AD5677RBCPZ-2

Overview

The AD5677RBCPZ-2 is a 16-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from Analog Devices. It integrates a 2.5 V internal reference with a typical temperature coefficient of 2 ppm/°C and features an I²C serial interface. The device operates on a single 2.7 V to 5.5 V supply and includes a gain select pin for full-scale outputs of 2.5 V or 5 V. It guarantees monotonicity by design and incorporates a power-on reset circuit that sets outputs to zero scale or midscale upon startup.

Feature Summary

• 16 channels in a compact 28-lead, 4 mm × 4 mm LFCSP package
• High relative accuracy with ±4 LSB maximum integral nonlinearity (INL)
• Integrated 2.5 V voltage reference with 2 ppm/°C typical temperature coefficient
• User-selectable gain of 1 or 2 via the GAIN pin

Applications

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

Procurement Notes

Verify the specific suffix '-2' against the manufacturer's ordering guide to confirm the power-on reset behavior. The datasheet indicates that the '-2' variant initializes DAC outputs to midscale, whereas the '-1' variant initializes to zero scale. Ensure this initialization state aligns with system safety requirements before procurement.

Selection Notes

Select the AD5677RBCPZ-2 when high channel density and 16-bit precision are required within a limited board area. The choice between the '-1' and '-2' suffixes depends on whether the application requires outputs to start at zero scale or midscale during power-up. Verify that the 400 kHz I²C interface speed meets the system's communication timing constraints.

Part Context

This component belongs to the nanoDAC+ family, which provides high channel density and integrated references. The AD5677R is the 16-bit counterpart to the AD5673R (12-bit). Both share the same pinout and functionality but differ in resolution and linearity specifications. The BCPS-2 designation specifies the 16-bit version with midscale power-on reset in the LFCSP package.

Replacement Considerations

The AD5673RBCPZ-2 serves as a lower-resolution alternative within the same package. For SPI interface compatibility, consider the AD5679R series, though it requires different software handling due to the distinct protocol.