Datasheet ADG441, ADG442, ADG444 (Analog Devices)

LC2MOS Quad SPST Switches Data Sheet ADG441/ ADG442/ ADG444 FEATURES FUNCTIONAL BLOCK DIAGRAM 44 V supply maximum ratings S1 S1 IN1 IN1 VSS to VDD analog signal range D1 D1 Low on resistance (<70 Ω) S2 S2 Low ΔR IN2 IN2 ON (9 Ω max) ADG441 Low R D2 D2 ON match (3 Ω max) ADG442 S3 S3 ADG444 Low power dissipation IN3 IN3 Fast switching times D3 D3 S4 S4 tON < 110 ns IN4 IN4 tOFF < 60 ns D4 D4 Low leakage currents (3 nA max) SWITCHES SHOWN FOR A LOGIC 1 INPUT
05233-001
Low charge injection (6 pC max)
Figure 1.
Break-before-make switching action Latch-up proof A grade
Each switch conducts equally well in both directions when ON
Plug-in upgrade for DG201A/ADG201A, DG202A/ADG202A,
and has an input signal range that extends to the power
DG211/ADG211A
supplies. In the OFF condition, signal levels up to the supplies
Plug-in replacement for DG441/DG442/DG444
are blocked. All switches exhibit break-before-make switching action for use in multiplexer applications. Inherent in the
APPLICATIONS
design is the low charge injection for minimum transients when
Audio and video switching
switching the digital inputs.
Automatic test equipment PRODUCT HIGHLIGHTS Precision data acquisition Battery-powered systems
1. Extended signal range. The ADG441A/ADG442A/
Sample-and-hold systems
ADG444A are fabricated on an enhanced LC2MOS,
Communication systems
trench-isolated process, giving an increased signal range that extends to the supply rails.
GENERAL DESCRIPTION
2. Low power dissipation. The ADG441, ADG442, and ADG444 are monolithic CMOS 3. Low RON. devices that comprise of four independently selectable switches. 4. Trench isolation guards against latch-up for A grade parts. They are designed on an enhanced LC2MOS process that A dielectric trench separates the P and N channel provides low power dissipation yet gives high switching speed transistors thereby preventing latch-up even under severe and low on resistance. overvoltage conditions. The on resistance profile is very flat over the full analog input 5. Break-before-make switching. This prevents channel range, which ensures good linearity and low distortion when shorting when the switches are configured as a multiplexer. switching audio signals. High switching speed also makes the 6. Single-supply operation. For applications where the analog parts suitable for video signal switching. CMOS construction signal is unipolar, the ADG441/ADG442/ADG444 can be ensures ultralow power dissipation, making the parts ideally operated from a single-rail power supply. The parts are suited for portable and battery-powered instruments. The fully specified with a single 12 V power supply. 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 logic high on the appropriate control input. The ADG441 and ADG444 switches differ in that the ADG444 requires a 5 V logic power supply that is applied to the VL pin. The ADG441 and ADG442 do not have a VL pin, the logic power supply is generated internally by an on-chip voltage generator.
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Document Outline Features Applications General Description Functional Block Diagram Product Highlights Table of Contents Revision History Specifications Dual Supply Single Supply Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Terminology Trench Isolation Outline Dimensions Ordering Guide