LTC2672HCB-16#TRPBF

Overview

The LTC2672HCB-16#TRPBF is a five-channel, 16-bit current source digital-to-analog converter (DAC) from Analog Devices Inc. It provides high-compliance outputs with a guaranteed maximum dropout voltage of 0.6 V at 200 mA. Each channel features eight programmable current ranges, supporting full-scale outputs up to 300 mA. The device integrates a precision 1.25 V reference and an analog multiplexer for monitoring output voltages and currents. Channels can be paralleled for combined outputs up to 1.5 A or ultrafine adjustments. It operates on a single supply from 2.85 V to 5.5 V and supports flexible dual-supply configurations.

Feature Summary

• Five-channel 16-bit resolution with per-channel programmable current ranges: 300 mA, 200 mA, 100 mA, 50 mA, 25 mA, 12.5 mA, 6.25 mA, and 3.125 mA
• Guaranteed low dropout voltage of 0.6 V at 200 mA output current
• Integrated precision 1.25 V reference with maximum temperature coefficient of 10 ppm/°C
• Analog multiplexer for monitoring channel voltages and currents via MUX pin

Applications

• Tunable lasers
• Semiconductor optical amplifier biasing
• Resistive heaters
• Current mode biasing

Procurement Notes

Verify the specific package type associated with the HCB suffix against official documentation, as it may indicate a wafer-level chip scale package (WLCSP). Confirm that the operating environment remains within the specified -40°C to +125°C range. Ensure proper PCB thermal design is implemented due to power dissipation characteristics. Check for any recent product change notifications regarding manufacturing updates.

Selection Notes

Select this component when multiple independent current sources are required in a compact form factor. The 16-bit resolution ensures high precision for sensitive applications. Consider the parallel capability if combined currents exceeding individual channel limits are needed. Verify that the load termination requirements align with the specified dropout voltages across all selected current ranges.

Part Context

This part belongs to the LTC2672 family, which includes both 12-bit and 16-bit variants. The HCB suffix typically denotes a specific package configuration, potentially the 36-ball WLCSP. Other variants include LFCSP packages. The family shares core functionalities such as the SPI-compatible interface and internal reference options, differing primarily in resolution and packaging.

Replacement Considerations

Direct replacements within the same family include other LTC2672 variants with different resolutions or packages. Cross-family comparisons should focus on channel count, resolution, and current compliance. Verify pin compatibility and software register mapping before substitution.