AD7765BRUZ-REEL7

Overview

The AD7765BRUZ-REEL7 is a 24-bit sigma-delta analog-to-digital converter featuring a maximum output data rate of 156 kSPS and dynamic range specifications of 112 dB at the highest speed and 115 dB at lower rates. It integrates on-chip differential signal buffers and a reference buffer to simplify front-end design. The device supports pin-selectable decimation rates of 128× and 256×, operates with dual power supplies of 2.5 V and 5 V, and includes a full-band low-pass FIR filter for robust anti-aliasing protection.

Feature Summary

• Integrates fully differential modulator inputs with on-chip differential amplifier for signal buffering and level shifting.
• Includes an internal reference buffer to drive external voltage references directly.
• Features a full-band finite impulse response digital filter providing high stop-band attenuation at the Nyquist frequency.
• Supports synchronization of multiple devices via a dedicated SYNC pin and allows daisy-chaining capabilities.

Applications

• Data acquisition systems
• Vibration analysis
• Instrumentation

Procurement Notes

Verify that the ordering suffix REEL7 corresponds to tape-and-reel packaging when sourcing components. Confirm the BRUZ variant indicates the specific TSSOP package and industrial temperature rating. Ensure the source document explicitly links these suffixes to the functional specifications provided in the datasheet before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high-resolution conversion with wide input bandwidth. The integrated buffers reduce external component count compared to discrete solutions. Consider the power supply requirements, as the device utilizes separate 2.5 V and 5 V rails for optimal performance of the modulator and analog sections respectively.

Part Context

This part belongs to the AD776x family of high-performance sigma-delta ADCs from Analog Devices. Related devices include the AD7760, AD7762, AD7763, AD7764, AD7766, and AD7767, which offer varying speeds and interface types. The AD7765 specifically targets serial interface applications requiring up to 156 kSPS throughput.

Replacement Considerations

Potential substitutes within the same family include the AD7763 and AD7764, which also feature serial interfaces. The AD7766 and AD7767 offer lower power consumption but reduced speed. Verify pin compatibility and register mapping before substituting any related device number listed in the manufacturer's documentation.