DAC8760 16-Bit Single-Channel Programmable Current/Voltage Output DAC for 4-20mA current loop applications | TI.com

DAC8760 (ACTIVE)

16-Bit Single-Channel Programmable Current/Voltage Output DAC for 4-20mA current loop applications

 

Description

The DAC7760 and DAC8760 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; or as a voltage output with a range of 0 V to 5 V, 0 V to 10 V, ±5 V, or
±10 V with a 10% overrange (0 V to 5.5 V, 0 V to
11 V, ±5.5 V, or ±11 V). Both current and voltage outputs can be simultaneously enabled while being controlled by a single data register.

These devices include a power-on-reset function to ensure powering up in a known state (both IOUT and VOUT are disabled and in a Hi-Z state). The CLR and CLR-SEL pins set the voltage outputs to zero-scale or midscale, and the current output to the low end of the range, if the output is enabled. Zero and gain registers can be programmed 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 either a single 10-V to 36-V supply, or dual supplies of up to ±18 V. All versions are available in both 6-mm ×
6-mm 40-pin VQFN and 24-pin HTSSOP packages.

Features

  • Current Output: 4 mA to 20 mA;
    0 mA to 20 mA; 0 mA to 24 mA
  • Voltage Output:
    • 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
    • 0 V to 5.5 V; 0 V to 11 V; ±5.5 V; ±11 V
      (10% Over Range)
  • ±0.1% FSR Total Unadjusted Error (TUE) Maximum
  • DNL: ±1 LSB Maximum
  • Simultaneous Voltage and Current Output
  • Internal 5-V Reference (10 ppm/°C, Maximum)
  • Internal 4.6-V Power-Supply Output
  • Reliability Features:
    • CRC Check and Watchdog Timer
    • Thermal Alarm
    • Open Alarm, Short Current Limit
  • Wide Temperature Range: –40°C to 125°C
  • 6-mm × 6-mm 40-Pin VQFN and 24-Pin HTSSOP Packages

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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
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SPI     SPI     SPI     SPI     SPI     SPI    
24     24     24     24     24     24    
0     0     0     0     -24     -24    
10     10     10     10     10     10    
Buffered Current
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Buffered Current     Buffered Current
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Buffered Current
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Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Current Output
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