AD5694BRUZ

Overview

The AD5694BRUZ is a quad, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) from the nanoDAC+ family. It features an I2C-compatible serial interface and operates on a single 2.7 V to 5.5 V supply. The device includes a user-selectable gain pin allowing full-scale outputs of 2.5 V or 5 V. Key performance metrics include a maximum Integral Nonlinearity (INL) of ±1 LSB, a settling time of 7 µs, and low power consumption of 1.8 mW at 3 V. It is housed in a 16-lead TSSOP package.

Feature Summary

• Quad 12-bit resolution with ±1 LSB maximum INL
• I2C-compatible 2-wire serial interface supporting 400 kHz clock rates
• User-selectable gain (1x or 2x) via GAIN pin for flexible output ranges
• Integrated power-on reset circuit with RSTSEL pin for zero/midscale initialization

Applications

• Digital gain and offset adjustment circuits
• Programmable attenuators
• Process control PLC I/O cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the specific grade (A or B) required for your application, as specifications such as INL and offset error vary between grades. Confirm the package type matches the design, as this model number corresponds to the TSSOP variant. Ensure the I2C address configuration via A0/A1 pins aligns with the system bus topology.

Selection Notes

Select the AD5694BRUZ when four independent 12-bit channels are needed with I2C connectivity. Choose the external reference version if the internal reference is not present; however, datasheet tables indicate the 'R' suffix denotes internal references while non-'R' denotes external. Verify that the load requirements do not exceed the 20 mA drive capability or the capacitive load stability limits of 2 nF without buffering.

Part Context

This component belongs to the AD5696/AD5694 nanoDAC+ family, which shares architectural similarities with the AD568x series but utilizes an I2C interface instead of SPI. It serves as the 12-bit counterpart to the 16-bit AD5696. The BRUZ suffix indicates the B-grade performance level and the TSSOP-16 packaging option.

Replacement Considerations

The AD5694RARUZ is a direct functional substitute within the same family, offering identical pinout and specifications but packaged in a tube rather than a reel. Other family members like the AD5696 offer higher resolution (16-bit) with similar interfaces.