Single-Channel, 16-Bit, Programmable Current/Voltage Output DAC for 4-20mA Current Loop Applications - DAC8760

DAC8760 (ACTIVE)

Single-Channel, 16-Bit, Programmable Current/Voltage Output DAC for 4-20mA Current Loop Applications



Featured Reference Design

Single-Channel Industial Voltage and Current Output Driver, Isolated, EMC/EMI Tested


TIPD153 Test Circut Schematic for Single-Channel Industrial Voltage and Current Output Driver, Isolated, EMC/EMI Tested
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  • DAC8760 - Single-Channel, 16-Bit, Programmable Current/Voltage Output DAC for 4-20mA Current Loop Applications
  • ISO7641FC – 4kVpk Low Power Quad Channel, 25Mbps Digital Isolator

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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 QFN-40 and TSSOP-24 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% Overrange)
  • ±0.1% FSR Total Unadjusted Error (TUE) Max
  • DNL: ±1 LSB Max
  • Simultaneous Voltage and Current Output
  • Internal 5-V Reference (10 ppm/°C, max)
  • 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 QFN-40; TSSOP-24 Packages

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Parametrics Compare all products in Precision DAC with 4 to 20mA current output

 
Resolution (Bits)
DAC: Channels
Total Unadjusted Error (Max) (%FSR)
Output Range Max. (V or mA)
Output Type
Interface
Reference: Type
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
Analog Supply (Min) (V)
Analog Supply (Max) (V)
DNL (Max) (+/-LSB)
Digital Supply (Min) (V)
Digital Supply (Max) (V)
Gain Error (Max) (%FSR)
Power Consumption (Typ) (mW)
Full Scale Error (Max) (%FSR)
Offset Error (Max) (%)
DAC8760 DAC7750 DAC7760 DAC8750
16     12     12     16    
1     1     1     1    
0.1     0.1     0.1     0.1    
24     24     24     24    
Current
Voltage    
Current     Current
Voltage    
Current    
Serial SPI     Serial SPI     Serial SPI     Serial SPI    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
24HTSSOP
40VQFN    
24HTSSOP
40VQFN    
24HTSSOP
40VQFN    
24HTSSOP
40VQFN    
3.99 | 1ku     2.49 | 1ku     2.99 | 1ku     3.49 | 1ku    
10     10     10     10    
36     36     36     36    
1     1     1     1    
2.7     2.7     2.7     2.7    
5.5     5.5     5.5     5.5    
0.07     0.07     0.07     0.07    
135     135     135     135    
0.1     0.1     0.1     0.1    
0.1     0.1     0.1     0.1    

Companion parts

Part # Name Product Family Comments
OPA192   High Voltage, Rail-to-Rail Input/Output,Precision Op Amps, E-Trim(TM) Series   OPERATIONAL AMPLIFIER - PRECISION AMPLIFIER    Creates a combined V and I output that allows for a single two-terminal output connector  
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