DAC70508 Texas instruments

DAC70508

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DAC70508

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Описание

The DACx0508 is a pin-compatible family of low power, eight-channel, buffered voltage-output, digital-to-analog converters (DACs) with 16-, 14- and 12-bit resolution. The DACx0508 includes a 2.5-V, 5-ppm/°C internal reference, eliminating 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 = ½), 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single 2.7-V to 5.5-V supply, is specified monotonic and provides high linearity of ±1 LSB INL. 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. The device consumes 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.

Performance
- INL: ±1 LSB Maximum at 16-Bit Resolution
- TUE: ±0.1% of FSR Maximum
Integrated 2.5 V Precision Internal Reference
- Initial Accuracy: ±5 mV Maximum
- Low Drift: 2 ppm/°C Typical, DAC80508
High Drive Capability: 20 mA with 0.5 V from Supply Rails
Flexible Output Configuration
- User Selectable Gain: 2, 1 or ½
- Reset to Zero Scale or Midscale
- Clear Output Function: DACx0508C
Wide Operating Range
- Power Supply: 2.7 V to 5.5 V
- Temperature 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 × 3 mm, 16-Pin WQFN
- 2.4 mm x 2.4 mm, 16-Pin DSBGA

Resolution (Bits)	14
Number of DAC channels	8
Interface type	SPI
Output type	Buffered Voltage
Settling time (µs)	5
Features	Reset to Mid-Scale, Small Size
Reference type	Int
Architecture	R-2R
Rating	Catalog
Output range (max) (mA/V)	5
Output range (min) (mA/V)	0
Sample/update rate (Msps)	1
Power consumption (typ) (mW)	33
Operating temperature range (°C)	-40 to 125