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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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
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
