AD7799BRU-REEL

Overview

The AD7799BRU-REEL is a low power, low noise, complete analog front end for high precision measurement applications. It contains a low noise, 24-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 380 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 features include a low-side power switch, reference detect, programmable digital outputs, and burnout currents.
• Internal clock oscillator provides timing without external components.
• Simultaneous 50 Hz/60 Hz rejection ensures accurate measurements in noisy environments.

Applications

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

Procurement Notes

Verify the exact part number against the manufacturer's official documentation to ensure compatibility with your specific application requirements. Confirm that the ordering suffix matches the desired package and temperature range specifications provided in the datasheet.

Selection Notes

Select this component for applications requiring high precision and low power consumption. Consider the 24-bit resolution and low noise characteristics when designing circuits for sensitive sensor interfaces. Ensure the supply voltage and update rate settings align with the system's performance needs.

Part Context

The AD7799 is part of Analog Devices' family of low power, low noise, complete analog front ends designed for high precision measurement applications. It integrates a 24-bit Σ-Δ ADC with three differential analog inputs and an on-chip instrumentation amplifier, making it suitable for various industrial and scientific instruments.

Replacement Considerations

The AD7798 is a similar device within the same family, offering 16-bit resolution instead of 24-bit. Both devices share the same package and pinout, facilitating potential replacements if lower resolution is acceptable for the application.