AD5691RBCPZ-RL7

Overview

The AD5691RBCPZ-RL7 is a single-channel, 12-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device utilizes an I2C serial interface and offers selectable output spans of 0 V to VREF or 0 V to 2 × VREF. Key electrical parameters include a maximum settling time of 5 µs, ±1 LSB differential nonlinearity, and a power-down current of 2 µA. It is housed in an ultrasmall 2 mm × 2 mm, 8-lead LFCSP package.

Feature Summary

• 12-bit resolution with ±1 LSB INL (B Grade) and guaranteed monotonicity
• Internal 2.5 V reference with 2 ppm/°C typical temperature coefficient
• I2C serial interface with software-selectable gain (×1 or ×2)
• Low power consumption: 350 µA normal mode, 2 µA power-down

Applications

• Process control systems
• Data acquisition systems
• Programmable voltage sources
• Digital gain and offset adjustment

Procurement Notes

Verify the specific suffix 'BCPZ-RL7' against the official ordering guide to confirm pin configuration options such as LDAC, RESET, or VLOGIC availability. Ensure the B-grade accuracy specification aligns with design requirements for integral nonlinearity. Confirm RoHS compliance status through the manufacturer's documentation before procurement.

Selection Notes

Select this component when a single-channel 12-bit DAC with high relative accuracy is required in a minimal footprint. The internal reference eliminates external components, reducing board space. Verify that the I2C bus speed and address configuration meet system constraints. Consider the 2 mm × 2 mm LFCSP package for thermal management and layout guidelines specified in the datasheet.

Part Context

This part belongs to the nanoDAC+ family, which includes the AD5693R (16-bit), AD5692R (14-bit), and AD5691R (12-bit). The AD5691R provides a balance of resolution and performance for cost-sensitive applications. The 'R' indicates the presence of an internal reference, while 'B' denotes the B-grade accuracy level. The 'CPZ' indicates the LFCSP package, and 'RL7' specifies the tape and reel packaging quantity.

Replacement Considerations

Direct functional replacements within the same family include the AD5692RBCPZ-RL7 (14-bit) and AD5693RBCPZ-RL7 (16-bit) for higher resolution needs. For SPI interface compatibility, consider the AD5681RACPZ-RL7. Verify pinout compatibility if substituting with variants featuring different control pins like RESET or VLOGIC.