AD5321BRMZ

Digital To Analog Converters Overview

The AD5321BRMZ is a single-channel, 12-bit buffered voltage-output digital-to-analog converter (DAC) from Analog Devices. It operates on a single supply ranging from 2.5 V to 5.5 V and consumes 120 μA at 3 V in normal mode. The device features an I²C-compatible 2-wire serial interface supporting clock rates up to 400 kHz. Key electrical specifications include a settling time of 8 μs (typical), a slew rate of 0.7 V/μs, and rail-to-rail output swing capability. The B version supports an industrial temperature range of -40°C to +105°C.

Digital To Analog Converters Feature Summary

• 12-bit resolution with guaranteed monotonicity by design over all codes
• I²C-compatible 2-wire serial interface with data readback capability
• On-chip rail-to-rail output buffer amplifier with 0.7 V/μs slew rate
• Power-on reset ensures DAC output powers up to 0 V

Digital To Analog Converters Applications

• Portable battery-powered instruments
• Digital gain and offset adjustment
• Programmable voltage and current sources
• Programmable attenuators

Digital To Analog Converters Procurement Notes

Verify the specific package variant required, as the AD5321 series is available in both 6-lead SOT-23 and 8-lead MSOP packages. Confirm that the B suffix corresponds to the -40°C to +105°C industrial temperature range. Ensure the system design accommodates the external pull-up resistors required for the bidirectional SDA line on the I²C bus.

Digital To Analog Converters Selection Notes

Select the AD5321BRMZ when a 12-bit resolution is necessary for precise voltage control. This component is suitable for applications requiring low power consumption, such as battery-operated devices, due to its 120 μA active current draw. Consider the 8-lead MSOP package if hardware address pins A0 and A1 are needed to support multiple devices on a single bus.

Digital To Analog Converters Part Context

The AD5321BRMZ belongs to the AD5301/AD5311/AD5321 family of nanoDACs. These devices share a common architecture featuring resistor-string conversion and an integrated output buffer. The primary distinction within the family is the resolution: the AD5301 offers 8 bits, the AD5311 offers 10 bits, and the AD5321 provides 12 bits.

Digital To Analog Converters Replacement Considerations

For direct pin-compatible replacements within the same family, consider the AD5311BRMZ for 10-bit resolution or the AD5301BRMZ for 8-bit resolution. Verify that the alternative part number matches the required package type (MSOP or SOT-23) and temperature grade.