|Category||Analog & Mixed-Signal Processing => Switches & Multiplexers => Analog Switches|
|Description||Quad SPST (4NC) Switch (DG441 Replacement)|
|Datasheet||Download ADG441 datasheet
|Cross ref.||Similar parts: DG441|
FEATURES 44 V Supply Maximum Ratings VSS to VDD Analog Signal Range Low On Resistance 70 ) Low RON (9 max) Low RON Match (3 max) Low Power Dissipation Fast Switching Times tON 110 ns tOFF 60 ns Low Leakage Currents 3 nA max) Low Charge Injection (6 pC max) Break-Before-Make Switching Action Latch-Up Proof Plug-In Upgrade for DG202A/ADG202A, DG211/ADG211A Plug in Replacement for DG441/DG442/DG444 APPLICATIONS Audio and Video Switching Automatic Test Equipment Precision Data Acquisition Battery Powered Systems Sample Hold Systems Communication Systems GENERAL DESCRIPTION
Each switch conducts equally well in both directions when ON and has an input signal range that extends to the power 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.
The ADG441, ADG442 and ADG444 are monolithic CMOS devices comprising four independently selectable switches. They are designed on an enhanced LC2MOS process that 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 good linearity and low distortion when switching audio signals. High switching speed also makes 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 ADG441, ADG442 and ADG444 contain four independent SPST switches. Each switch of the ADG441 and ADG444 turns on when a logic low is applied to the appropriate control input. The ADG442 switches are turned on with a logic high on the appropriate control input. The ADG441 and ADG444 switches differ in that the ADG444 requires 5 V logic power supply which is applied to the VL pin. The ADG441 and ADG442 do not have a VL pin, the logic power supply being generated internally by an on-chip voltage generator.
1. Extended Signal Range The ADG441/ADG442/ADG444 are fabricated on an enhanced LC2MOS, trench-isolated process, giving an increased signal range that extends to the supply rails. 2. Low Power Dissipation 3. Low RON 4. Trench Isolation Guards Against Latch Up A dielectric trench separates the P and N channel transistors thereby preventing latch up even under severe overvoltage conditions. 5. Break-Before-Make Switching This prevents channel shorting when the switches are configured as a multiplexer. 6. Single Supply Operation For applications where the analog signal is unipolar, the ADG441/ADG442/ADG444 can be operated from a single rail power supply. The parts are fully specified with a single +12 V power supply.
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Parameter ANALOG SWITCH Analog Signal Range 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 DYNAMIC CHARACTERISTICS2 tON tOFF tOPEN Charge Injection OFF Isolation Channel-to-Channel Crosstalk CS (OFF) CD (OFF) CD, CS (ON) POWER REQUIREMENTS IDD ADG441/ADG442 ADG444 ISS IL (ADG444 Only)
10 mA VDD +13.5 V, VSS 10 mA VDD +16.5 V, VSS 15.5 V; Test Circuit 15.5 V; Test Circuit 15.5 V; Test Circuit 3
= 35 pF; 10 V; Test Circuit = 35 pF; 10 V; Test Circuit = 35 pF; 0 , CL= 1 nF; VDD +15 V, VSS 15 V; Test Circuit = 5 pF; = 1 MHz; Test Circuit = 5 pF; = 1 MHz; Test Circuit MHz = 1 MHz = 1 MHz VDD +16.5 V, VSS 16.5 V Digital Inputs 5 V
NOTES 1 Temperature ranges are as follows: B Versions: +85°C; T Versions: +125°C. 2 Guaranteed by design, not subject to production test. Specifications subject to change without notice.
Parameter ANALOG SWITCH Analog Signal Range RON Match LEAKAGE CURRENT 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 DYNAMIC CHARACTERISTICS2 tON tOFF tOPEN Charge Injection OFF Isolation Channel-to-Channel Crosstalk CS (OFF) CD (OFF) CD, CS (ON) POWER REQUIREMENTS IDD IL (ADG444 Only)= 10 mA; VDD 10 mA VDD V/12.2 V; Test Circuit V/12.2 V; Test Circuit V/1 V; Test Circuit 3
= 35 pF; +8 V; Test Circuit = 35 pF; +8 V; Test Circuit = 35 pF; = 1 nF; VDD +12 V, VSS 0 V; Test Circuit = 5 pF, = 1 MHz; Test Circuit = 5 pF, = 1 MHz; Test Circuit MHz = 1 MHz = 1 MHz VDD +13.2 V Digital Inputs 5 V
NOTES 1 Temperature ranges are as follows: B Versions: +85°C; T Versions: to +125 °C. 2 Guaranteed by design, not subject to production test. Specifications subject to change without notice.
To order MIL-STD-883, Class B processed parts, add to T grade part numbers. N = Plastic DIP, = 0.15" Small Outline IC (SOIC), Q = Cerdip.
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