AD7766BRUZ-RL7

Overview

The AD7766BRUZ-RL7 is a high-performance, single-channel, 24-bit oversampled successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates with an output data rate of 128 kSPS and consumes 15 mW of power at this maximum speed. The device features a dynamic range of 109.5 dB and a signal-to-noise ratio of 108.5 dB. It utilizes a 2.5 V analog/digital supply with logic interface options ranging from 1.8 V to 3.6 V. Key specifications include a typical integral nonlinearity of ±6 ppm and a gain error drift of 0.4 ppm/°C. The component is housed in a 16-lead TSSOP package.

Feature Summary

• Oversampled SAR architecture combined with an on-chip low-pass FIR filter for high DC accuracy and noise reduction
• Flexible digital interfacing with daisy-chain capability and synchronization support for multiple devices
• Low temperature drift characteristics ensuring stable zero and gain errors across the operating range
• Power-down functionality to minimize energy consumption during idle periods

Applications

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

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the exact model variant matches the required decimation rate, as other variants like AD7766-1 or AD7766-2 offer different sampling speeds. Ensure the external reference voltage meets the specified requirements for optimal performance.

Selection Notes

Select the AD7766BRUZ-RL7 when a fixed 128 kSPS output rate is required. Consider the AD7766-1 or AD7766-2 if lower power consumption or higher dynamic range at reduced speeds is needed. Verify that the system can accommodate the 5 V reference requirement while maintaining 2.5 V core supplies.

Part Context

This component belongs to the AD7766 family of 24-bit ADCs. Related parts include the AD7767 series, which shares similar architectural benefits but may differ in specific power or accuracy metrics. The AD7766 is designed for applications requiring precise measurement of small signal changes over large dynamic ranges.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.