AD5321BRM-REEL7

Digital To Analog Converters Overview

The AD5321BRM-REEL7 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. The device features an on-chip rail-to-rail output buffer amplifier with a slew rate of 0.7 V/μs and a settling time of 8 μs for full-scale transitions. Communication is handled via a 2-wire I²C-compatible serial interface supporting clock rates up to 400 kHz. The part includes power-on reset functionality to ensure the output initializes to 0 V.

Digital To Analog Converters Feature Summary

• 12-bit resolution with guaranteed monotonicity by design
• I²C-compatible 2-wire serial interface with data readback capability
• Micropower operation: 120 μA at 3 V; power-down current as low as 50 nA
• On-chip rail-to-rail output buffer amplifier

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific package variant matches the required PCB footprint, as the AD5321 is available in both 6-lead SOT-23 and 8-lead MSOP packages. Ensure the ordering suffix corresponds to the desired tape-and-reel packaging configuration for automated assembly processes.

Digital To Analog Converters Selection Notes

Select this component when a single-channel, high-resolution voltage output is required with minimal power consumption. The internal reference derived from the power supply simplifies design by eliminating the need for external reference components. Verify that the system bus supports the 2-wire protocol and that the address pins (A0/A1) can be configured to avoid conflicts if multiple devices share the same bus.

Digital To Analog Converters Part Context

This part belongs to the AD5301/AD5311/AD5321 family of micropower DACs. The AD5321 specifically provides 12-bit resolution, whereas the AD5301 offers 8 bits and the AD5311 offers 10 bits. All members share identical pinouts, interfaces, and power characteristics, differing primarily in resolution and corresponding accuracy specifications.

Digital To Analog Converters Replacement Considerations

Direct functional replacements within the same family include the AD5301BRM and AD5311BRM, though these offer lower resolutions (8-bit and 10-bit, respectively). For higher resolution requirements, consider the AD5320 series, which utilizes an SPI interface rather than I²C.