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AD693 - Loop-Powered 4.20 mA Sensor Transmitter

Download the AD693 datasheet PDF. This datasheet also covers the AD6 variant, as both devices belong to the same loop-powered 4.20 ma sensor transmitter family and are provided as variant models within a single manufacturer datasheet.

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Note: The manufacturer provides a single datasheet file (AD6-93.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number AD693
Manufacturer Analog Devices
File Size 496.90 KB
Description Loop-Powered 4.20 mA Sensor Transmitter
Datasheet download datasheet AD693 Datasheet

General Description

PRODUCT HIGHLIGHTS The AD693 is a monolithic signal conditioning circuit which accepts low-level inputs from a variety of transducers to control a standard 4–20 mA, two-wire current loop.

An on-chip voltage reference and auxiliary amplifier are provided for transducer excitation;

up to 3.5 mA of excitation current is available when the device is operated in the loop-powered mode.

Overview

a.

Key Features

  • Instrumentation Amplifier Front End Loop-Powered Operation Precalibrated 30 mV or 60 mV Input Spans Independently Adjustable Output Span and Zero Precalibrated Output Spans: 4.
  • 20 mA Unipolar 0.
  • 20 mA Unipolar 12 ؎ 8 mA Bipolar Precalibrated 100 ⍀ RTD Interface 6.2 V Reference with Up to 3.5 mA of Current Available Uncommitted Auxiliary Amp for Extra Flexibility Optional External Pass Transistor to Reduce Self-Heating Errors Loop-Powered 4.
  • 20 mA Sensor Transmitter AD693 FU.

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