数模转换器- DAC 12-bit octal SPI nanoDAC with ref
Product Details
The AD5672R/AD5676R are low power, octal, 12-/16-bit buffered voltage output digital-to-analog converters DACs. They include a 2.5 V, 2 ppm/°C internal reference enabled by default and a gain select pin giving a full-scale output of 2.5 V gain = 1 or 5 V gain = 2. All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5672R/AD5676R are available in a 20-lead TSSOP package.
The AD5672R/AD5676R also incorporate a power-on reset circuit and a RSTSEL pin that ensures that the DAC outputs power up to zero scale or midscale and remain there until a valid write takes place. Each part contains a per channel power-down feature that reduces the current consumption of the device to 2.5 µA while in power-down mode.
The AD5672R/AD5676R employ a versatile serial peripheral interface SPI that operates at clock rates up to 50 MHz, and all devices contain a VLOGIC pin intended for 1.8 V/3 V/5 V logic.
**Product Highlights**
1. High Relative Accuracy INL.
AD5672R 12-bit: ±0.1 LSB maximum
AD5676R 16-bit: ±3 LSB maximum
2. Low Drift 2.5 V On-Chip Reference.
**Applications**
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- Optical transceivers
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- Base-station power amplifiers
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- Process control programmable logic control [PLC] I/O cards
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- Industrial automation
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- Data acquisition systems
### Features and Benefits
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- High Performance
High relative accuracy INL:
± 3 LSB maximum at 16 bits
Total unadjusted error TUE: ± 0.14% of FSR maximum
Offset error: ±1.6 mV maximum
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- Wide Operating Ranges
−40°C to +125°C temperature range
2.7 V to 5.5 V power supply
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- Easy Implementation
User selectable gain of 1 or 2 GAIN pin
Reset to zero scale or midscale RSTSEL pin
1.8 V logic compatibility
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- 50 MHz SPI with readback or daisy chain
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- See datasheet for additional features
