AD7781CRZ - Analog Devices Inc.

Manufacturer Part Number

AD7781CRZ

Manufacturer

Analog Devices

Introduction

The AD7781CRZ is a high precision, low power, 20-bit Sigma-Delta Analog to Digital Converter (ADC) with a built-in programmable gain amplifier (PGA).

Product Features and Performance

20-bit resolution

Sigma-Delta architecture

7 samples per second sampling rate

Single differential input

External reference voltage

Programmable gain amplifier included

SPI data interface for communication

Operation within a wide supply voltage range (2.7V ~ 5.25V)

Suitable for operation between -40°C ~ 105°C

Surface mount 14-SOIC package

Product Advantages

High-resolution conversion enables precise measurements

Low power consumption suitable for battery-powered devices

Programmable gain amplifier for amplification of small signals

Robust temperature range ensuring reliability in various environments

Easy integration with microcontrollers via SPI

Key Technical Parameters

Number of Bits: 20

Sampling Rate: 16.7 per second

Number of Inputs: 1 (Differential)

Data Interface: SPI

Voltage - Supply, Analog: 2.7V ~ 5.25V

Voltage - Supply, Digital: 2.7V ~ 5.25V

Quality and Safety Features

Highly reliable with extended operating temperature range

Robust SOIC package for surface mount applications

Compatibility

SPI compatible interface allows for easy integration with most microcontrollers and digital systems

Application Areas

Industrial control systems

Data logging equipment

Medical instrumentation

Precision sensing applications

Battery-powered devices

Product Lifecycle

Product Status: Active

No known discontinuation, replacements or upgrades at present

Several Key Reasons to Choose This Product

Provides high precision data acquisition for critical measurements

Low sampling rate is optimized for static and near-static signal measurements

The wide voltage range offers flexibility in system power design

High integration with built-in PGA reduces external component count

Robust design ensures performance in harsh industrial environments

Ideal for applications where power efficiency is critical due to low power operation