AD5671RBCPZ-RL

Overview

The AD5671RBCPZ-RL is an octal, 12-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It features a low-drift 2.5 V internal reference with a typical temperature coefficient of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device incorporates a user-selectable gain of 1 or 2, enabling full-scale outputs of 2.5 V or 5 V respectively. It utilizes a 400 kHz I²C-compatible serial interface and includes a power-on reset circuit with an RSTSEL pin for configurable startup states. The component is housed in a 20-lead LFCSP package.

Feature Summary

• Octal architecture providing eight independent 12-bit DAC channels with buffered voltage outputs.
• Integrated 2.5 V reference with 2 ppm/°C drift and selectable amplifier gain (×1 or ×2).
• High relative accuracy with maximum INL of ±1 LSB and total unadjusted error of ±0.18% FSR.
• I²C serial interface supporting 400 kHz clock speeds with 1.8 V logic compatibility.

Applications

• Optical transceivers requiring multi-channel signal generation.
• Base station power amplifiers for bias control.
• Process control PLC input/output cards.
• Industrial automation systems.
• Data acquisition systems.

Procurement Notes

Verify the specific suffix 'BCPZ' corresponds to the 20-lead LFCSP package variant as defined in the manufacturer's ordering guide. Confirm that the internal reference is enabled by default for the intended application design. Ensure the I²C address configuration via A0 and A1 pins aligns with the system bus topology.

Selection Notes

Select this component when multiple isolated analog outputs are required within a compact footprint. The integrated reference eliminates external precision components, reducing board space. Verify that the load impedance requirements fall within the specified resistive and capacitive limits to maintain stability and linearity specifications across the operating temperature range.

Part Context

This part belongs to the nanoDAC+ family, which integrates high-precision references and amplifiers into small packages. The AD5671R is the 12-bit I²C variant, while the AD5675R provides 16-bit resolution. Both share similar pinouts and functional blocks but differ in accuracy grades and static performance metrics.

Replacement Considerations

The AD5675R offers identical pinout and functionality with 16-bit resolution. For SPI interface requirements, consider the AD5676R series. External reference designs may utilize the AD5671 without the 'R' suffix if an external reference source is preferred over the integrated one.