AD5676BCPZ-REEL7

Overview

The AD5676BCPZ-REEL7 is an octal, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features a serial peripheral interface (SPI) operating at clock rates up to 50 MHz and supports daisy-chain or readback modes. The device operates from a single 2.7 V to 5.5 V supply with 1.8 V logic compatibility. Key electrical parameters include a maximum integral nonlinearity (INL) of ±3 LSB for the B grade, a typical settling time of 5 µs, and a normal mode supply current of 1.1 mA to 1.3 mA. It utilizes an external reference input and offers user-selectable gain of 1 or 2.

Feature Summary

• Octal 16-bit resolution with segmented string DAC architecture ensuring monotonicity.
• High relative accuracy with maximum INL of ±3 LSB (B Grade).
• Versatile 50 MHz SPI interface with readback and daisy-chain capabilities.
• User-selectable output gain of 1× or 2× via hardware pin or register.

Applications

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

Procurement Notes

Verify the specific package type against the ordering suffix. The 'CPZ' suffix indicates a Leadframe Chip Scale Package (LFCSP), whereas other suffixes like 'RUZ' denote TSSOP. Confirm the grade (A or B) required for your linearity specifications, as performance metrics such as INL vary between grades. Ensure the reel quantity matches production needs.

Selection Notes

Select the AD5676BCPZ-REEL7 when eight independent 16-bit channels are required in a compact footprint. The LFCSP package is suitable for high-density PCB layouts. Choose this model over internal reference variants if an external precision voltage reference is already present in the design or if higher reference flexibility is needed. Verify that the system logic levels are compatible with the 1.62 V to 5.5 V VLOGIC range.

Part Context

This component belongs to the nanoDAC+ family, designed for low-power, high-accuracy applications. The AD5676 series includes variants with internal references (AD5676R) and different resolutions. The BC part number specifically denotes the B-grade accuracy version housed in a 20-lead LFCSP package, supplied in a tape-and-reel format for automated assembly.

Replacement Considerations

The AD5676ARUZ is a pin-compatible alternative in a TSSOP-20 package. For lower channel counts, consider the AD5675 (quad) or AD5674 (dual). If internal reference integration is preferred, the AD5676R series is available, though it lacks the external VREF pin functionality.