AD5679R

概览

• 优势和特点

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• High performance

• High relative accuracy (INL): ±4 LSB maximum at 16 bits

• TUE: ±0.14% of FSR maximum

• Offset error: ±1.5 mV maximum

• Gain error: ±0.06% of FSR maximum

• Low drift 2.5 V voltage reference temperature coefficient:
  2 ppm/°C typical

• 40 mA short-circuit current

• Wide operating ranges

• −40°C to +125°C temperature range

• 2.7 V to 5.5 V power supply range

• Simplified implementation

• User selectable gain of 1 or 2 (GAIN pin)

• 1.8 V logic compatibility

• 50 MHz SPI with readback or daisy chain

• 28-lead, 4 mm × 4 mm, RoHS compliant LFCSP

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• 产品详情

The AD5679R is a low power, 16-channel, 16-bit, buffered voltage output, digital-to-analog converter (DAC) that includes a 2.5 V, 2 ppm/°C internal reference (enabled by default), and a gain select pin, resulting in a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single, 2.7 V to 5.5 V supply range and is guaranteed monotonic by design. The AD5679R is available in a 28-lead lead frame chip scale package (LFCSP) and incorporates a power-on reset (POR) circuit that ensures that the DAC outputs power up to and remains at zeros-cale until a valid write. The AD5679R contains a power-down mode that reduces the current consumption to 2 μA typical when in power-down mode.

Applications

• Optical transceivers

• Base station power amplifiers

• Process control (programmable logic controller (PLC) input/output cards)

• Industrial automation

• Data acquisition systems

Product Highlights

1. High channel density
   16 channels in 4 mm × 4 mm LFCSP

2. High relative accuracy (integral nonlinearity (INL))
   ±4 LSB maximum

3. Low drift, 2.5 V, on-chip reference