AD5766BCBZ-RL7

Overview

The AD5766BCBZ-RL7 is a 16-channel, 16-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features integrated output buffers capable of sourcing or sinking up to 20 mA and supports eight software-programmable bipolar output ranges, including ±10 V and −20 V to 0 V. The device utilizes an external 2.5 V reference and operates with AVDD voltages up to 16 V and AVSS down to −22 V. Key specifications include a maximum settling time of 16 µs, 1 LSB differential nonlinearity, and a 4 mm × 4 mm WLCSP package. It incorporates two dither signal input pins and a channel monitoring multiplexer for system diagnostics.

Feature Summary

• 16-channel, 16-bit resolution with integrated output buffers providing ±20 mA drive capability
• Eight programmable output voltage ranges spanning from −20 V to +14 V
• Integrated 16-to-1 channel monitoring multiplexer accessible via MUX_OUT pin
• Two dedicated dither input pins (N0, N1) for superimposing low-frequency signals
• Versatile 4-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards

Applications

• Mach Zehnder modulator bias control
• Optical networking systems
• Industrial automation instrumentation
• Data acquisition systems
• Analog output modules

Procurement Notes

Verify the specific suffix BCBZ corresponds to the 49-ball WLCSP package and RL7 indicates reel packaging. Confirm that the BC grade meets the required integral nonlinearity specifications of ±16 LSB. Ensure the design accommodates the industrial temperature range of −40°C to +105°C and the necessary analog supply headroom requirements for the selected output voltage span.

Selection Notes

Select the AD5766 over the AD5767 when 16-bit resolution is required, as the AD5767 provides only 12-bit resolution. Evaluate the power supply constraints, noting the need for AVDD up to 16 V and AVSS down to −22 V to support the full output voltage ranges. Consider the thermal resistance of the WLCSP package (53 °C/W) if high output currents are utilized, as this impacts junction temperature management.

Part Context

The AD5766 belongs to the denseDAC family, designed for high-density multi-channel applications. It shares architectural similarities with the AD5767 but offers higher resolution. The device integrates reference buffers and output amplifiers to minimize external component count, distinguishing it from standard DACs that require external op-amps for voltage generation and buffering.

Replacement Considerations

The AD5767 serves as a lower-resolution alternative within the same family. No direct cross-model replacements with identical pinouts and specifications are documented in the provided datasheet.