Overview
The DAC81416RHAR from Texas Instruments is a 16-channel, 16-bit high-voltage output digital-to-analog converter (DAC) with an integrated internal reference. This device is part of the DACx1416 family, which includes pin-compatible 16-bit, 14-bit, and 12-bit resolution DACs. The DAC81416 is designed to provide high linearity and precision, making it suitable for a variety of applications requiring accurate analog output signals.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 16 |
| Integral Nonlinearity (INL) | ±1 LSB maximum |
| Total Unadjusted Error (TUE) | ±0.1% of FSR maximum |
| Internal Reference | 2.5-V precision internal reference |
| Initial Accuracy | ±2.5 mV maximum |
| Drift | 5 ppm/°C typical |
| Output Range | ±2.5 V, ±5 V, ±10 V, ±20 V, 0 to 5 V, 0 to 10 V, 0 to 20 V, or 0 to 40 V |
| Output Configuration | Flexible, including differential output mode |
| Output Drive Capability | ±25 mA with 1.5 V from supply rails |
| Serial Interface | 50-MHz SPI-compatible, 4-wire mode, 1.7-V to 5.5-V operation |
| Temperature Range | –40°C to +125°C |
| Package | 6 mm × 6 mm, 40-pin VQFN (RHA) |
Key Features
- High linearity with ±1 LSB INL and ±0.1% TUE
- Integrated 2.5-V precision internal reference with low drift (5 ppm/°C typical)
- Flexible output configuration with bipolar and unipolar output voltages
- High drive capability: ±25 mA with 1.5 V from supply rails
- Differential output mode with offset calibration
- Three dedicated A-B toggle pins for dither signal generation
- Analog temperature output with sensor gain of –4 mV/°C
- 50-MHz SPI-compatible serial interface with 4-wire mode and 1.7-V to 5.5-V operation
- Daisy-chain operation and CRC error check
- Power-on-reset circuit connecting DAC outputs to ground at power-up
Applications
- Mach-Zehnder modulator biasing
- Industrial control systems
- Automotive systems requiring high precision and reliability
- Medical devices needing accurate analog output signals
- Aerospace and defense applications requiring robust and precise DACs
Q & A
- What is the resolution of the DAC81416RHAR?
The DAC81416RHAR has a 16-bit resolution.
- How many channels does the DAC81416RHAR have?
The DAC81416RHAR has 16 channels.
- What is the integral nonlinearity (INL) of the DAC81416RHAR?
The INL is ±1 LSB maximum.
- What is the total unadjusted error (TUE) of the DAC81416RHAR?
The TUE is ±0.1% of FSR maximum.
- Does the DAC81416RHAR have an internal reference?
Yes, it includes a 2.5-V precision internal reference.
- What is the output drive capability of the DAC81416RHAR?
The output buffers can sink or source up to ±25 mA with 1.5 V from supply rails.
- What serial interface does the DAC81416RHAR use?
The DAC81416RHAR uses a 50-MHz SPI-compatible serial interface with 4-wire mode and 1.7-V to 5.5-V operation.
- What is the temperature range of the DAC81416RHAR?
The temperature range is –40°C to +125°C.
- What package type does the DAC81416RHAR come in?
The DAC81416RHAR comes in a 6 mm × 6 mm, 40-pin VQFN (RHA) package.
- Does the DAC81416RHAR support daisy-chain operation?
Yes, it supports daisy-chain operation and includes a CRC error check.
