AD5693RBRMZ

Overview

The AD5693RBRMZ is a single-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It operates on a single 2.7 V to 5.5 V supply and features an I2C serial interface. The device includes a default-enabled internal 2.5 V reference with a typical drift of 2 ppm/°C. Key electrical specifications include ±2 LSB maximum integral nonlinearity (INL), ±1 LSB differential nonlinearity (DNL), and a settling time of 5 µs. It supports selectable output spans of 0 V to VREF or 0 V to 2 × VREF, with a power-down mode reducing current consumption to 2 µA maximum at 5 V.

Feature Summary

• 16-bit resolution with ±2 LSB maximum 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: 1.2 mW at 3.3 V; 2 µA in power-down mode

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout options such as LDAC, RESET, or VLOGIC configurations. Ensure the selected variant matches the required package type, either 8-lead LFCSP or 10-lead MSOP, as these physical differences affect board layout and compatibility.

Selection Notes

Select this component for applications requiring high relative accuracy and low drift in a compact form factor. The internal reference eliminates the need for external components in many designs. Consider the gain setting when determining the output voltage range relative to the reference input. Verify that the I2C bus speed requirements are compatible with the device's timing characteristics.

Part Context

The AD5693RBRMZ belongs to the nanoDAC+ family, which also includes the AD5692R (14-bit) and AD5691R (12-bit). These devices share similar architectures and interfaces but differ in resolution and accuracy grades. The AD5693 variant specifically utilizes an external reference input, whereas the AD5693R includes an internal reference.

Replacement Considerations

Direct functional substitutes within the same family include the AD5692R and AD5691R, though they offer lower resolutions. For SPI interface alternatives, consider the AD5683R series. Verify pin compatibility and register mapping before substitution.