AD5821ABCBZ-REEL

Overview

The AD5821ABCBZ-REEL is a single-channel, 10-bit digital-to-analog converter (DAC) featuring a 120 mA current sinking output. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and utilizes a 2-wire I²C-compatible serial interface with clock rates up to 400 kHz. The device integrates an internal reference, a power-on reset circuit, and a 3.3 Ω sense resistor. Key electrical specifications include a settling time of 250 μs, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±1.5 LSB. It supports a power-down mode reducing consumption to 0.5 μA typical.

Feature Summary

• 120 mA Current Sink Output
• 10-Bit Resolution with Integrated Reference
• I²C Serial Interface (Up to 400 kHz)
• Power-Down Mode (0.5 μA Typical)

Applications

• Lens autofocus systems
• Image stabilization actuators
• Optical zoom controls

Procurement Notes

Verify the specific suffix REEL against the manufacturer's ordering guide to confirm tape-and-reel packaging quantities. Confirm that the B version temperature range (-30°C to +85°C) aligns with the target application environment requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring precise control of voice coil motors where monotonicity is critical. Ensure the load resistance allows for the required compliance voltage headroom at maximum sink currents. Verify that the system logic levels are compatible with the specified I²C input thresholds.

Part Context

This part belongs to the AD5821A series of nanoDACs designed specifically for driving linear actuators in portable imaging devices. It replaces discrete driver solutions by integrating the DAC, amplifier, and sense resistor into a compact 9-ball WLCSP package.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.