AD5667RBRMZ-2REEL7

Overview

The AD5667RBRMZ-2REEL7 is a dual-channel, 16-bit buffered voltage-output digital-to-analog converter (DAC) from the nanoDAC family. It integrates an on-chip 2.5 V reference with a temperature coefficient of 5 ppm/°C, enabling a full-scale output range of 0 V to 5 V. The device 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. Key specifications include ±1 LSB differential nonlinearity, ±12 LSB integral nonlinearity, and a settling time of 4 µs. It is housed in a 10-lead MSOP package.

Feature Summary

• Dual 16-bit resolution with integrated 2.5 V, 5 ppm/°C on-chip reference
• I²C-compatible serial interface with high-speed mode up to 3.4 MHz
• Rail-to-rail output swing with per-channel power-down capability
• Power-on reset ensures outputs initialize to 0 V

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 'REEL7' indicates tape-and-reel packaging when sourcing. Confirm the 'B' grade designation for the -40°C to +105°C industrial temperature range. Ensure the 'R' suffix is present to confirm the inclusion of the internal 2.5 V reference, as non-R versions require external references.

Selection Notes

Select this component over the AD5667 (non-R) if an internal reference is required to reduce external component count. Choose the MSOP package for space-constrained designs compared to the LFCSP option. Verify that the 3.4 MHz I²C speed requirement is met by checking bus capacitance limits, as high-speed mode performance depends on line loading.

Part Context

This part belongs to the AD56x7R nanoDAC family, which offers pin-compatible 12-bit (AD5627R) and 14-bit (AD5647R) variants. The AD5667R series distinguishes itself with 16-bit resolution and an integrated precision reference. The 'BRMZ' code specifies the B-grade temperature range and MSOP-10 package, while 'R' confirms the internal reference presence.

Replacement Considerations

The AD5667RBRMZ is a direct functional substitute without the reel suffix. For external reference applications, the AD5667BRMZ serves as a compatible alternative. Pin-compatible options within the same family include the AD5647RBRMZ (14-bit) and AD5627RBRMZ (12-bit).

FAQ

What is the maximum I²C clock frequency supported?

The device supports standard mode (100 kHz), fast mode (400 kHz), and high-speed mode (3.4 MHz).

How does the power-on reset function operate?

The internal power-on reset circuit ensures that both DAC outputs initialize to 0 V (zero scale) upon power-up until a valid write operation occurs.

Can the internal reference be disabled?

Yes, the internal reference is off at power-up by default. It can be enabled via a software write or used externally by applying a reference voltage to the VREFIN/VREFOUT pin.