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ADG729BRU

ADG729BRU Description

The ADG729BRU from Analog Devices Inc. is a high-performance, dual 4:1 single-pole, four-throw (SP4T) analog switch/multiplexer designed for precision signal routing in low-voltage applications. Packaged in a 16-pin TSSOP tube, this IC features ultra-low leakage current (100pA max) and low on-resistance (4.5Ω max), ensuring minimal signal distortion and power loss. Operating from 2.7V to 5.5V, it supports a wide range of supply voltages, making it suitable for battery-powered and portable devices. With a -3dB bandwidth of 100MHz and fast switching times (95ns turn-on, 85ns turn-off), the ADG729BRU excels in high-speed signal processing.

ADG729BRU Features

• Low On-Resistance: 4.5Ω max ensures minimal voltage drop and high signal integrity.
• Low Leakage Current: 100pA max reduces power waste and improves accuracy in sensitive circuits.
• Fast Switching: 95ns/85ns (Ton/Toff) enables rapid signal routing for time-critical applications.
• Wide Supply Range: 2.7V–5.5V compatibility supports both 3V and 5V systems.
• Low Charge Injection: 3pC minimizes glitches during switching, critical for precision ADC/DAC interfaces.
• High Bandwidth: 100MHz -3dB ensures reliable performance in high-frequency signal chains.
• Dual 4:1 Configuration: Two independent SP4T switches in one package save board space and cost.

ADG729BRU Applications

• Portable & Battery-Powered Devices: Ideal for low-voltage systems due to its 2.7V–5.5V range and low leakage.
• Test & Measurement Equipment: High bandwidth and fast switching suit automated test systems and data acquisition.
• Audio/Video Signal Routing: Low distortion and charge injection make it perfect for multimedia switching.
• Medical Instrumentation: Precision signal handling benefits ECG, ultrasound, and other sensitive medical devices.
• Industrial Control Systems: Robust performance in harsh environments with minimal signal degradation.

Conclusion of ADG729BRU

The ADG729BRU stands out for its low on-resistance, fast switching, and dual 4:1 configurability, making it a versatile choice for precision analog switching. While marked obsolete, its performance metrics—such as 100MHz bandwidth and 3pC charge injection—remain competitive for legacy designs or niche applications requiring high-speed, low-power signal routing. Engineers should consider this IC for projects demanding low distortion, high accuracy, and compact integration. For newer designs, Analog Devices may recommend alternative models with similar or enhanced specifications.