a FEATURES 44 V Supply Maximum Ratings ⴞ15 V Analog Signal Range Low On Resistance (<24 ⍀) Ultralow Power Dissipation (3.9 W) Low Leakage (<0.25 nA) Fast Switching Times tON <165 ns tOFF <130 ns Break-Before-Make Switching Action TTL/CMOS Compatible Plug-in Replacement for DG411/DG412/DG413 LC2MOS Precision Quad SPST Switches ADG431/ADG432/ADG433 FUNCTIONAL BLOCK DIAGRAMS S1 IN1 S1 IN1 D1 S2 IN2 D1 S2 IN2 ADG431 D2 S3 IN3 ADG432 IN3 D3 S4 IN4 D3 S4 IN4 D4 APPLICATIONS Audio and Video Switching Automatic Test Equipment Precision Data Acquisition Battery Powered Systems Sample Hold Systems Communication Systems D2 S3 D4 S1 IN1 D1 S2 IN2 ADG433 D2 S3 IN3 D3 S4 IN4 D4 GENERAL DESCRIPTION The ADG431, ADG432 and ADG433 are monolithic CMOS devices comprising four independently selectable switches. They are designed on an enhanced LC2MOS process which provides low power dissipation yet gives high switching speed and low on resistance. The on resistance profile is very flat over the full analog input range ensuring excellent linearity and low distortion when switching audio signals. Fast switching speed coupled with high signal bandwidth also make the parts suitable for video signal switching. CMOS construction ensures ultralow power dissipation making the parts ideally suited for portable and battery powered instruments. The ADG431, ADG432 and ADG433 contain four independent SPST switches. The ADG431 and ADG432 differ only in that the digital control logic is inverted. The ADG431 switches are turned on with a logic low on the appropriate control input, while a logic high is required for the ADG432. The ADG433 has two switches with digital control logic similar to that of the ADG431 while the logic is inverted on the other two switches. Each switch conducts equally well in both directions when ON and has an input signal range which extends to the supplies. In the OFF condition, signal levels up to the supplies are blocked. All switches exhibit break before make switching action for use in multiplexer applications. Inherent in the design is low charge injection for minimum transients when switching the digital inputs. SWITCHES SHOWN FOR A LOGIC "1" INPUT PRODUCT HIGHLIGHTS 1. Extended Signal Range The ADG431, ADG432 and ADG433 are fabricated on an enhanced LC2MOS process giving an increased signal range which extends fully to the supply rails. 2. Ultralow Power Dissipation 3. Low RON 4. Break-Before-Make Switching This prevents channel shorting when the switches are configured as a multiplexer. 5. Single Supply Operation For applications where the analog signal is unipolar, the ADG431, ADG432 and ADG433 can be operated from a single rail power supply. The parts are fully specified with a single +12 V power supply and will remain functional with single supplies as low as +5 V. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1998 ADG431/ADG432/ADG433–SPECIFICATIONS1 Dual Supply (V DD = +15 V ⴞ 10%, VSS = –15 V ⴞ 10%, V L = +5 V ⴞ 10%, GND = O V, unless otherwise noted) Parameter ANALOG SWITCH Analog Signal Range RON RON vs. VD (VS) RON Drift RON Match LEAKAGE CURRENTS Source OFF Leakage IS (OFF) Drain OFF Leakage ID (OFF) Channel ON Leakage ID, IS (ON) DIGITAL INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current IINL or I INH CIN Digital Input Capacitance DYNAMIC CHARACTERISTICS2 tON B Versions –40ⴗC to +25ⴗC +85ⴗC T Versions –55ⴗC to +25ⴗC +125ⴗC VDD to VSS 17 24 15 0.5 5 ± 0.05 ± 0.25 ± 0.05 ± 0.25 ± 0.1 ± 0.35 26 ±2 ±2 ±3 VDD to VSS 17 24 15 0.5 5 ± 0.05 ± 0.25 ± 0.05 ± 0.25 ± 0.1 ± 0.35 2.4 0.8 0.005 ± 0.02 0.005 9 9 90 90 27 Units V Ω typ VD = ± 8.5 V, IS = –10 mA; Ω max VDD = +13.5 V, VSS = –13.5 V % typ %/°C typ % typ VD = 0 V, IS = –10 mA ± 17 nA typ nA max nA typ nA max nA typ nA max 2.4 0.8 V min V max ± 0.02 µA typ µA max pF typ ± 15 ± 15 Break-Before-Make Time Delay, tD 25 (ADG433 Only) 25 ns typ ns max ns typ ns max ns typ Charge Injection 5 5 pC typ OFF Isolation 68 68 dB typ Channel-to-Channel Crosstalk 85 85 dB typ CS (OFF) CD (OFF) CD, CS (ON) 9 9 35 9 9 35 pF typ pF typ pF typ 165 tOFF 60 175 60 130 145 POWER REQUIREMENTS IDD ISS IL Power Dissipation 0.0001 0.1 0.2 0.0001 0.1 0.2 0.0001 0.1 0.2 7.7 0.0001 0.1 0.2 0.0001 0.1 0.2 0.0001 0.1 0.2 7.7 Test Conditions/Comments µA typ µA max µA typ µA max µA typ µA max µW max VDD = +16.5 V, VSS = –16.5 V VD = ± 15.5 V, VS = ⫿15.5 V; Test Circuit 2 VD = ± 15.5 V, VS = ⫿15.5 V; Test Circuit 2 VD = VS = ± 15.5 V; Test Circuit 3 VIN = VINL or VINH VDD = +15 V, VSS = –15 V RL = 300 Ω, C L = 35 pF; VS = ± 10 V; Test Circuit 4 RL = 300 Ω, C L = 35 pF; VS = ± 10 V; Test Circuit 4 RL = 300 Ω, CL = 35 pF; VS1 = VS2 = +10 V; Test Circuit 5 VS = 0 V, RS = 0 Ω, CL = 10 nF; Test Circuit 6 RL = 50 Ω, CL = 5 pF, f = 1 MHz; Test Circuit 7 RL = 50 Ω, CL = 5 pF, f = 1 MHz; Test Circuit 8 f = 1 MHz f = 1 MHz f = 1 MHz VDD = +16.5 V, VSS = –16.5 V Digital Inputs = 0 V or 5 V NOTES 1 Temperature ranges are as follows: B Versions: –40 °C to +85°C; T Versions: –55°C to +125°C. 2 Guaranteed by design, not subject to production test. Specifications subject to change without notice. –2– REV. B ADG431/ADG432/ADG433 Single Supply (V DD = +12 V ⴞ 10%, VSS = O V, VL = +5 V ⴞ 10%, GND = O V, unless otherwise noted) B Versions –40ⴗC to +25ⴗC +85ⴗC Parameter ANALOG SWITCH Analog Signal Range RON T Versions –55ⴗC to +25ⴗC +125ⴗC 0 V to VDD 28 42 20 0.5 5 RON vs. VD (VS) RON Drift RON Match LEAKAGE CURRENTS Source OFF Leakage IS (OFF) Drain OFF Leakage ID (OFF) Channel ON Leakage ID, Is (ON) DIGITAL INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current IINL or IINH ± 0.04 ± 0.25 ± 0.04 ± 0.25 ± 0.01 ± 0.3 45 ±2 ±2 ±3 0 V to VDD 28 42 20 0.5 5 ± 0.04 ± 0.25 ± 0.04 ± 0.25 ± 0.01 ± 0.3 2.4 0.8 0.005 CIN Digital Input Capacitance ± 0.01 0.005 9 9 165 165 45 Units V Ω typ 0 < VD < 8.5 V, IS = –10 mA; Ω max VDD = +10.8 V % typ %/°C typ % typ VD = 0 V, IS = –10 mA ± 17 nA typ nA max nA typ nA max nA typ nA max 2.4 0.8 V min V max ± 0.01 µA typ µA max pF typ ± 15 ± 15 2 DYNAMIC CHARACTERISTICS tON Break-Before-Make Time Delay, tD 25 (ADG433 Only) 25 ns typ ns max ns typ ns max ns typ Charge Injection 25 25 pC typ OFF Isolation 68 68 dB typ Channel-to-Channel Crosstalk 85 85 dB typ CS (OFF) CD (OFF) CD, CS (ON) 9 9 35 9 9 35 pF typ pF typ pF typ 240 60 tOFF 240 60 115 115 POWER REQUIREMENTS 0.0001 0.03 0.1 0.0001 0.03 0.1 1.9 IDD IL Power Dissipation 0.0001 0.03 0.1 0.0001 0.03 0.1 1.9 Test Conditions/Comments µA typ µA max µA typ µA max µW max VDD = +13.2 V VD = 12.2/1 V, VS = 1/12.2 V; Test Circuit 2 VD = 12.2/1 V, VS = 1/12.2 V; Test Circuit 2 VD = VS = +12.2 V/+1 V; Test Circuit 3 VIN = VINL or VINH VDD = +12 V, VSS = 0 V RL = 300 Ω, CL = 35 pF; VS = +8 V; Test Circuit 4 RL = 300 Ω, C L = 35 pF; VS = +8 V; Test Circuit 4 RL = 300 Ω, C L = 35 pF; VS1 = VS2 = +10 V; Test Circuit 5 VS = 0 V, RS = 0 Ω, CL = 10 nF; Test Circuit 6 RL = 50 Ω, CL = 5 pF, f = 1 MHz; Test Circuit 7 RL = 50 Ω, CL = 5 pF, f = 1 MHz; Test Circuit 8 f = 1 MHz f = 1 MHz f = 1 MHz VDD = +13.2 V Digital Inputs = 0 V or 5 V VL = +5.25 V NOTES 1Temperature ranges are as follows: B Versions: –40 °C to +85°C; T Versions: –55°C to +125°C. 2Guaranteed by design, not subject to production test. Specifications subject to change without notice. Truth Table (ADG431/ADG432) Truth Table (ADG433) ADG431 In ADG432 In Switch Condition Logic Switch 1, 4 Switch 2, 3 0 1 1 0 ON OFF 0 1 OFF ON ON OFF REV. B –3– ADG431/ADG432/ADG433 ABSOLUTE MAXIMUM RATINGS (TA = +25°C unless otherwise noted) VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +44 V VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +25 V VSS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –25 V VL to GND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V Analog, Digital Inputs2 . . . . . . . . . . VSS – 2 V to VDD + 2 V or 30 mA, Whichever Occurs First Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . . 30 mA Peak Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA (Pulsed at 1 ms, 10% Duty Cycle max) Operating Temperature Range Industrial (B Version) . . . . . . . . . . . . . . . . . –40°C to +85°C Extended (T Version) . . . . . . . . . . . . . . . . –55°C to +125°C Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Cerdip Package, Power Dissipation . . . . . . . . . . . . . . . 900 mW θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 76°C/W Lead Temperature, Soldering (10 sec) . . . . . . . . . . . +300°C Plastic Package, Power Dissipation . . . . . . . . . . . . . . . 470 mW θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . 117°C/W Lead Temperature, Soldering (10 sec) . . . . . . . . . . . +260°C SOIC Package, Power Dissipation . . . . . . . . . . . . . . . . 600 mW θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 77°C/W Lead Temperature, Soldering Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215°C Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C NOTES 1 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Only one absolute maximum rating may be applied at any one time. 2 Overvoltages at IN, S or D will be clamped by internal diodes. Current should be limited to the maximum ratings given. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADG431/ADG432/ADG433 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. D1 2 S1 3 ADG431 ADG432 ADG433 16 IN2 15 D2 14 S2 VDD TOP VIEW GND 5 (Not to Scale) 12 VL VSS 4 13 S4 6 11 S3 D4 7 10 D3 IN4 8 9 IN3 ESD SENSITIVE DEVICE ORDERING GUIDE PIN CONFIGURATION (DIP/SOIC) IN1 1 WARNING! Model1 Temperature Range Package Options2 ADG431BN ADG431BR ADG431TQ ADG431ABR ADG432BN ADG432BR ADG432TQ ADG432ABR ADG433BN ADG433BR ADG433ABR –40°C to +85°C –40°C to +85°C –55°C to +125°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –55°C to +125°C –40°C to +85°C –40°C to +85°C –40°C to +85°C –40°C to +85°C N-16 R-16A Q-16 R-16A3 N-16 R-16A Q-16 R-16A3 N-16 R-16A R-16A3 NOTES 1 To order MIL-STD-883, Class B processed parts, add /883B to T grade part numbers. 2 N = Plastic DIP; R = 0.15" Small Outline IC (SOIC); Q = Cerdip. 3 Trench isolated, latch-up proof parts. See Trench Isolation section. TERMINOLOGY VDD Most positive power supply potential. Most negative power supply potential in dual supplies. In single supply applications, it may be connected to GND. Logic power supply (+5 V). VL GND Ground (0 V) reference. S Source terminal. May be an input or output. D Drain terminal. May be an input or output. IN Logic control input. Ohmic resistance between D and S. RON RON vs. VD (VS) The variation in RON due to a change in the analog input voltage with a constant load current. Change in RON vs. temperature. RON Drift Difference between the R ON of any two switches. RON Match Source leakage current with the switch “OFF.” IS (OFF) Drain leakage current with the switch “OFF.” ID (OFF) Channel leakage current with the switch “ON.” ID , IS (ON) VD (V S) Analog voltage on terminals D, S. VSS CS (OFF) CD (OFF) CD , CS (ON) CIN tON tOFF tD Crosstalk Off Isolation Charge Injection –4– “OFF” switch source capacitance. “OFF” switch drain capacitance. “ON” switch capacitance. Input Capacitance to ground of a digital input. Delay between applying the digital control input and the output switching on. Delay between applying the digital control input and the output switching off. “OFF” time or “ON” time measured between the 90% points of both switches, when switching from one address state to another. A measure of unwanted signal which is coupled through from one channel to another as a result of parasitic capacitance. A measure of unwanted signal coupling through an “OFF” switch. A measure of the glitch impulse transferred from the digital input to the analog output during switching. REV. B ADG431/ADG432/ADG433 Typical Performance Graphs 50 50 TA = +258C VL = +5V TA = +258C VL = +5V 40 40 VDD = +5V VSS = 0V 30 VDD = +10V VSS = –10V RON – V RON – V VDD = +5V VSS = –5V VDD = +12V VSS = –12V 20 10 30 VDD = +10V VSS = 0V VDD = +12V VSS = 0V 20 10 VDD = +15V VSS = 0V VDD = +15V VSS = –15V 0 –20 0 –10 0 10 VD OR VS – DRAIN OR SOURCE VOLTAGE – V 20 0 Figure 1. On Resistance as a Function of VD (VS) Dual Supplies 5 10 15 VD OR VS – DRAIN OR SOURCE VOLTAGE – V 20 Figure 4. On Resistance as a Function of VD (VS ) Single Supply 100mA 50 VDD = +15V VSS = –15V VL = +5V 40 10mA VDD = +15V VSS = –15V VL = +5V 4 SW 1 SW I+, I– ISUPPLY RON – V 1mA 30 +1258C 100mA 20 10mA +858C IL +258C 10 1mA 0 –20 –10 0 10 VD OR VS – DRAIN OR SOURCE VOLTAGE – V 100nA 10 20 Figure 2. On Resistance as a Function of VD (VS) for Different Temperatures 0.04 LEAKAGE CURRENT – nA LEAKAGE CURRENT – nA VDD = +15V VSS = –15V VL = +5V VS = 615V VD = 615V IS (OFF) 0.1 ID (OFF) 0.01 ID (ON) 40 60 80 100 TEMPERATURE – 8C 120 140 Figure 3. Leakage Currents as a Function of Temperature REV. B 0.02 1M 10M VDD = +15V VSS = –15V TA = +258C VL = +5V ID (ON) IS (OFF) 0.00 ID (OFF) –0.02 –0.04 –20 0.001 20 1k 10k 100k FREQUENCY – Hz Figure 5. Supply Current vs. Input Switching Frequency 10 1 100 0 10 –10 VD OR VS – DRAIN OR SOURCE VOLTAGE – V 20 Figure 6. Leakage Currents as a Function of V D (V S) –5– ADG431/ADG432/ADG433 120 T R E N C H 100 OFF ISOLATION – dB VG VS VDD = +15V VSS = –15V VL = +5V P+ VD P-CHANNEL P+ N– 80 VG VS T R E N C H N-CHANNEL N+ VD N+ P– T R E N C H BURIED OXIDE LAYER SUBSTRATE (BACKGATE) 60 Figure 9. Trench Isolation APPLICATION 40 100 1k 10k 100k FREQUENCY – Hz 1M 10M Figure 7. Off Isolation vs. Frequency 110 CROSSTALK – dB Due to switch and capacitor leakage, the voltage on the hold capacitor will decrease with time. The ADG431/ADG432/ ADG433 minimizes this droop due to its low leakage specifications. The droop rate is further minimized by the use of a polystyrene hold capacitor. The droop rate for the circuit shown is typically 30 µV/µs. VDD = +15V VSS = –15V VL = +5V 100 90 80 70 60 100 1k 10k 100k FREQUENCY – Hz 1M Figure 10 illustrates a precise, fast sample-and-hold circuit. An AD845 is used as the input buffer while the output operational amplifier is an AD711. During the track mode, SW1 is closed and the output VOUT follows the input signal VIN. In the hold mode, SW1 is opened and the signal is held by the hold capacitor CH. 10M Figure 8. Crosstalk vs. Frequency A second switch SW2, which operates in parallel with SW1, is included in this circuit to reduce pedestal error. Since both switches will be at the same potential, they will have a differential effect on the op amp AD711 which will minimize charge injection effects. Pedestal error is also reduced by the compensation network RC and CC. This compensation network also reduces the hold time glitch while optimizing the acquisition time. Using the illustrated op amps and component values, the pedestal error has a maximum value of 5 mV over the ± 10 V input range. Both the acquisition and settling times are 850 ns. +15V TRENCH ISOLATION +5V 2200pF In the ADG431A, ADG432A and ADG433A, an insulating oxide layer (trench) is placed between the NMOS and PMOS transistors of each CMOS switch. Parasitic junctions, which occur between the transistors in junction isolated switches, are eliminated, the result being a completely latch-up proof switch. +15V SW2 +15V S VIN SW1 AD845 In junction isolation, the N and P wells of the PMOS and NMOS transistors from a diode that is reverse-biased under normal operation. However, during overvoltage conditions, this diode becomes forward biased. A silicon-controlled rectifier (SCR) type circuit is formed by the two transistors causing a significant amplification of the current which, in turn, leads to latch up. With trench isolation, this diode is removed, the result being a latch-up proof switch. D S D –15V RC 75V CC 1000pF CH 2200pF AD711 VOUT –15V ADG431 ADG432 ADG433 –15V Figure 10. Fast, Accurate Sample-and-Hold –6– REV. B ADG431/ADG432/ADG433 Test Circuits IDS V1 S VS S A D Test Circuit 1. On Resistance S A +15V +5V 0.1mF 3V VS VDD VL S D VIN ADG431 VIN ADG432 VOUT RL 300V IN 50% 50% 50% 50% 3V CL 35pF 90% 90% VOUT VSS GND 0.1mF –15V tON tOFF Test Circuit 4. Switching Times +15V +5V 0.1mF 0.1mF 3V VDD VS1 VS2 VIN VL S1 D1 S2 D2 RL2 300V IN1, IN2 VIN GND 50% 0V VOUT1 VOUT2 RL1 300V 50% 90% 90% VOUT1 CL1 35pF 0V CL2 35pF VSS 90% VOUT2 90% 0V tD 0.1mF –15V tD Test Circuit 5. Break-Before-Make Time Delay RS VS +15V +5V VDD VL S D 3V VOUT VIN CL 10nF IN GND VSS VOUT Test Circuit 6. Charge Injection REV. B DVOUT QINJ = CL 3 DVOUT –15V –7– A Test Circuit 3. On Leakage Test Circuit 2. Off Leakage 0.1mF D VD VS VD VS RON = V1/IDS ID (ON) ID (OFF) IS (OFF) D ADG431/ADG432/ADG433 +15V +15V +5V VDD VL S D VOUT RL 50V VS GND VL S D 50V VIN2 VOUT VSS VDD VIN1 VS IN VIN 0.1mF 0.1mF RL 50V D S GND VSS NC 0.1mF –15V 0.1mF –15V Test Circuit 7. Off Isolation CHANNEL TO CHANNEL CROSSTALK = 20 3 LOG VS/VOUT C1826b–0–11/98 0.1mF +5V 0.1mF Test Circuit 8. Channel-to-Channel Crosstalk OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Lead Cerdip (Q-16) 0.005 (0.13) MIN 16-Lead SOIC (R-16A) 0.080 (2.03) MAX 16 0.3937 (10.00) 0.3859 (9.80) 9 0.310 (7.87) 0.220 (5.59) 1 0.1574 (4.00) 0.1497 (3.80) 8 PIN 1 0.060 (1.52) 0.015 (0.38) 0.840 (21.34) MAX 0.200 (5.08) MAX 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36) 0.100 (2.54) BSC 0.150 (3.81) MIN SEATING 0.070 (1.78) PLANE 0.030 (0.76) 16 9 1 8 0.2440 (6.20) 0.2284 (5.80) 0.320 (8.13) 0.290 (7.37) PIN 1 0.0098 (0.25) 0.0040 (0.10) 15° 0° 0.015 (0.38) 0.008 (0.20) 0.0500 SEATING (1.27) PLANE BSC 0.0688 (1.75) 0.0532 (1.35) 0.0192 (0.49) 0.0138 (0.35) 0.0196 (0.50) x 458 0.0099 (0.25) 88 0.0099 (0.25) 08 0.0500 (1.27) 0.0160 (0.41) 0.0075 (0.19) 16-Lead Plastic DIP (Narrow) (N-16) 0.840 (21.34) 0.745 (18.92) 9 1 8 PIN 1 0.060 (1.52) 0.015 (0.38) 0.210 (5.33) MAX 0.160 (4.06) 0.115 (2.93) 0.022 (0.558) 0.014 (0.356) 0.280 (7.11) 0.240 (6.10) 0.130 (3.30) MIN 0.100 (2.54) BSC 0.070 (1.77) SEATING 0.045 (1.15) PLANE 0.325 (8.26) 0.300 (7.62) 0.195 (4.95) 0.115 (2.93) PRINTED IN U.S.A. 16 0.015 (0.381) 0.008 (0.204) –8– REV. B