AD5694BCPZ-RL7

Overview

The AD5694BCPZ-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 provides high relative accuracy with a maximum Integral Nonlinearity (INL) of ±1 LSB for B grade. Key specifications include a settling time of 5 µs, low power consumption of 1.8 mW at 3 V, and a total unadjusted error (TUE) of ±0.1% FSR. It is housed in a compact 3 mm × 3 mm, 16-lead LFCSP package.

Feature Summary

• Quad 12-bit resolution with ±1 LSB INL (B Grade)
• I2C-compatible 2-wire serial interface supporting up to 400 kHz
• User-selectable gain of 1 or 2 via GAIN pin
• Power-on reset circuit with RSTSEL pin for zero/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 metrics like INL vary between grades. Confirm that the LFCSP-16 package meets your PCB layout constraints. Ensure the I2C bus timing requirements are compatible with the master controller. Check for moisture sensitivity level (MSL) handling requirements during assembly.

Selection Notes

Select this component when a quad-channel DAC with high precision and low power is needed. The B grade offers tighter accuracy specifications compared to A grade. Consider the external reference voltage range; the device supports gains of 1 or 2, allowing output spans of 0 to VREF or 0 to 2×VREF. Ensure the logic voltage (VLOGIC) is compatible with the host microcontroller.

Part Context

This part belongs to the AD5696/AD5694 family, which shares functional similarities but differs in resolution. The AD5696 is the 16-bit counterpart, while the AD5694 provides 12-bit resolution. Both utilize the same package options and interface protocols, allowing for potential design flexibility within the same product line.

Replacement Considerations

Direct replacements within the same family include the AD5696 series for higher resolution needs. Other nanoDAC+ devices with I2C interfaces may be considered if channel count or resolution requirements differ. Verify pin compatibility and electrical specifications before substituting.