed by connecting the V– rail to 0 V. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG300B Plastic DIP TRUTH TABLE NC 1 14 V+ D1 2 13 D2 NC 3 12 NC S1 4 11 S2 NC 5 10 NC IN1 6 9 IN2 GND 7 8 V– Logic Switch 0 OFF 1 ON Logic “0” v 0.8 V Logic “1” w 4 V Top View Document Number: 71402 S-02968—Rev. A, 22-Jan-01 www.vishay.com 1 DG300B/301B/302B/303B Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG301B Plastic DIP NC 1 14 V+ D1 2 13 D2 NC 3 12 NC S1 4 11 S2 NC 5 10 NC IN 6 9 NC GND 7 8 V– TRUTH TABLE Logic SW1 SW2 0 OFF ON 1 ON OFF Logic “0” v 0.8 V Logic “1” w 4 V Top View DG302B Plastic DIP NC 1 14 V+ S3 2 13 S4 D3 3 12 D4 D1 4 11 D2 S1 5 10 S2 IN1 6 9 IN2 GND 7 8 V– TRUTH TABLE Logic Switch 0 OFF 1 ON Logic “0” v 0.8 V Logic “1” w 4 V Top View DG303B Plastic DIP and SOIC NC 1 14 V+ S3 2 13 S4 D3 3 12 D4 D1 4 11 D2 S1 5 10 S2 IN1 6 9 IN2 GND 7 8 V– 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: 71402 S-02968—Rev. A, 22-Jan-01 DG300B/301B/302B/303B Vishay Siliconix ORDERING INFORMATION Temp Range Package Part Number 14-Pin Plastic DIP DG300BDJ 14-Pin Plastic DIP DG301BDJ 14-Pin Plastic DIP DG302BDJ 14-Pin Plastic DIP DG303BDJ 14-SOIC DG303BDY DG300B –40 to 85_C DG301B –40 to 85_C DG302B –40 to 85_C DG303B –40 to 85_C _ ABSOLUTE MAXIMUM RATINGS Voltages Referenced to V– Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65 to 150_C V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V Power DissipationNO TAG 14-Pin Plastic DIPNO TAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V SOIC-14d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600 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 6.5 mW/_C above 25_C d. Derate 7.6 mW/_C above 75_C Digital InputsNO TAG, VS, VD . . . . . . . . . . . . . . . . . . . (V–) –2 V to (V+) +2V or 30 mA, whichever occurs first Current, Any Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Continuous Current, S or D (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: 71402 S-02968—Rev. A, 22-Jan-01 www.vishay.com 3 DG300B/301B/302B/303B Vishay Siliconix SPECIFICATIONSa Limits Test Conditions Unless Specified Parameter Symbol V+ = 15 V, V– = –15 V VIN = 0.8 V or VIN = 4 Vf –40 to 85_C Tempb Mind Typc Maxd Unit 15 V 50 75 Analog Switch Analog Signal Rangee VANALOG Full Drain-Source On-Resistance rDS(on) Room Full Source Off Leakage Current IS(off) VD = "10 V, IS = –10 mA Drain On Leakage Current 30 Room Hot –5 –100 "0.1 5 100 ID(off) Room Hot –5 –100 "0.1 5 100 ID(on) 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 VS = "14 " V, VD = #14 # V Drain Off Leakage Current –15 nA Digital Control Input Current with Input Voltage High IINH Input Current with Input Voltage Low IINL 0.001 –1 1 A –0.001 Dynamic Characteristics Turn-On Time tON Turn-Off Time tOFF Break-Before-Make Time Charge Injection Room 150 Room 130 tOPEN DG301B/303B Only Figure NO TAG Room 50 Q CL = 1 nF, Rgen = 0 Vgen = 0 V, Figure NO TAG Room 8 Room 14 Room 14 Room 40 VIN = 0 V Room 6 VIN = 15 V Room 7 Room 62 Room 74 Room Full 0.23 Source-Off Capacitance CS(off) Drain-Off Capacitance CD(off) Channel-On Capacitance CD(on) Input Capacitance Cin Off-Isolation OIRR Crosstalk (Channel-to-Channel) XTALK See Figure NO TAG VS, VD = 0 V, f = 1 MHz f = 1 MHz VIN = 0 V, RL = 1 k 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 V 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 A –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: 71402 S-02968—Rev. A, 22-Jan-01 DG300B/301B/302B/303B Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) rDS(on) vs. VD and Power Supply rDS(on) vs. VD and Temperature 60 70 ) "5 V "8 V 50 "10 V "12 V 30 "15 V "20 V 10 r DS(on)– Drain-Source On-Resistance ( r DS(on)– Drain-Source On-Resistance ( ) TA = 25_C –25 –15 –5 5 15 V+ = 15 V V– = –15 V 50 40 TA = 125_C 30 TA = 25_C 20 TA = –55_C 10 25 –15 –10 –5 0 5 10 15 VD – Drain Voltage (V) VD – Drain Voltage (V) rDS(on) vs. VD and Power Supply Voltage Switching Time and Break-Before-Make Time vs. Positive Supply Voltage 500 V– = 0 V TA = 25_C 100 7.5 V V– = –15 V TA = 25_C VINH = 4 V VINL = 0 V 400 80 t ON, t OFF (ns) r DS(on)– Drain-Source On-Resistance ( ) 90 10 V 60 300 tOFF 200 tON 15 V 40 20 V tOPEN 100 DG301B/303B Only 20 0 0 5 10 15 20 0 10 15 V+ – Positive Supply (V) Charge Injection vs. Analog Voltage Input Switching Threshold vs. Positive Supply Voltage 5 50 40 5 VD – Drain Voltage (V) V– = –15 V TA = 25_C V+ = 15 V V– = –15 V CL = 1 nF 4 30 Q (pC) V T (V) 3 20 2 10 1 0 –15 –10 –5 0 5 VS – Source Voltage (V) Document Number: 71402 S-02968—Rev. A, 22-Jan-01 10 15 0 5 10 15 V+ – Positive Supply (V) www.vishay.com 5 DG300B/301B/302B/303B Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Supply Current vs. Temperature Off Isolation and Crosstalk vs. Frequency –120 500 400 –100 Crosstalk I+ –80 (dB) I+, I– ( A) 300 V+ = 15 V V– = –15 V 200 VIN = 4 V 100 (One Input) (All Other = 0 V) Off Isolation –60 I– –40 0 –100 –55 –35 –15 5 25 45 65 85 105 V+ = +15 V V– = –15 V RL= 50 –20 10 k 125 100 k Temperature (_C) 1M 10 M f – Frequency (Hz) Supply Curents vs. Switching Frequency Leakage vs. Temperature 100 nA 15 V+ = 15 V V– = –15 V 10 nA V+ = 15 V V– = –15 V VS, VD = "14 V I S, I D I+, I– (mA) 10 ID(on) 1 nA 5 100 pA +I ID(off) or IS(off) –I 10 pA –55 –35 0 1k 10 k 100 k 1M –15 f – Frequency (Hz) 350 350 300 300 250 250 tON tOFF 50 50 "14 "16 "18 Supply Voltage (V) www.vishay.com 6 85 105 125 "20 105 125 V+ = 15 V V– = –15 V VS = 3 V tON tOFF 150 100 "12 65 200 100 0 "10 45 Switching Time vs. Temperature 400 Time (ns) Time (ns) Switching Time vs. Power Supply Voltage 150 25 Temperature (_C) 400 200 5 "22 0 –55 –35 –15 5 25 45 65 85 Temperature (_C) Document Number: 71402 S-02968—Rev. A, 22-Jan-01 DG300B/301B/302B/303B Vishay Siliconix TEST CIRCUITS +15 V Logic “1” = Switch On V+ VS = 3 V Logic Input D S VO 50% 0V IN 5V RL 300 V– GND VS CL 33 pF Switch Output 90% 10% 0V –15 V tON CL (includes fixture and stray capacitance) VO = VS tOFF RL RL + rDS(on) FIGURE 2. Switching Time +15 V V+ VS1 = 3 V VS2 = 3 V S1 D1 S2 D2 VO2 V– Switch Output RL1 300 RL2 300 CL1 33 pF CL2 33 pF VINH 50% 0V VO1 IN GND Logic “1” = Switch On Logic Input VS1 50% VO1 0V VS2 Switch Output 0 V VO2 50% tBBM –15 V CL (includes fixture and stray capacitance) FIGURE 3. Break-Before-Make SPDT (DG301B, DG303B) +15 V Rg V+ S IN Vg VO CL 1 nF 3V GND VO D VO INX ON V– OFF ON –15 V FIGURE 4. Charge Injection Document Number: 71402 S-02968—Rev. A, 22-Jan-01 www.vishay.com 7 DG300B/301B/302B/303B Vishay Siliconix APPLICATION HINTSNO TAG GND Voltage (V) VIN Logic Input Voltage VINH(min)/VINL(max) (V) VS or VD Analog Voltage Range (V) –15 0 4/0.8 –15 to 15 –20 0 4/0.8 –20 to 20 0 0 4/0.8 0 to 15 V+ Positive Supply Voltage (V) V– Negative Supply Voltage (V) 15 20 15 Note: a. Application Hints are for DESIGN AID ONLY, not guaranteed and not subject to production testing. APPLICATIONS The DG300B series of analog switches will switch positive analog signals while using a single positive supply. This facilitates their use in applications where only one supply is available. The trade-offs of using single supplies are: 1) Increased rDS(on); 2) slower switching speed. The analog voltage should not go above or below the supply voltages which in single operation are V+ and 0 V. (See Input Switching Threshold vs. Positive Supply Voltage Curve.) +15 V 50 k 10 k +15 V 5 k VOUT 10 F +15 V DG301B 100 k +5 V 5 k TTL Input 10 k FIGURE 5. Single Supply Op Amp Switching www.vishay.com 8 Document Number: 71402 S-02968—Rev. A, 22-Jan-01 DG300B/301B/302B/303B Vishay Siliconix +15 V CMOS Logic Input Select High = Diff. IN B –15 V +15 V Diff. IN A –15 V + – R4 75 k +15 V R2 R6 75 k 75 k Diff. IN B R1 16 k DG302B Ri1 1.5 k VOUT DG301B GND R2 75 k CMOS Logic Gain Select High = AV = 101 +15 V VOSNULL R5 R7 75 k 67 k 50 k Voltage gain of the instrumentation amplifier is: AV = 1 + 2R2 R1 (In the circuit shown, AV1 = 10.4, AV2 = 101) –15 V FIGURE 6. Low Power Instrumentation Amplifier with Digitally Selectable Inputs and Gain Document Number: 71402 S-02968—Rev. A, 22-Jan-01 www.vishay.com 9