AD5675BCPZ-RL

Overview

The AD5675BCPZ-RL is an octal, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a single 2.7 V to 5.5 V supply and features a user-selectable gain of 1 or 2 via the GAIN pin or bit, providing full-scale outputs of VREF or 2 × VREF respectively. The device includes a power-on reset circuit and RSTSEL pin to ensure outputs start at zero or midscale. It utilizes a versatile 2-wire I2C-compatible serial interface with clock rates up to 400 kHz and supports 1.8 V logic compatibility through the VLOGIC pin.

Feature Summary

• Octal 16-bit resolution with high relative accuracy (INL ±3 LSB max for B Grade)
• User-selectable gain of 1 or 2 (GAIN pin/bit) for flexible output ranges
• I2C-compatible serial interface with 400 kHz clock rate and 1.8 V logic support
• Power-down mode reduces current consumption to 1 µA typical

Applications

• Optical transceivers
• Base station power amplifiers
• Process control (PLC input/output cards)
• Industrial automation
• Data acquisition systems

Procurement Notes

Verify the B grade specification for INL and offset errors against system requirements. Confirm the LFCSP package thermal management strategy, as performance depends on PCB design. Ensure the external pull-up resistor on the SDA line matches the VLOGIC supply voltage for proper I2C communication.

Selection Notes

Select the AD5675BCPZ-RL when eight independent 16-bit channels are required in a compact footprint. Choose this part over the AD5675R if an external reference is preferred or already available, as this variant lacks an internal reference. Verify that the capacitive load stability limits (2 nF to infinity, 10 nF to 1 kΩ) accommodate the application's output loading.

Part Context

This component belongs to the AD5675 nanoDAC+ family, which offers octal configurations with I2C interfaces. The 'B' suffix denotes the B grade accuracy class, while 'CPZ' indicates the 20-lead LFCSP package. The '-RL' suffix specifies reel packaging for automated surface-mount assembly.

Replacement Considerations

The AD5675ACPZ-RL is a compatible alternative offering A grade accuracy specifications. For applications requiring an integrated internal reference, the AD5675RARUZ or AD5675ARUZ-REEL7 variants provide a built-in 2.5V reference.