AD5695RARUZ

Overview

The AD5695RARUZ is a quad, 14-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and a 2-wire I2C-compatible serial interface. The device operates on a single 2.7 V to 5.5 V supply and includes a GAIN pin for selectable full-scale outputs of 2.5 V or 5 V. Key performance metrics include ±1 LSB maximum INL, 5 µs settling time, and 0.5 nV-sec glitch impulse. It supports power-down modes reducing current to 4 µA and offers hardware reset options.

Feature Summary

• Quad 14-bit resolution with ±1 LSB maximum relative accuracy (INL).
• Integrated 2.5 V reference with 2 ppm/°C typical temperature coefficient.
• I2C serial interface supporting clock rates up to 400 kHz.
• Selectable gain configuration via GAIN pin for 2.5 V or 5 V full-scale output.

Applications

• Optical transceivers
• Base-station power amplifiers
• Process control PLC I/O cards
• Industrial automation systems

Procurement Notes

Verify the package type matches the specific suffix; 'RUZ' indicates a 16-lead TSSOP package. Confirm the grade (A or B) required for the application's accuracy specifications. Check for RoHS compliance status as indicated in the ordering guide. Ensure the design accounts for the exposed pad connection to ground if using the LFCSP variant, though this part uses TSSOP.

Selection Notes

Select the AD5695RARUZ when 14-bit resolution and low drift are required. Choose Grade A for tighter INL specifications (±0.5 LSB) or Grade B for standard accuracy (±1 LSB). Use the GAIN pin to set the output span based on the reference voltage. Consider the power-down feature for applications requiring low standby current consumption.

Part Context

The AD5695RARUZ belongs to the AD5696R/AD5695R/AD5694R family, which shares identical pinouts and functionality but differs in resolution. The AD5696R provides 16-bit resolution, while the AD5694R offers 12-bit resolution. All variants support the same I2C interface and internal reference options.

Replacement Considerations

The AD5695RBRUZ-RL7 is a reel version of the same component. For different resolutions within the same family, consider the AD5696R (16-bit) or AD5694R (12-bit). External reference versions like the AD5695 are available if the internal reference is not desired.

FAQ

What is the function of the GAIN pin?

The GAIN pin sets the amplifier gain. Connecting it to GND results in a full-scale output of 2.5 V (Gain = 1), while connecting it to VLOGIC results in a full-scale output of 5 V (Gain = 2).

How does the RSTSEL pin affect power-up behavior?

The RSTSEL pin determines the DAC output state at power-up. Tying it to GND powers up the outputs to zero scale, while tying it to VLOGIC powers them up to midscale.

What is the maximum I2C clock speed?

The device supports a 2-wire serial interface with clock rates up to 400 kHz.