AD5694BRUZ-RL7

Overview

The AD5694BRUZ-RL7 is a quad, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) from the nanoDAC+ family by Analog Devices. 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 specifications include a maximum Integral Nonlinearity (INL) of ±1 LSB, offset error of ±1.5 mV, and gain error of ±0.1% FSR. It supports 400 kHz clock rates, offers per-channel power-down modes reducing current to 4 µA, and utilizes a TSSOP-16 package.

Feature Summary

• Quad 12-bit resolution with high relative accuracy (±1 LSB INL max)
• I2C-compatible 2-wire serial interface supporting up to 400 kHz
• User-selectable gain (1x or 2x) via GAIN pin for flexible output ranges
• Low power consumption with per-channel power-down mode (4 µA typical)

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 performance parameters like INL vary between grades. Confirm the package type matches the design; the suffix RUZ indicates a TSSOP-16 package, while LFCSP variants exist. Ensure the logic voltage (VLOGIC) range of 1.62 V to 5.5 V is compatible with the host microcontroller. Check for availability constraints as distribution status may vary.

Selection Notes

Select the AD5694BRUZ-RL7 when four independent 12-bit channels are needed with I2C connectivity. Choose this part over the AD5696 if 12-bit resolution is sufficient, as it offers lower cost and potentially lower power. Consider the gain setting: use Gain = 1 for 0–VREF output or Gain = 2 for 0–2×VREF. Ensure the external reference voltage does not exceed the supply voltage limits defined in the specifications table.

Part Context

This component belongs to the AD5696/AD5694 nanoDAC+ family, which shares functional similarities but differs in resolution and interface. The AD5694 is the 12-bit counterpart to the 16-bit AD5696. Both support I2C and feature similar power management and reset functionalities. The 'RL7' suffix typically denotes a reel packaging format, distinct from tube packaging options available for other variants in the series.

Replacement Considerations

The AD5696RBRUZ-RL7 is a direct pin-compatible alternative offering 16-bit resolution instead of 12-bit. Other family members like the AD5684RBRUZ provide SPI interfaces rather than I2C, requiring software changes. Verify that any replacement maintains the same package footprint (TSSOP-16) and electrical characteristics such as supply voltage and current consumption.