Texas Instruments' DAC60508, DAC70508, and DAC80508 are pin-compatible, low power, 8-channel, buffered voltage-output, digital-to-analog converters (DACs) with 16-, 14-, and 12-bit resolution, respectively. The DACx0508 includes a 2.5 V, 5 ppm/°C internal reference that eliminates the need for an external precision reference in most applications. A user selectable gain configuration provides full-scale output voltages of 1.25 V (gain = 1/2), 2.5 V (gain = 1), or 5 V (gain = 2). These devices operate from a single 2.7 V to 5.5 V supply, are specified monotonic, and provide high linearity of ±1 LSB INL.
The communication to the DACx0508 is performed through a serial interface that operates at clock rates up to 50 MHz. The VIO pin enables serial interface operation from 1.7 V to 5.5 V. The DACx0508 flexible interface enables operation with a wide range of industry-standard microprocessors and microcontrollers.
The DACx0508 incorporates a power-on-reset circuit that powers up and maintains the DAC outputs at either zero scale or midscale until a valid code is written to the device. These devices consume low current of 0.6 mA/channel at 5.5 V making it suitable for battery-operated equipment. A per-channel power-down feature reduces the device current consumption to 15 µA. The DACx0508 is characterized for operation over the temperature range of -40°C to +125°C and is available in small packages.
Features
- Performance:
- INL: ±1 LSB max. at 16-bit resolution
- TUE: ±0.1% of FSR max.
- Integrated 2.5 V precision internal reference:
- Initial accuracy: ±5 mV max.
- Low drift: 2 ppm/°C typ., DAC80508
- High drive capability: 20 mA with 0.5 V from supply rails
- Flexible output configuration:
- User selectable gain: 2, 1, or 1/2
- Reset to zero scale or midscale
- Clear output function: DACx0508C
- Wide operating range:
- Power supply: 2.7 V to 5.5 V
- Temp. range: -40°C to +125°C
- 50 MHz SPI compatible serial interface:
- 1.7 V to 5.5 V operation
- Daisy chain operation
- CRC error check
- Low power: 0.6 mA/channel at 5.5 V
- Small packages:
- 3 mm x 3 mm, 16-pin WQFN
- 2.4 mm x 2.4 mm, 16-pin DSBGA
Applications
- Optical networking
- Wireless infrastructures
- Industrial automation
- Data acquisition systems
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Texas Instruments' DAC60508, DAC70508, and DAC80508 are pin-compatible, low power, 8-channel, buffered voltage-output, digital-to-analog converters (DACs) with 16-, 14-, and 12-bit resolution, respectively. The DACx0508 includes a 2.5 V, 5 ppm/°C internal reference that eliminates the need for an external precision reference in most applications. A user selectable gain configuration provides full-scale output voltages of 1.25 V (gain = 1/2), 2.5 V (gain = 1), or 5 V (gain = 2). These devices operate from a single 2.7 V to 5.5 V supply, are specified monotonic, and provide high linearity of ±1 LSB INL.
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