AD7789BRMZ-REEL

$9.58

Description：IC ADC 19BIT SIGMA-DELTA 10MSOP
Series：-

SKU:0a13714fa8ad Category: Analog to Digital Converters (ADC) Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC ADC 19BIT SIGMA-DELTA 10MSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Number of Bits：24
Sampling Rate (Per Second)：16.6
Number of Inputs：1
Input Type：Differential
Data Interface：SPI, DSP
Configuration：ADC
Ratio - S/H:ADC：-
Number of A/D Converters：1
Architecture：Sigma-Delta
Reference Type：External
Voltage - Supply, Analog：2.5V ~ 5.25V
Voltage - Supply, Digital：2.5V ~ 5.25V
Features：-
Operating Temperature：-40°C ~ 85°C
Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package：10-MSOP
Mounting Type：Surface Mount
Grade：-

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AD7789BRMZ-REEL

Overview

The AD7789BRMZ-REEL is a low-power, 24-bit Sigma-Delta analog-to-digital converter (ADC) from Analog Devices. It features a single differential input and operates on a supply voltage ranging from 2.5 V to 5.25 V. The device incorporates an internal clock oscillator, providing a nominal output update rate of 16.6 Hz for simultaneous 50 Hz and 60 Hz rejection. Key electrical specifications include a maximum power supply current of 75 µA in normal mode and 1 µA in power-down mode. The ADC delivers a typical RMS noise of 1.5 µV, resulting in 19 bits of peak-to-peak resolution. It utilizes a 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards.

Feature Summary

Integrated Sigma-Delta modulator with digital filtering optimized for low-frequency signal measurement
Internal clock oscillator eliminates the need for external clock sources
Schmitt-triggered SCLK input supports opto-isolated applications
On-chip VDD monitor channel enables power supply variation tracking

Applications

Smart transmitters
Battery-powered portable instrumentation
Weigh scales
Temperature and pressure measurement systems
4 to 20 mA loop receivers

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging. Confirm the B grade designation corresponds to the specified -40°C to +105°C operating temperature range. Ensure the ordering part number matches the exact pinout and package dimensions defined in the official datasheet outline.

Selection Notes

Select this component when high-resolution 24-bit conversion is required for low-frequency signals. The internal clock simplifies design by removing external crystal requirements. Consider the 16.6 Hz update rate if simultaneous line frequency rejection is necessary. Verify that the external reference voltage falls within the 0.1 V to VDD operational range.

Part Context

This component belongs to the AD7788/AD7789 family of low-power analog front ends. The AD7789 provides 24-bit resolution, while the AD7788 offers 16-bit resolution. Both share identical pinouts and interface protocols but differ in effective resolution and noise performance characteristics.