AD5821ABCBZ-REEL7

Overview

The AD5821ABCBZ-REEL7 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 and includes a power-on reset circuit that ensures the output powers up to 0 V. Key electrical specifications include a settling time of 250 μs, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±1.5 LSB. It is housed in a 3 × 3 mm WLCSP package.

Feature Summary

• 120 mA maximum current sink capability for driving voice coil actuators
• Integrated internal reference and 3.3 Ω sense resistor
• Guaranteed monotonic operation over all codes
• Power-down mode reduces current consumption to 0.5 μA typical

Applications

• Lens autofocus systems in camera modules
• Image stabilization mechanisms
• Optical zoom controls
• Shutter and iris/exposure control circuits
• Industrial heater and fan controls

Procurement Notes

Verify the specific suffix REEL7 corresponds to the reel packaging configuration as indicated by the manufacturer's ordering guide. Confirm the B version temperature range of −30°C to +85°C matches the application requirements. Ensure the I²C address 0xC is compatible with the system bus architecture before integration.

Selection Notes

Select this component when a high-current sink DAC is required for direct voice coil drive without external amplification. The integrated sense resistor simplifies design by eliminating external components for current monitoring. Verify that the load resistance allows for the required compliance voltage headroom at the target operating current.

Part Context

This part belongs to the AD5821A family of current-sinking DACs designed specifically for actuator control. The ABCBZ designation indicates the B grade temperature variant packaged in a Wafer Level Chip Scale Package (WLCSP). The REEL7 suffix denotes the tape and reel shipping format used for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.