AD7788ARM-REEL

Overview

The AD7788ARM-REEL is a low-power, 16-bit Sigma-Delta analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.5 V to 5.25 V and features an internal clock oscillator that eliminates the need for external timing components. The device provides a fixed output data rate of 16.6 Hz, which enables simultaneous rejection of both 50 Hz and 60 Hz power line interference. It incorporates a fully differential analog input, an external reference input, and a VDD monitor channel. The component utilizes a 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, housed in a compact 10-lead MSOP package.

Feature Summary

• Integrated digital filter optimized for simultaneous 50 Hz and 60 Hz noise rejection at a 16.6 Hz update rate
• Internal clock oscillator removes requirement for external clock sources
• Low power consumption with dedicated power-down mode capability
• Built-in VDD monitor channel for direct power supply measurement

Applications

• Smart transmitters
• Battery-powered instrumentation
• Portable sensor measurement systems
• Temperature and pressure measurement applications
• Weigh scales and 4 to 20 mA loop interfaces

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Ensure compatibility with system voltage requirements and interface protocols before integration. Cross-reference part numbers with manufacturer databases to validate authenticity and revision status.

Selection Notes

Select this component for applications requiring high resolution at low sampling rates with minimal power usage. Consider the AD7789 if 24-bit resolution is necessary. Verify that the external reference voltage falls within the specified operational range relative to the supply voltage.

Part Context

This component belongs to the AD7788/AD7789 series of low-frequency, low-noise analog front ends designed for precision measurement tasks. The AD7788 specifically offers 16-bit resolution, serving as the lower-resolution variant compared to the 24-bit AD7789. Both devices share identical pinouts and functional architectures.

Replacement Considerations

The AD7788BRMZ is a parameter-equivalent alternative within the same product family. The AD7790BRMZ is listed as a similar replacement option by distributors.