AD7798BRUZ

Overview

The AD7798BRUZ is a low power, low noise, complete analog front end for high precision measurement applications. It contains a low noise, 16-bit Σ-Δ ADC with three differential analog inputs and an on-chip low noise instrumentation amplifier. The device operates with a power supply from 2.7 V to 5.25 V and consumes 300 µA typical current. It features an internal clock oscillator, simultaneous 50 Hz/60 Hz rejection, reference detect, low-side power switch, programmable digital outputs, and burnout currents. The output data rate is software-programmable from 4.17 Hz to 470 Hz.

Feature Summary

• Integrated low noise, programmable gain instrumentation amplifier allows direct interfacing of small amplitude signals.
• On-chip low-side power switch and reference detect capabilities simplify system design.
• Internal clock oscillator eliminates the need for external timing components.
• Programmable digital output pins and burnout currents provide additional diagnostic and control flexibility.

Applications

• Weigh scales
• Pressure measurement
• Strain gauge transducers
• Gas analysis
• Industrial process control

Procurement Notes

Verify the component against official Analog Devices documentation to confirm authenticity and revision status. Ensure that the operating conditions, including voltage ranges and temperature limits, align with your specific application requirements before finalizing procurement decisions.

Selection Notes

Select this component when a 16-bit resolution is sufficient for the required measurement accuracy. Consider the AD7799 if higher 24-bit resolution is needed, as both devices share similar pinouts and feature sets but differ in ADC bit depth and associated noise performance characteristics.

Part Context

The AD7798BRUZ belongs to the AD7798/AD7799 family of complete analog front ends designed for high precision measurement applications. These devices integrate a sigma-delta ADC with an instrumentation amplifier, offering a compact solution for systems requiring low power consumption and high accuracy in signal conditioning.

Replacement Considerations

The AD7799 serves as a higher-resolution alternative within the same package and feature set. Verify compatibility regarding resolution requirements and noise specifications when considering substitution between these two models.