AD5667BRMZ

Overview

The AD5667BRMZ is a dual, 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-compatible serial interface supporting standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes. The device includes hardware LDAC and CLR functions, per-channel power-down capabilities reducing current to 480 nA at 5 V, and a power-on reset circuit ensuring outputs start at 0 V. It guarantees monotonicity by design and utilizes a resistor string architecture with precision output amplifiers for rail-to-rail swing.

Feature Summary

• Dual 16-bit resolution with ±12 LSB maximum relative accuracy and ±1 LSB differential nonlinearity.
• I²C-compatible serial interface operating in standard, fast, and high-speed (3.4 MHz) modes.
• Per-channel power-down mode reduces consumption to 480 nA at 5 V with software-selectable loads.
• Power-on reset ensures DAC outputs initialize to 0 V until a valid write operation occurs.

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm package type and reference configuration. The BRMZ designation indicates a 10-lead MSOP package. Confirm whether the internal reference is enabled or disabled by default based on the 'R' suffix presence in the full part number, as this affects external component requirements.

Selection Notes

Select the AD5667BRMZ when dual 16-bit precision is required with minimal pin count. Ensure the application supports the 2.7 V to 5.5 V supply range. For designs requiring an internal reference, verify if the 'R' suffix variant is necessary, as the base AD5667 requires an external reference. Check I²C bus capacitance limits if operating in high-speed mode.

Part Context

The AD5667BRMZ belongs to the nanoDAC family, which offers low-power, small-footprint solutions. It shares pin compatibility with the 12-bit AD5627 and 14-bit AD5647 variants, allowing for design flexibility across different resolution requirements within the same package form factor.

Replacement Considerations

The AD5663 serves as a functional alternative with an external reference requirement. The AD5667RBRMZ provides an integrated 2.5 V reference option. Verify pinout compatibility and register mapping before substitution.