ADG784 Datasheet PDF – Quad 2:1 Mux in Chip Scale

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Part Number: ADG784

Function: CMOS 3V/5 V, Wide Bandwidth Quad 2:1 Mux in Chip Scale

Package: 20LFCSP ( 20-Lead Lead Frame Chip )

Manufacturer: Analog Devices

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ADG784 datasheet pdf

Description

The ADG784 is a monolithic CMOS device comprising four 2:1 multiplexer/demultiplexers with high impedance outputs. The CMOS process provides low power dissipation yet gives high switching speed and low on resistance. The on-resistance variation is typically less than 0.5 Ω with an input signal ranging from 0 V to 5 V.

Designed for precision signal routing, it offers low on-resistance, high bandwidth, and minimal distortion, making it suitable for both analog and mixed-signal applications. Its rail-to-rail capability and low power consumption enable efficient operation in portable and high-speed systems.

Features

  • Quad 2:1 multiplexer/demultiplexer configuration
  • Low on-resistance: 4 Ω (typical)
  • Excellent on-resistance matching: ΔRON < 0.5 Ω
  • Flat on-resistance over signal range: < 2 Ω
  • Wide bandwidth: > 200 MHz
  • Rail-to-rail signal handling
  • Single supply operation: 3 V or 5 V
  • Very low distortion: < 1%
  • Ultra-low quiescent current: ~100 nA
  • High off-isolation and low crosstalk

Pinouts

ADG784 pinout

Design Notes

  • Low RON and flatness ensure minimal signal attenuation and distortion, critical for precision analog paths
  • High bandwidth (>200 MHz) allows use in RF and fast data acquisition switching
  • Rail-to-rail operation enables full dynamic range utilization in low-voltage systems
  • Control logic is CMOS-compatible, simplifying MCU/FPGA interfacing
  • Charge injection and feedthrough should be considered in high-precision sampling circuits
  • Layout should minimize parasitic capacitance for high-frequency applications

How to Choose This Device

  • Use when low distortion and high bandwidth are required simultaneously
  • Ideal for multi-channel signal routing with minimal power consumption
  • Prefer over higher RON switches in precision analog applications
  • Evaluate channel-to-channel matching for differential signal paths
  • Ensure logic-level compatibility with control circuitry

Typical Applications

  • Audio and video signal routing
  • Data acquisition systems (DAQ)
  • Multiplexing in ADC front-end circuits
  • Battery-powered instrumentation
  • Communication systems (RF switching)
  • Automatic test equipment (ATE)

Alternative / Equivalent Products

  • ADG704 – Low voltage CMOS analog multiplexer (4:1)
  • ADG774 – Similar quad SPDT switch with low RON
  • MAX4619 – Maxim quad analog switch
  • DG419 – Vishay precision analog switch
  • TS5A3359 – TI analog switch (low power)

Other data sheets are available within the file:

ADG784BCPZ, ADG784BCPZ-REEL, ADG784BCPZ-REEL7

 

ADG784 Datasheet PDF Download


ADG784 pdf