Industrial I/V Output Driver,

Single Supply, 60v Compliance,

Programmable Ranges

Preliminary Technical Data

AD5751

Rev. PrA

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FEATURES

Current Output Ranges: 4–20mA, 0–20mA or 0–24mA,

0.1% Total Unadjusted Error (TUE)

5ppm/°C Output Drift

60V MAX IOUT Compliance Voltage

Voltage Output Ranges: 0-5V, 0-10V, 0-40v

20% over-range

0.1% Total Unadjusted Error (TUE)

Flexible Serial Digital Interface

On-Chip Output Fault Detection

PEC Error Checking

Asynchronous CLEAR Function

Power Supply Range

Temperature Range: -40°C to +105°C

LFCSP Packages

APPLICATIONS

Process Control

Actuator Control

PLC

GENERAL DESCRIPTION

The AD5751 is a single channel, low-cost, precision,

voltage/current output driver with hardware or software

programmable output ranges. The software ranges are

configured via an SPI/Microwire compatible serial interface.

The AD5751 targets applications in PLC and industrial process

control. The analog input to the AD5751 is provided from a

low voltage, single supply digital-to-analog converter and is

internally conditioned to provide the desired output

current/voltage range.

The output current range is programmable across three current

ranges -

4–20mA, 0–20mA or 0–24mA.

Voltage output is provided from a separate pin that can be

configured to provide 0V to 5V, 0V to 10V and 0-40V output

ranges. An over-range of 10% is available on the voltage

ranges.

Analog outputs are short and open circuit protected and can

drive capacitive loads of 1uF and inductive loads of 0.1H.

The device is specified to operate with a power supply range

from 12 V to

60 V. Output loop compliance is 0 V to AV

2.5 V.

The flexible serial interface is SPI and MICROWIRE

compatible and can be operated in 3-wire mode to minimize the

digital isolation required in isolated applications. The interface

also features an optional PEC error checking feature using

CRC-8 error checking, useful in industrial environments where

data communication corruption can occur.

The device also includes a power-on-reset function ensuring

that the device powers up in a known state and an

asynchronous CLEAR pin which sets the outputs to zero-scale /

mid-scale voltage output or the low end of the selected current

range.

A HW SELECT pin is used to configure the part for hardware

or software mode on power up.

The total output error is typically

±0.1% in both current mode

and voltage mode.

Table 1. Related Devices

Part Number

Description

AD5422

Single Channel, 16-Bit, Serial

Input Current Source and

Voltage Output DAC