AD5691RBRMZ-RL7

Overview

The AD5691RBRMZ-RL7 is a single-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) from the nanoDAC+ family. 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 a 2-Wire I2C interface and supports selectable output spans of 0 V to VREF or 0 V to 2 × VREF. Key electrical specifications include ±1 LSB Integral Nonlinearity (INL), ±1 LSB Differential Nonlinearity (DNL), and a maximum settling time of 5 µs. It is housed in a 10-lead MSOP package.

Feature Summary

• 12-bit resolution with ±1 LSB INL and ±1 LSB DNL
• 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
• Digital gain and offset adjustment circuits
• Programmable voltage sources

Procurement Notes

Verify the specific suffix RL7 corresponds to the reel packaging configuration required for automated assembly. Confirm that the B grade accuracy (±1 LSB INL) matches the design requirements, as A grade options exist with ±2 LSB INL. Ensure the MSOP-10 footprint aligns with the PCB layout guidelines provided in the datasheet outline dimensions section.

Selection Notes

Select this component when a single-channel, high-accuracy 12-bit DAC is needed with minimal external components due to the integrated reference. The I2C interface simplifies board routing compared to SPI devices. Consider the 2 µA power-down mode for battery-operated applications. Verify that the 2.7 V minimum supply voltage meets the system's low-voltage operational constraints.

Part Context

This part belongs to the AD569xR family, which includes 16-bit (AD5693R), 14-bit (AD5692R), and 12-bit (AD5691R) variants. All members share similar pinouts and interfaces but differ in resolution and accuracy grades. The AD5691R specifically targets cost-sensitive applications requiring 12-bit precision without the overhead of higher-resolution models.

Replacement Considerations

Direct functional replacements within the same family include the AD5692R (14-bit) and AD5693R (16-bit) if higher resolution is acceptable. For lower resolution needs, the AD5681R offers SPI compatibility but requires different interface logic. Cross-family replacements like the AD5693 require verification of pinout compatibility and reference configuration differences.