AD5694ARUZ-RL7

Overview

The AD5694ARUZ-RL7 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 for full-scale outputs of 2.5 V or 5 V. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 7 µs, and a low glitch impulse of 0.5 nV·sec. 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 up to 400 kHz
• User-selectable gain (GAIN pin) for 0–VREF or 0–2×VREF output spans
• Power-on reset circuit with RSTSEL pin for zero scale or midscale initialization

Applications

• Digital gain and offset adjustment
• 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 performance parameters like INL vary between grades. Confirm that the -RL7 suffix corresponds to the reel packaging format. Ensure the design supports the 1.8 V logic compatibility via the VLOGIC pin if interfacing with lower voltage microcontrollers.

Selection Notes

Select this component when four independent 12-bit channels are needed with high relative accuracy. The AD5694 is suitable for applications requiring rail-to-rail output drive capability and low power consumption. Consider the external reference input if higher precision than the internal options allows, though this specific part relies on an external VREF pin.

Part Context

This part belongs to the AD569x series, which also includes the 16-bit AD5696 and 14-bit AD5695 variants. All share the same functional architecture, pinout, and software commands, differing primarily in resolution and accuracy specifications. The AD5694 provides a cost-effective solution where 12-bit precision is sufficient.

Replacement Considerations

The AD5694RARUZ is a compatible alternative within the same family, offering identical functionality but potentially different grading or packaging options. Verify that any substitute maintains the 16-lead TSSOP footprint and I2C interface compatibility.