Overview
The DAC61408RHAR from Texas Instruments is a high-performance, 8-channel digital-to-analog converter (DAC) with a 12-bit resolution. This device is part of the DACx1408 family, which includes pin-compatible 16-bit, 14-bit, and 12-bit versions. The DAC61408RHAR features integrated, low-drift, 2.5-V internal reference and high-voltage output buffers, making it suitable for a wide range of applications requiring precise analog output control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 Bits | |
| Integral Nonlinearity (INL) | -1 to +1 | LSB |
| Differential Nonlinearity (DNL) | -1 to +1 | LSB |
| Total Unadjusted Error (TUE) | -0.1 to +0.1 | %FSR |
| Output Voltage Range | ±20 V, ±10 V, ±5 V, ±2.5 V (bipolar), 40 V, 20 V, 10 V, 5 V (unipolar) | V |
| Output Current Capability | Up to 25 mA | mA |
| Package Type | VQFN (40 pins) | |
| Package Size | 6.00 mm × 6.00 mm | mm |
| Operating Temperature Range | -40°C to 125°C | °C |
| Supply Voltage (VIO) | 1.7 V to 5.5 V | V |
| High-Voltage Supply (VCC/VSS) | 9 V to 41.5 V / -21.5 V to 0 V | V |
Key Features
- Integrated 2.5-V precision internal reference, eliminating the need for an external precision reference in most applications.
- Specified monotonic at 12-bit resolution with high linearity (INL: ±1 LSB, DNL: ±1 LSB).
- User-selectable output configuration for full-scale bipolar and unipolar output voltages.
- Integrated DAC output buffers capable of sinking or sourcing up to 25 mA, reducing the need for additional operational amplifiers.
- Differential output capability with offset calibration for each pair of channels.
- Dedicated A-B toggle pins for dither signal generation with up to three possible frequencies.
- Power-on-reset circuit that connects DAC outputs to ground at power-up until proper configuration.
- 4-wire serial interface supporting operation from 1.7 V to 5.5 V.
Applications
- Industrial Automation: For precise control and monitoring in industrial automation systems.
- Test and Measurement: Suitable for high-accuracy test and measurement equipment.
- Process Control: Used in process control systems requiring high-resolution analog outputs.
- Aerospace and Defense: For applications demanding high reliability and precision.
Q & A
- What is the resolution of the DAC61408RHAR?
The DAC61408RHAR has a 12-bit resolution.
- What are the available output voltage ranges for the DAC61408RHAR?
The device supports bipolar output voltages of ±20 V, ±10 V, ±5 V, and ±2.5 V, and unipolar output voltages of 40 V, 20 V, 10 V, and 5 V.
- Does the DAC61408RHAR have an internal reference?
Yes, it includes a low-drift, 2.5-V internal reference.
- What is the maximum output current capability of the DAC61408RHAR?
The integrated DAC output buffers can sink or source up to 25 mA.
- What type of package does the DAC61408RHAR come in?
The device is packaged in a 40-pin VQFN (6.00 mm × 6.00 mm).
- What is the operating temperature range of the DAC61408RHAR?
The operating temperature range is -40°C to 125°C.
- How does the DAC61408RHAR communicate?
Communication is performed through a 4-wire serial interface.
- What are the supply voltage requirements for the DAC61408RHAR?
The device requires a VIO supply voltage of 1.7 V to 5.5 V and high-voltage supplies (VCC/VSS) of 9 V to 41.5 V / -21.5 V to 0 V.
- Does the DAC61408RHAR have power-on-reset functionality?
Yes, it includes a power-on-reset circuit that connects the DAC outputs to ground at power-up until proper configuration.
- Can the DAC61408RHAR generate differential outputs?
Yes, each pair of channels can be configured to provide differential outputs with offset calibration.
