LTC2672CUH-12#TRPBF

Overview

The LTC2672CUH-12#TRPBF 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 for the LFCSP package. It operates on a single or dual supply, with flexible output supply voltages ranging from 2.1 V to VCC. The DAC utilizes a 3-wire SPI-compatible serial interface operating at clock rates up to 50 MHz.

Feature Summary

• Five independent channels with selectable full-scale current outputs up to 300 mA
• Internal 1.25 V precision reference with 10 ppm/°C maximum temperature coefficient
• Analog multiplexer for monitoring channel voltages and currents
• Channels can be paralleled for combined outputs up to 1.5 A

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the CUH-12 designation corresponds to the commercial temperature range and 12-bit resolution variant. Ensure compatibility with the 32-lead lead frame chip scale package (LFCSP) footprint during procurement planning.

Selection Notes

Select this component for applications requiring multiple high-current analog outputs with precise control. The 12-bit resolution provides adequate granularity for many industrial and optical control systems. Consider the parallel capability if higher total current than 300 mA per channel is required. Verify that the internal reference meets the system's accuracy requirements before opting for external references.

Part Context

This part belongs to the LTC2672 family of SoftSpan DACs. The CUH-12 suffix denotes the commercial temperature grade and 12-bit resolution version. The TRPBF suffix typically indicates tape and reel packaging with lead-free finish. Other variants in the family include 16-bit resolution options and different package types such as WLCSP.

Replacement Considerations

Direct replacements within the same family include the LTC2672CUH-16#TRPBF for 16-bit resolution. For single-channel applications, consider the AD5422 or AD5412 series. Ensure any substitute maintains the 300 mA current capability and compatible SPI interface timing.