AD7732BRUZ-REEL

Overview

The AD7732BRUZ-REEL is a high precision, high throughput analog front end featuring a 24-bit sigma-delta ADC with two fully differential analog inputs. It supports input ranges of +5 V, ±5 V, +10 V, and ±10 V while operating from a single +5 V analog supply. The device offers configurable data throughput up to 15.4 kHz via a simple digital interface. Key specifications include 24 bits no missing codes, integral nonlinearity of ±0.0015% FSR, and overvoltage tolerance up to ±16.5 V without degrading adjacent channel performance. It operates within an extended industrial temperature range of –40°C to +105°C.

Feature Summary

• Features two fully differential analog input channels with selectable unipolar or true bipolar input ranges.
• Includes on-chip per-channel system calibration options and overrange/underrange detection capabilities.
• Supports a 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP protocols.
• Provides 'No-Reference' detect capability for the differential reference input.

Applications

• PLCs/DCS
• Multiplexing applications
• Process control
• Industrial instrumentation

Procurement Notes

Verify that the ordering suffix REEL indicates tape-and-reel packaging rather than tube packaging. Confirm the specific revision level matches the design requirements. Ensure the component source is authorized to guarantee authenticity. Check RoHS compliance status against current regulatory standards. Validate pinout compatibility with the target PCB footprint before integration.

Selection Notes

Select this component when dual differential inputs with high common-mode rejection are required. Consider the AD7734 if four single-ended channels are needed instead. Evaluate the AD7738 for applications requiring configurable multiplexer outputs or lower input voltage ranges. Verify that the 5 V analog supply constraint fits the system power architecture. Ensure the serial interface timing meets the microcontroller or DSP clock requirements.

Part Context

The AD7732 belongs to the Analog Devices AD773x family of high-resolution analog-to-digital converters. It shares architectural similarities with the AD7734 and AD7738 but differs in its analog front-end configuration. While the AD7734 provides four single-ended inputs, the AD7732 focuses on two fully differential channels optimized for high throughput and precise multiplexing applications.

Replacement Considerations

Public confirmed substitute part numbers: AD7732BRU, AD7732BRUZ-REEL7.