DAC7760 12-bit, single-channel, programmable current/voltage output DAC for 4-20mA current loop applications | TI.com

DAC7760 (ACTIVE) 12-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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Parametrics

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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
DAC7760 Order now 12     String     1     SPI     24     0     10     Buffered Current
Buffered Voltage    
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    
DAC8750 Order now 16     String     1     SPI     24     0     10     Buffered Current     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