RCV420KP | Texas Instruments

Current Loop Receiver, RCV420KP, Texas Instruments

The RCV420 is a precision current-loop receiver designed to convert a 4-20 mA input signal into a 0-5 V output signal. As a monolithic circuit, it offers high reliability at low cost. The device consists of a premium-grade operational amplifier, an on-chip precision resistor network, and a precision 10 V reference. The RCV420 features 0.1% overall conversion accuracy, 86 dB CMR, and a ±40 V common-mode input range. The circuit introduces only a 1.5 V drop at full scale, which is useful in loops containing extra instrument burdens or in intrinsically safe applications where transmitter compliance voltage is limited. The 10 V reference provides a precise 10 V output with a typical drift of 5 ppm/°C. The RCV420 is completely self-contained and highly versatile. No adjustments are needed for gain, offset, or CMR, providing three key 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.

Features

• Internal Sense Resistors

Applications

• Process Control
• Industrial Control
• Factory Automation
• Data Acquisition
• Scada
• Machine Monitoring