AD7734BRUZ

Overview

The AD7734BRUZ is a high precision, high throughput analog front end featuring a 24-bit Sigma-Delta ADC with four single-ended input channels. It supports ±10 V, ±5 V, and unipolar ranges while operating from a single +5 V analog supply. The device offers up to 15.4 kHz data throughput and includes per-channel system calibration. It features overvoltage tolerance up to ±16.5 V without affecting adjacent channels and utilizes a 3-wire serial interface compatible with SPI and Microwire standards.

Feature Summary

• High resolution 24-bit conversion with no missing codes
• Optimized for fast channel switching in multiplexing applications
• On-chip per-channel system calibration capability
• Overvoltage tolerant inputs protecting adjacent channels

Applications

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

Procurement Notes

Verify the specific ordering suffix BRUZ corresponds to the TSSOP-28 package and industrial temperature range (-40°C to +105°C). Confirm that the external reference voltage requirements match the application design, as the device requires an external differential reference input.

Selection Notes

Select this component when high throughput and true bipolar ±10 V input ranges are required from a single supply. Consider the AD7738 if eight single-ended or four fully differential channels are needed, or the AD7732 for two fully differential channels. Ensure the master clock frequency supports the desired output data rate and noise performance.

Part Context

The AD7734 belongs to the Analog Devices AD773x family of high-resolution sigma-delta ADCs. It shares architectural similarities with the AD7732 and AD7738 but is distinct in its four single-ended input configuration and ±10 V input range capabilities, designed specifically for high-speed multiplexing tasks.

Replacement Considerations

Public confirmed substitute part numbers: None.