AD5689BCPZ-RL7

Overview

The AD5689BCPZ-RL7 is a dual, 16-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It operates on a single 2.7 V to 5.5 V supply with 1.8 V logic compatibility via the VLOGIC pin. The device features a user-selectable gain of 1 or 2, allowing full-scale outputs of 2.5 V or 5 V respectively. Key electrical specifications include a maximum integral nonlinearity (INL) of ±2 LSB, a settling time of 5 µs, and a low power consumption of 3.3 mW at 3 V. It utilizes a versatile 50 MHz SPI interface with readback capabilities.

Feature Summary

• Dual-channel 16-bit resolution with string DAC architecture
• High relative accuracy: ±2 LSB maximum INL at 16 bits
• User-selectable gain (GAIN pin) for 0–VREF or 0–2×VREF output spans
• Power-on reset circuit with RSTSEL pin for zero-scale or midscale initialization

Applications

• Optical transceivers
• Base station power amplifiers
• Process control PLC I/O cards
• Industrial automation systems
• Data acquisition systems

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet. Confirm the package type is LFCSP-16 and the suffix RL7 indicates reel packaging. Ensure the operating environment stays within the specified -40°C to +105°C temperature range and that supply voltages do not exceed absolute maximum ratings to prevent damage.

Selection Notes

Select this component when dual-channel high-precision analog output is required in a compact form factor. The AD5689 is suitable for applications needing low glitch impulse (0.5 nV-sec) and rail-to-rail output drive capability up to 20 mA. Consider the external reference requirement if higher precision than internal variations allows, though it supports VREF = VDD for simplified designs.

Part Context

This part belongs to the AD5689/AD5687 nanoDAC+ family, which offers low power and high accuracy. The AD5689 provides 16-bit resolution, whereas the AD5687 variant offers 12-bit resolution. Both share similar pinouts and interfaces but differ in performance metrics such as INL and offset error. The RL7 suffix denotes tape and reel packaging for automated assembly.

Replacement Considerations

The AD5687BCPZ-RL7 is a compatible alternative offering 12-bit resolution with similar package and interface characteristics. For single-channel requirements, consider the AD5693 series, though it uses an I2C interface instead of SPI. Verify that any substitute meets the specific INL and settling time requirements of the original design.