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DAC7750IPWPR.B Datasheet(PDF) 19 Page - Texas Instruments

Part # DAC7750IPWPR.B
Description  DACx750 Single-Channel, 12-Bit and 16-Bit Programmable Current Output Digital-to-Analog Converters for 4-mA to 20-mA Current-Loop Applications
PDF  56 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

DAC7750IPWPR.B Datasheet(HTML) 19 Page - Texas Instruments

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8 Detailed Description
8.1 Overview
The DAC8750 and DAC7750 are low-cost, precision, fully-integrated, 16-bit and 12-bit digital-to-analog
converters (DACs) designed to meet the requirements of industrial process control applications. These devices
can be programmed as a current output with a range of 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA. The
DAC8750 and DAC7750 include reliability features such as CRC error checking on the serial peripheral interface
(SPI) frame, a watchdog timer, an open circuit, compliance voltage, and thermal alarm. In addition the output
current can be monitored by accessing an internal precision resistor.
These devices include a power-on-reset function to ensure powering up in a known state (both IOUT is disabled
and in a high-impedance state). The CLR pin sets the current output to the low-end of the range if the output is
enabled. Zero code error and gain error calibration registers can be programmed to digitally calibrate the device
in the end system. The output slew rate is also programmable. These devices can AC couple an external HART
signal on the current output and can operate with either a 10-V to 36-V supply.
8.2 Functional Block Diagram
GND
DACx750
AVDD
DVDD-EN
DVDD
Slew Rate
Control
User Calibration
Gain/Offset
Register
DAC Input
Register
Thermal
Alarm
Internal
Reference
REFOUT
REFIN
HART-IN
LATCH
SCLK
DIN
SDO
CLR
DAC
Pre-
Conditioning
Current
Source
I
ENABLE
ISET-R
I
GAIN
Current Output Stage
IOUT
ALARM
BOOST
R3-SENSE
Watchdog
Timer
www.ti.com
DAC7750, DAC8750
SBAS538D – DECEMBER 2013 – REVISED DECEMBER 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: DAC7750 DAC8750



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