DAC8750 16-Bit Single-Channel Programmable Current Output DAC for 4-20mA Current-Loop Applications | TI.com

DAC8750
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16-Bit Single-Channel Programmable Current Output DAC for 4-20mA Current-Loop Applications

 

Description

The DAC7750 and DAC8750 are low-cost, precision, fully-integrated 12-bit and 16-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 DAC7750 and DAC8750 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 that the device powers up in a known state (IOUT is disabled and in a Hi-Z state). The CLR terminal sets the current output to the low end of the range if the output is enabled. Program the zero and gain registers to digitally calibrate the device in the end system. The output slew rate is also programmable by register. These devices can superimpose an external HART® signal on the current output, and can operate with a 10-V to 36-V supply.

All versions are available in both 40-pin VQFN and 24-pin TSSOP packages.

Features

  • Current Output Options:
    • 0 mA to 24 mA
    • 4 mA to 20 mA
    • 0 mA to 20 mA
  • ±0.1% FSR Typical Total Unadjusted Error (TUE)
  • DNL: ±1 LSB Maximum
  • Max Loop Compliance Voltage: AVDD – 2 V
  • Internal 5-V Reference: 10 ppm/°C (Maximum)
  • Internal 4.6-V Power-Supply Output
  • CRC Frame Error Check
  • Watchdog Timer
  • Thermal Alarm
  • Open Circuit Alarm
  • Terminals to Monitor Output Current
  • On-Chip Fault Alarm
  • User-Calibration for Offset and Gain
  • Wide Temperature Range: –40°C to 125°C
  • 6-mm × 6-mm 40-Pin VQFN and 24-Pin HTSSOP Packages

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Parametrics

Compare all products in Precision DACs (<=10MSPS) Email Download to Excel
Part number Order Resolution (Bits) Architecture DAC channels Interface Output range (Max) (mA/V) Output range (Min) (mA/V) Settling time (µs) Output type Reference: type Rating Operating temperature range (C) Features
DAC8750 Order now 16     String     1     SPI     24     0     10     Buffered Current     Ext
Int    
Catalog     -40 to 125     Current Output
Low Power    
DAC7750 Order now 12     String     1     SPI     24     0     10     Buffered Current     Ext
Int    
Catalog     -40 to 125     Current Output
Low Power    
DAC7760 Order now 12     String     1     SPI     24     0     10     Buffered Current
Buffered Voltage    
Ext
Int    
Catalog     -40 to 125     Current Output
Low Power    
DAC8760 Order now 16     String     1     SPI     24     0     10     Buffered Current
Buffered Voltage    
Ext
Int    
Catalog     -40 to 125     Current Output
Low Power