AD5767BCPZ-RL7

Overview

The AD5767BCPZ-RL7 is a 16-channel, 12-bit voltage output denseDAC digital-to-analog converter manufactured by Analog Devices Inc. It features integrated output buffers capable of sourcing or sinking up to 20 mA and supports eight software-programmable bipolar output ranges from −20 V to +14 V. The device utilizes an external 2.5 V reference and includes two dither signal input pins for bias control applications. It operates with a versatile 4-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, supporting clock rates up to 50 MHz in write mode. The component is housed in a 40-lead LFCSP package and functions within a temperature range of −40°C to +105°C.

Feature Summary

• 16-channel architecture with 12-bit resolution and ±1 LSB INL
• Integrated output buffers providing ±20 mA current capability
• Eight programmable output voltage spans including ±5 V and ±10 V
• Dual dither input pins (N0, N1) for superimposing low-frequency signals
• 4-wire serial interface with 50 MHz write clock support

Applications

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

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when ordering. Confirm the BC grade corresponds to the industrial temperature range specifications. Ensure the LFCSP-40 footprint matches the PCB design guidelines provided in the datasheet. Cross-reference the revision history to confirm compatibility with existing firmware implementations.

Selection Notes

Select the AD5767 over the AD5766 when 12-bit resolution is sufficient, as it offers lower power consumption and tighter linearity specifications. Consider the integrated dither inputs if InP Mach Zehnder modulator biasing is required without external operational amplifiers. Verify that the system logic levels align with the VLOGIC pin requirements for 1.8 V, 3.3 V, or 5 V operation.

Part Context

This component belongs to the AD5766/AD5767 denseDAC family, which provides high-density multi-channel conversion in compact packages. The AD5767 variant specifically targets applications requiring 12-bit precision with high channel count. It shares architectural similarities with other Analog Devices voltage-output DACs but distinguishes itself through its integrated buffer current drive and dither capabilities.

Replacement Considerations

The AD5766BCPZ-RL7 is a direct functional substitute offering 16-bit resolution instead of 12-bit. Both devices share identical pinouts, package types, and interface protocols. Designers may upgrade to the AD5766 for improved accuracy without modifying the hardware layout.