ADI AD829SQ

Обратная связь по напряжению120 МГц

Overview

The external compensation pin of the AD829SQ gives it exceptional versatility. For example, compensation can be selected to optimize the bandwidth for a given load and power supply voltage. As a gain-of-2 line driver, the −3 dB bandwidth can be increased to 95 MHz at the expense of 1 dB of peaking. Its output can also be clamped at its external compensation pin.The AD829SQ exhibits excellent dc performance. It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, a low input voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV maximum. Common-mode rejection and power supply rejection ratios are both 120 dB.

Operating as a traditional voltage feedback amplifier, the AD829SQ provides many of the advantages that a transimpedance amplifier offer. A bandwidth >50 MHz can be maintained for a range of gains through the replacement of the external compensation capacitor. The AD829SQ and the transimpedance amplifier are both unity-gain stable and provide similar voltage noise performance (1.7 nV/√Hz); however, the current noise of the AD829SQ (1.5 pA/√Hz) is less than 10% of the noise of transimpedance amplifiers. The inputs of the AD829SQ are symmetrical.

Features

Applications

• Premium Audio
• External Audio Amplifiers
• Body Control Modules
• High-Fidelity (HiFi) Headphone Drivers
• Professional Audio Equipment
• Analog and Digital Mixing Consoles
• Audio Test and Measurement
• Telematics control unit
• Emergency call (eCall)
• Aftermarket telematics