AD5412AREZ データシートの表示（PDF） - Analog Devices

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AD5412AREZ

Single Channel, 12-/16-Bit, Serial Input, Current Source and Voltage Output DACs, HART Connectivity

Analog Devices 

Data Sheet

Single Channel, 12-/16-Bit, Serial Input, Current

Source and Voltage Output DACs, HART Connectivity

AD5412/AD5422

FEATURES

12-/16-bit resolution and monotonicity

Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, or

0 mA to 24 mA

±0.01% FSR typical total unadjusted error (TUE)

±3 ppm FSR/°C output drift

Voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V

10% overrange

±0.01% FSR typical TUE

±2 ppm FSR/°C output drift

Flexible serial digital interface

On-chip output fault detection

On-chip reference: 10 ppm/°C maximum

Optional regulated DVCC output

Asynchronous clear function

Power supply range

AVDD: 10.8 V to 40 V

AVSS: −26.4 V to −3 V/0 V

Current loop compliance voltage: AVDD – 2.5 V

Temperature range: −40°C to +105°C

TSSOP and LFCSP packages

APPLICATIONS

Process controls

Actuator controls

PLC

HART network connectivity (LFCSP package only)

GENERAL DESCRIPTION

The AD5412/AD5422 are low cost, precision, fully integrated

12-/16-bit digital-to-analog converters (DAC) offering a pro-

grammable current source and programmable voltage output

designed to meet the requirements of industrial process control

applications.

The output current range is programmable at 4 mA to 20 mA,

0 mA to 20 mA, or an overrange function of 0 mA to 24 mA.

The LFCSP version of this product has a CAP2 pin so that the

HART signals can be coupled onto the current output of the

AD5412/AD5422.

Voltage output is provided from a separate pin that can be

configured to provide 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V

output ranges; an overrange of 10% is available on all ranges.

Analog outputs are short and open-circuit protected and can

drive capacitive loads of 1 µF.

The device operates with an AVDD power supply range from 10.8 V

to 40 V. Current loop compliance voltage is 0 V to AVDD − 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 device also includes a power-on-reset function, ensuring

that the device powers up in a known state. The part also includes

an asynchronous clear pin (CLEAR) that sets the outputs to

zero-scale/midscale voltage output or the low end of the

selected current range.

The total output error is typically ±0.01% in current mode and

±0.01% in voltage mode.

Table 1. Pin-Compatible Devices

Part No. Description

AD5410 Single channel, 12-bit, serial input current source DAC

AD5420 Single channel, 16-bit, serial input current source DAC

COMPANION PRODUCTS

HART Modem: AD5700, AD5700-1

Rev. O

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