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

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 Compare all products in Precision DACs (=<10MSPS)

 
Resolution (Bits)
DAC Channels
DAC Architecture
Interface
Output Type
Output Range Min. (mA/V)
Output Range Max. (mA/V)
Settling Time (µs)
Reference: Type
Rating
Pin/Package
Operating Temperature Range (C)
Special Features
DAC7760 DAC7750 DAC8750 DAC8760
12    12    16    16   
1    1    1    1   
String    String    String    String   
SPI    SPI    SPI    SPI   
Buffered Voltage
Buffered Current   
Buffered Current    Buffered Current    Buffered Voltage
Buffered Current   
0    0    0    0   
24    24    24    24   
10    10    10    10   
Ext
Int   
Ext
Int   
Ext
Int   
Ext
Int   
Catalog    Catalog    Catalog    Catalog   
24HTSSOP
40VQFN   
24HTSSOP
40VQFN   
40VQFN
24HTSSOP   
24HTSSOP
40VQFN   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
Current Output    Current Output    Current Output    Current Output