AD7766BRUZ

Overview

The AD7766BRUZ is a high-performance, single-channel, 24-bit oversampled successive approximation (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates with a maximum output data rate of 128 kSPS and consumes 15 mW of power at this speed. The device features an on-chip low-pass FIR filter providing linear phase response and stop-band attenuation of 100 dB. Key electrical specifications include a dynamic range of 109.5 dB, a signal-to-noise ratio of 108.5 dB, and a total harmonic distortion of -112 dB. It utilizes a differential input structure and requires a 2.5 V supply voltage with a reference voltage up to 5 V. The component is housed in a 16-lead TSSOP package.

Feature Summary

• Oversampled SAR architecture combining large dynamic range with wide input bandwidth
• Integrated digital FIR filter for out-of-band noise elimination and linear phase response
• Daisy-chain capability via SDI pin for synchronization of multiple devices
• Low temperature drift characteristics for zero error and gain error

Applications

• Low power PCI/USB data acquisition systems
• Vibration analysis instrumentation
• High precision medical acquisition systems
• Low power wireless acquisition systems

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm the decimation rate and performance tier. Ensure the logic interface voltage requirements match the system design. Confirm RoHS compliance status through official documentation before procurement.

Selection Notes

Select based on required output data rate and corresponding power consumption levels. The standard model supports 128 kSPS, while variants offer lower rates with reduced power dissipation. Verify that the external reference voltage range accommodates the application's input signal scaling needs.

Part Context

This component belongs to the AD7766 family of 24-bit ADCs, which includes variants optimized for different sampling speeds and power profiles. Related devices in the series include the AD7767 and other PulSAR converters offering varying throughput and interface options for industrial applications.

Replacement Considerations

Direct functional substitutes within the same family include the AD7766-1 and AD7766-2, which offer different decimation rates and power consumption profiles while maintaining the same package and interface compatibility.