Single-Channel, 12-Bit Programmable Current Output DAC - DAC7750

DAC7750 (ACTIVE)

Single-Channel, 12-Bit Programmable Current Output DAC

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 6-mm × 6-mm QFN-40 and TSSOP-24 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 Max
  • Max Loop Compliance Voltage: AVDD – 2 V
  • Internal 5-V Reference (10 ppm/°C, max)
  • 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 QFN-40 and 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) (%)
DAC7750 DAC7760 DAC8750 DAC8760
12     12     16     16    
1     1     1     1    
0.1     0.1     0.1     0.1    
24     24     24     24    
Current     Current
Voltage    
Current     Current
Voltage    
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    
2.49 | 1ku     2.99 | 1ku     3.49 | 1ku     3.99 | 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    

Related end equipment

  • 4-mA to 20-mA Current Loops
  • Analog Output Modules
  • Building Automation
  • Environment Monitoring
  • Programmable Logic Controllers (PLCs)
  • Field Sensors and Process Transmitters

HART is a registered trademark of HART Communication Foundation.
SPI, QSPI are trademarks of Motorola, Inc.
All other trademarks are the property of their respective owners.

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