AD5679BCPZ-1

Overview

The AD5679BCPZ-1 is a low-power, 16-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features an internal 2.5 V reference with a typical temperature coefficient of 2 ppm/°C and a user-selectable gain pin for full-scale outputs of 2.5 V or 5 V. Operating on a single 2.7 V to 5.5 V supply, the device integrates a power-on reset circuit ensuring zero-scale or midscale startup. It supports a 50 MHz SPI interface with readback or daisy-chain capabilities and includes a power-down mode reducing current consumption to 2 μA typical.

Feature Summary

• 16 channels in a compact 4 mm × 4 mm LFCSP package
• High relative accuracy with integral nonlinearity (INL) of ±4 LSB maximum at 16 bits
• Integrated 2.5 V voltage reference with 2 ppm/°C typical drift
• User-selectable gain of 1 or 2 via the GAIN pin

Applications

• Optical transceivers
• Base station power amplifiers
• Process control input/output cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's ordering guide to confirm the exact power-up state configuration (zero-scale vs. midscale). Ensure the required packaging format matches the datasheet specifications for the selected suffix variant.

Selection Notes

Select this component when high channel density and 16-bit resolution are required within a small footprint. The integrated low-drift reference simplifies design by eliminating external components. Verify that the load capacitance requirements do not exceed the specified stability limits for the chosen gain setting.

Part Context

This part belongs to the nanoDAC+ family, which provides high integration in small packages. The AD5679 variant specifically offers 16-bit resolution compared to the 12-bit AD5674. Both share identical pinouts and functional blocks, differing primarily in resolution and linearity specifications.

Replacement Considerations

The AD5674BCPZ-1 serves as a lower-resolution alternative within the same package. For applications requiring external references, the AD5679 (without the 'R' suffix) allows external reference input instead of using the internal one.