RCV420JP Precision 4-20mA Loop-Powered Receiver with 0.1% Accuracy Voltage Output On-Chip Reference Ultra-Low Drift & Noise for Robust Industrial Systems

RCV420JP Precision 4-20mA Loop-Powered Receiver with 0.1% Accuracy Voltage Output On-Chip Reference Ultra-Low Drift & Noise for Robust Industrial Systems

FEATURES

l COMPLETE 4-20mA TO 0-5V CONVERSION

l INTERNAL SENSE RESISTORS

l PRECISION 10V REFERENCE

l BUILT-IN LEVEL-SHIFTING

l ±40V COMMON-MODE INPUT RANGE

l 0.1% OVERALL CONVERSION ACCURACY

l HIGH NOISE IMMUNITY: 86dB CMR

APPLICATIONS

l PROCESS CONTROL

l INDUSTRIAL CONTROL

l FACTORY AUTOMATION

l DATA ACQUISITION

l SCADA

l RTUs

l ESD

l MACHINE MONITORING

DESCRIPTION

The RCV420 is a precision current-loop receiver de signed to convert a 4–20mA input signal into a 0–5V output signal. As a monolithic circuit, it offers high reliability at low cost. The circuit consists of a pre mium grade operational amplifier, an on-chip precision resistor network, and a precision 10V reference. The RCV420 features 0.1% overall conversion accuracy, 86dB CMR, and ±40V common-mode input range.

The circuit introduces only a 1.5V drop at full scale, which is useful in loops containing extra instrument burdens or in intrinsically safe applications where transmitter compliance voltage is at a premium. The 10V reference provides a precise 10V output with a typical drift of 5ppm/°C.

The RCV420 is completely self-contained and offers a highly versatile function. No adjustments are needed for gain, offset, or CMR. This provides three important advantages over discrete, board-level designs: 1) lower initial design cost, 2) lower manufacturing cost, and 3) easy, cost-effective field repair of a precision circuit.

INFORMATION

Drawing

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