LTC2672CUH-12#PBF

Overview

The LTC2672CUH-12#PBF is a five-channel, 12-bit current source digital-to-analog converter (DAC) from Analog Devices. It features programmable output current ranges of 300 mA, 200 mA, 100 mA, 50 mA, 25 mA, 12.5 mA, 6.25 mA, and 3.125 mA per channel. The device includes an internal precision reference with a maximum temperature coefficient of 10 ppm/°C in the LFCSP package. It operates on analog supply voltages from 2.85 V to 5.5 V and supports flexible single- or dual-supply configurations. Each channel has a dedicated supply pin allowing operation from 2.1 V to VCC.

Feature Summary

• Five independent channels with selectable full-scale currents up to 300 mA
• 12-bit resolution with guaranteed monotonicity across all ranges
• Internal 1.25 V reference with 10 ppm/°C maximum temperature coefficient
• Integrated analog multiplexer for monitoring channel voltages and currents

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the CUH-12 designation corresponds to the commercial temperature range and 12-bit resolution variant within the LFCSP package. Cross-reference the manufacturer's ordering guide to ensure availability and correct revision level.

Selection Notes

Select this component when multi-channel current control with high compliance is required. Ensure the application voltage headroom accommodates the minimum 2.1 V dropout requirement. Verify that the SPI interface timing meets the system clock constraints, as the device supports clock rates up to 50 MHz depending on supply voltage levels.

Part Context

This part belongs to the LTC2672 family, which also offers 16-bit resolution variants and WLCSP packaging options. The CUH-12#PBF specifically denotes the 12-bit version housed in a 32-lead Lead Frame Chip Scale Package (LFCSP). Other family members include the LTC2672-16 for higher precision applications.

Replacement Considerations

Direct substitutes within the same family include the LTC2672CUH-16#PBF for 16-bit resolution requirements. For different package types, the WLCSP versions are available but require distinct footprint designs. No external cross-manufacturer equivalents are documented.