Overview
The DAC8750IPWPR, produced by Texas Instruments, is a 16-bit single-channel programmable current output digital-to-analog converter (DAC) designed for industrial process-control applications. This device is part of the DACx750 family, which includes both 12-bit and 16-bit versions. It is engineered to provide high precision and reliability, making it suitable for a wide range of current-loop applications.
The DAC8750IPWPR offers multiple current output ranges, including 0 mA to 24 mA, 4 mA to 20 mA, and 0 mA to 20 mA, with a typical total unadjusted error (TUE) of ±0.1% full-scale range (FSR). It features an internal 5-V reference with a temperature coefficient of 10 ppm/°C and an internal 4.6-V power-supply output.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Current Output Ranges | 0 mA to 24 mA, 4 mA to 20 mA, 0 mA to 20 mA | |
| Total Unadjusted Error (TUE) | ±0.1% FSR | |
| Differential Nonlinearity (DNL) | ±1 LSB maximum | |
| Maximum Loop Compliance Voltage | AVDD – 2 V | V |
| Internal Reference Voltage | 5 V ± 10 ppm/°C | V |
| Internal Power-Supply Output | 4.6 V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Options | 40-pin VQFN, 24-pin HTSSOP | |
| Supply Voltage Range | 10 V to 36 V | V |
Key Features
- CRC frame error check for data integrity
- Watchdog timer for system reliability
- Thermal alarm and open-circuit alarm for fault detection
- Pins to monitor output current for real-time feedback
- On-chip fault alarm for comprehensive error handling
- User-calibration for offset and gain to ensure accuracy
- Programmable output slew rate to control the rate of current change
- Ability to superimpose an external HART signal on the current output
- Power-on-reset function to ensure a known state at startup
- CLR pin to set the current output to the low end of the range if enabled
Applications
- Analog output modules
- CPU (PLC controllers)
- Flow transmitters
- Other sensor transmitters (e.g., pH, gas, concentration, force, humidity)
- Actuators
- Process analytics
Q & A
- What are the current output ranges of the DAC8750IPWPR?
The DAC8750IPWPR offers current output ranges of 0 mA to 24 mA, 4 mA to 20 mA, and 0 mA to 20 mA.
- What is the typical total unadjusted error (TUE) of the DAC8750IPWPR?
The typical TUE is ±0.1% full-scale range (FSR).
- What is the resolution of the DAC8750IPWPR?
The resolution is 16 bits.
- What are the package options for the DAC8750IPWPR?
The device is available in 40-pin VQFN and 24-pin HTSSOP packages.
- What is the operating temperature range of the DAC8750IPWPR?
The operating temperature range is –40°C to +125°C.
- Does the DAC8750IPWPR support HART signals?
Yes, it can superimpose an external HART signal on the current output.
- What are the reliability features of the DAC8750IPWPR?
The device includes CRC frame error check, watchdog timer, thermal alarm, open-circuit alarm, and on-chip fault alarm.
- Can the output slew rate be programmed?
Yes, the output slew rate is programmable via register settings.
- What is the purpose of the CLR pin?
The CLR pin sets the current output to the low end of the range if the output is enabled.
- Can the DAC8750IPWPR be calibrated for offset and gain?
Yes, user-calibration for offset and gain is supported.
