ADG1634BRUZ Monolithic CMOS ICMOS Analog Switch Integrated Circuit
Specifications
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Introduction
ADG1634BRUZ - Quad-Channel SPDT Analog Switch IC
The ADG1634BRUZ is a quad-channel, single-pole double-throw (SPDT) analog switch from Analog Devices, designed for high-performance signal routing in various electronic systems.
Core Functionality & Working Principle
The ADG1634BRUZ operates as a low-resistance, high-speed analog switch with these key characteristics:
- SPDT Configuration: Each of four independent switches can connect one input to either of two outputs (NO/NC)
- Low On-Resistance (4.5 Ω typical): Minimizes signal attenuation and distortion
- Break-Before-Make Switching: Prevents short-circuiting during transitions
- Wide Voltage Range: Supports ±3.3V to ±8V (dual supply) and 3.3V to 16V (single supply)
- Low Power Consumption (300 µA): Ideal for battery-powered devices
Application-Specific Operational Principles
Data Acquisition Systems
Routes multiple sensor signals to a single ADC (Analog-to-Digital Converter):
- Low RON (4.5 Ω) ensures minimal voltage drop
- High bandwidth (103 MHz) allows fast signal switching
- Break-before-make prevents transient errors
Medical Instrumentation (ECG, Ultrasound)
Used for signal multiplexing in multi-channel diagnostic equipment:
- Low leakage current (<100pA) prevents signal corruption
- Rail-to-rail operation ensures full signal swing
Audio/Video Signal Routing
Enables signal selection in AV switches and mixers:
- Low distortion (THD < 0.01%) maintains signal fidelity
- Fast switching (tON = 61ns, tOFF = 162ns)
Automated Test Equipment (ATE)
Used for dynamic load switching and multi-channel test signal routing:
- High ESD protection (>4kV HBM) ensures durability
- Wide temperature range (-40°C to +125°C)
Battery-Powered & Portable Devices
Manages power-saving mode switching in IoT and wearables:
- Ultra-low power consumption (300 µA) extends battery life
- Small TSSOP-20 package (6.6 ×4.5mm) saves PCB space
Advantages Over Competing Solutions
| Feature | ADG1634BRUZ | Standard CMOS Switches |
|---|---|---|
| On-Resistance (RON) | 4.5 Ω | 10-50Ω |
| Bandwidth | 103 MHz | <50 MHz |
| Power Consumption | 300 µA | >1mA |
| Switching Speed | 61ns (ON), 162ns (OFF) | >200ns |
| ESD Protection | >4kV HBM | 2kV HBM |
Additional Applications
- Data Acquisition Systems: Switches analog signals to ADCs with low resistance and distortion
- Gain Switching in Amplifier Circuits: Switches gain resistors while maintaining accuracy
- Audio Signal Routing: Routes audio signals with low distortion and noise
- Video Signal Routing: Handles SD/HD video signal switching
- Communication Equipment: Used in base stations and RF front-ends for signal switching
- Automatic Test Equipment: Enables multi-channel test signal routing
- Instrumentation and Measurement: Used in oscilloscopes, multimeters for signal switching
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