DG300A/301A/302A/303A CMOS Analog Switches Features Benefits Applications Full Rail-to-Rail Analog Signal Range Low Signal Error Low Power Dissipation Low Level Switching Circuits Programmable Gain Amplifiers 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 DG300A-DG303A 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. 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. Designed on the 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. Functional Block Diagram and Pin Configuration DG300A DG300A Dual-In-Line Metal Can NC 1 14 V+ D1 2 13 D2 NC 3 12 NC S1 4 11 NC 5 10 IN1 GND 6 7 9 Top View 8 S2 V+ (Substrate and Case) D1 1 S1 D2 10 Truth Table 9 2 8 S2 NC IN2 IN1 3 Top View 4 V– NC 7 6 5 V– IN2 Logic Switch 0 OFF 1 ON 08V Logic “0” 0 0.8 1 4V Logic “1” GND Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70044. Siliconix S-52880—Rev. C, 28-Apr-97 1 DG300A/301A/302A/303A Functional Block Diagram and Pin Configuration (Cont’d) DG301A DG301A Dual-In-Line Metal Can V+ (Substrate and Case) 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– D1 D2 10 1 S1 2 IN 8 7 3 S2 Logic SW1 0 OFF ON 1 ON OFF 5 SW2 Logic “0” 0.8 V Logic “1” 1 4V NC 6 4 NC Truth Table 9 V– GND Top View Top View DG302A Dual-In-Line NC 1 14 V+ S3 2 13 S4 D3 3 12 D4 0 OFF D1 4 11 D2 1 S1 5 10 S2 IN1 6 9 IN2 GND 7 8 V– ON Logic “0” 0.8 V Logic “1” 4 V Top View DG303A Dual-In-Line NC 1 14 V+ S3 2 13 S4 Logic SW1, SW2 SW3, SW4 D3 3 12 D4 0 OFF ON D1 4 11 D2 1 ON OFF S1 5 10 S2 IN1 6 9 IN2 GND 7 8 V– Truth Table Logic “0” 0.8 V Logic “1” 4 V Top View 2 Siliconix S-52880—Rev. C, 28-Apr-97 DG300A/301A/302A/303A Ordering Information Temp Range Package Part Number DG300A 0 to 70_C –25 to 85_C 14-Pin Plastic DIP DG300ACJ 14-Pin CerDIP DG300ABK 10-Pin Metal Can DG300ABA DG300AAK 14-Pin CerDIP DG300AAK/883 JM38510/11601BCA –55 to 125_C 14-Pin Sidebraze JM38510/11601BCC DG300AAA/883 10-Pin Metal Can JM38510/11601BIA DG301A 0 to 70_C –25 to 85_C 14-Pin Plastic DIP DG301ACJ 14-Pin CerDIP DG301ABK 10-Pin Metal Can DG301ABA DG301AAK/883 14-Pin CerDIP 14-Pin Sidebraze –55 to 125_C JM38510/11602BCA JM38510/11602BCC DG301AAA 10-Pin Metal Can DG301AAA/883 JM38510/11602BIA DG302A 0 to 70_C 14-Pin Plastic DIP DG302ACJ DG302AAK 14-Pin CerDIP –55 to 125_C DG302AAK/883 JM38510/11603BCA 14-Pin Sidebraze JM38510/11603BCC 0 to 70_C 14-Pin Plastic DIP DG303ACJ –25 to 85_C 14-Pin CerDIP DG303ABK –45 to 85_C 14-SOIC DG303ADY DG303A DG303AAK 14-Pin CerDIP –55 to 125_C JM38510/11604BCA 14-Pin Sidebraze Siliconix S-52880—Rev. C, 28-Apr-97 DG303AAK/883 JM38510/11604BCC 3 DG300A/301A/302A/303A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Continuous Current, S or D (Pulsed at 1 ms, 10% duty cycle max) . . . . . . . . . . . . . . . . . . . . 100 mA Storage Temperature (A & B Suffix) . . . . . . . . . . . . –65 to 150_C (C Suffix) . . . . . . . . . . . . . . . . –65 to 125_C Power Dissipationb 14-Pin Plastic DIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470 mW 14-Pin CerDIPd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825 mW 10-Pin Metal Cane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 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 11 mW/_C above 75_C e. Derate 6 mW/_C above 75_C Schematic Diagram (Typical Channel) V+ S V– VIN Level Shift/ Drive V+ GND D V– Figure 1. 4 Siliconix S-52880—Rev. C, 28-Apr-97 DG300A/301A/302A/303A Specificationsa Conditions Unless Otherwise Specified Parameter Symbol V = 15 V, V V– V = –15 15 V V+ VIN = 0.8 V or VIN = 4 Vf A Suffix B/C Suffix –55 to 125_C Tempb Typc Mind Maxd Mind Maxd Unit Analog Switch Analog Signal Rangee VANALOG Full –15 15 –15 V 50 75 W Room Full 30 Room Hot 0.1 –1 –100 1 100 –5 –100 5 100 Room Hot 0.1 –1 –100 1 100 –5 –100 5 100 VD = VS = 14 V Room Hot 0.1 –1 –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 tOPEN DG301A/303A Only Figure 3 Room 50 Q CL = 1 nF, Rgen = 0 W Vgen = 0 V, Figure 4 Room 8 Room 14 Room 14 Drain-Source On-Resistance rDS(on) Source Off Leakage Current IS(off) Drain Off Leakage Current ID(off) Drain On Leakage Current ID(on) VD = 10 V, IS = –10 mA VS = 14 V V, VD = 14 V 50 75 15 nA Digital Control Input p Current with I Input V Voltage l Hi High h 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 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 2 VS, VD = 0 V, f = 1 MHz f = 1 MHz Room 40 VIN = 0 V Room 6 VIN = 15 V Room 7 Room 62 Room 74 Room Full 0.23 Room Full –0.001 Room Full 0.001 Room Full –0.001 VIN = 0 V,, RL = 1 kW VS = 1 Vrms, f = 500 kHz kH ns pC pF dB Power Supplies Positive Supply Current I+ Negative Supply Current I– Positive Supply Current I+ VIN = 4 V (One ( Input) p ) All Others Oh =0V 0 8 V (All Inputs) VIN = 0.8 Negative Supply Current I– 0.5 1 –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. Siliconix S-52880—Rev. C, 28-Apr-97 5 DG300A/301A/302A/303A Typical Characteristics 70 5 V 8 V 50 10 V 12 V 30 15 V 20 V 10 rDS(on) – Drain-Source On-Resistance ( ) DS(on) – Drain-Source On-Resistance ( ) TA = 25C –25 –15 –5 5 15 50 40 TA = 125_C 30 TA = 25_C 20 TA = –55_C –15 –10 –5 0 5 10 15 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 = 25C 100 7.5 V V– = –15 V TA = 25_C VINH = 4 V VINL = 0 V 400 80 10 V 60 300 tOFF 200 tON 15 V 40 20 V tOPEN 100 DG301/303 Only 0 0 5 10 15 20 0 40 10 V+ – Positive Supply (V) Charge Injection vs. Analog Voltage Input Switching Threshold vs. Positive Supply Voltage 5 4 VT (V) 3 20 2 10 1 –10 15 V– = –15 V TA = 25_C V+ = 15 V V– = –15 V CL = 1 nF 30 0 –15 5 VD – Drain Voltage (V) 50 Q (pC) V+ = 15 V V– = –15 V VD – Drain Voltage (V) 20 –5 0 5 VS – Source Voltage (V) 6 rDS(on) vs. VD and Temperature 60 10 25 t ON , t OFF (ns) rDS(on) – Drain-Source On-Resistance ( ) rDS(on) vs. VD and Power Supply 90 10 15 0 5 10 15 V+ – Positive Supply (V) Siliconix S-52880—Rev. C, 28-Apr-97 DG300A/301A/302A/303A Typical Characteristics (Cont’d) Supply Current vs. Temperature –120 500 400 –100 300 Crosstalk I+ –80 (dB) I+, I– (mA) Off Isolation and Crosstalk vs. Frequency V+ = 15 V V– = –15 V VIN = 4 V (One Input) (All Other = 0 V) 200 100 Off Isolation –60 I– –40 105 125 –20 10 k 0 –100 –55 –35 –15 5 25 45 65 85 V+ = +15 V V– = –15 V RL= 50 W 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 IS , I D I+, I– (mA) 10 ID(on) 1 nA 5 100 pA +I ID(off) or IS(off) –I 0 1k 10 k 100 k 10 pA –55 –35 1M –15 f – Frequency (Hz) 65 85 105 125 400 V+ = 15 V V– = –15 V 350 300 300 250 250 Time (ns) Time (ns) 45 Switching Time vs. Temperature Switching Time vs. Power Supply Voltage 200 tON 150 tOFF 50 50 14 16 18 Supply Voltage (V) Siliconix S-52880—Rev. C, 28-Apr-97 20 tON 150 100 12 V+ = 15 V V– = –15 V VS = 3 V 200 100 0 10 25 Temperature (_C) 400 350 5 22 0 –55 –35 –15 tOFF 5 25 45 65 85 105 125 Temperature (_C) 7 DG300A/301A/302A/303A Test Circuits +15 V Logic “1” = Switch On V+ VS = 3 V Logic Input D S VO 50% 0V IN GND 5V RL 300 W V– 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 Logic “1” = Switch On Logic Input S1 D1 S2 D2 VO1 VO2 IN GND V– Switch Output RL1 CL1 300 W 33 pF RL2 CL2 300 W 33 pF VINH 50% 0V VS1 0V VS2 50% VO1 VO2 Switch Output 0 V 50% tBBM –15 V CL (includes fixture and stray capacitance) Figure 3. Break-Before-Make SPDT (DG301A, DG303A) +15 V Rg V+ S IN Vg VO CL 1 nF 3V GND DVO D V– VO INX ON OFF ON –15 V Figure 4. Charge Injection 8 Siliconix S-52880—Rev. C, 28-Apr-97 DG300A/301A/302A/303A Application Hintsa 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 DG300A 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 kW 10 kW +15 V 5 kW VOUT 10 mF +15 V DG301A 100 kW +5 V 5 kW TTL Input 10 kW Figure 5. Single Supply Op Amp Switching Siliconix S-52880—Rev. C, 28-Apr-97 9 DG300A/301A/302A/303A Applications (Cont’d) +15 V CMOS Logic Input Select High = Diff. IN B +15 V –15 V Diff. IN A –15 V + – +15 V R4 75 k R2 R6 75 k 75 k Diff. IN B R1 16 k DG302A Ri1 1.5 k VOUT DG301A 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 –15 V (In the circuit shown, AV1 = 10.4, AV2 = 101) Figure 6. Low Power Instrumentation Amplifier with Digitally Selectable Inputs and Gain 10 Siliconix S-52880—Rev. C, 28-Apr-97