AD5749(Rev0) 查看數據表（PDF） - Analog Devices

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AD5749
(Rev.:Rev0)

Industrial Current Out Driver, Single-Supply, 55 V Maximum Supply, Programmable Ranges

Analog Devices 

AD5749

Pin No.

12, 13

Mnemonic

REXT2, REXT1

14

15

16

17

18

19, 20, 23, 24

21, 22

25, 26, 27, 28

29

VREF

VIN

GND

AVDD

IOUT

DNC

GND

NC

HW SELECT

30

RESET

31

FAULT/TEMP

32

NC/IFAULT

33 (EPAD)

EPAD

Description

A 15 kΩ external current setting resistor can be connected between the REXT1 and REXT2 pins to

improve the IOUT temperature drift performance.

Buffered Reference Input.

Buffered Analog Input (0 V to 4.096 V).

Ground Connection.

Positive Analog Supply.

Current Output.

Do not connect to these pins.

Ground Connection.

No Connect. Can be tied to GND.

This part is used to configure the part to hardware or software mode.

HW SELECT = 0 selects software control.

HW SELECT = 1 selects hardware control.

In software mode, this pin resets the part to its power-on state. Active low.

In hardware mode, there is no reset. If using the part in hardware mode, the RESET pin should be tied

high.

Fault Alert (FAULT). In software mode, this pin acts as a general fault alert pin. It is asserted low when an

open-circuit, overtemperature error, or PEC interface error is detected. This pin is an open-drain output

and must be connected to a pull-up resistor.

Overtemperature Fault (TEMP). In hardware mode, this pin acts as an overtemperature fault pin. It is

asserted low when an overtemperature error is detected. This pin is an open-drain output and must be

connected to a pull-up resistor.

No Connect (NC). In software mode, this pin is a no connect. Instead, tie this pin to GND.

Open-Circuit Fault Alert (IFAULT). In hardware mode, this pin acts as an open-circuit fault alert pin. It is

asserted low when an open-circuit error is detected. This pin is an open-drain output and must be

connected to a pull-up resistor.

The exposed paddle is tied to GND.

Rev. 0 | Page 9 of 28

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