LTC2672HUH-16#TRPBF

Overview

The LTC2672HUH-16#TRPBF is a five-channel, 16-bit current source digital-to-analog converter (DAC) from Analog Devices Inc. It features per-channel programmable output current ranges of up to 300 mA and flexible 2.1 V to VCC output supply voltages. The device includes an internal precision 1.25 V reference with a maximum temperature coefficient of 10 ppm/°C for the LFCSP package. Key specifications include a settling time of 21.1 μs at full scale, ±0.45 LSB DNL, and ±12 LSB INL. It operates on a 2.85 V to 5.5 V analog supply and supports SPI-compatible interfaces.

Feature Summary

• Five-channel 16-bit resolution with per-channel programmable current ranges (3.125 mA to 300 mA)
• Internal precision 1.25 V reference with 10 ppm/°C max temperature coefficient
• Flexible single or dual-supply operation with dedicated VDDx pins per channel
• 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 #TRPBF suffix indicates tape-and-reel packaging when sourcing this component. Confirm the H-grade designation ensures guaranteed operation across the extended -40°C to +125°C temperature range. Cross-reference the specific lot date code against manufacturer reliability data if required for long-term deployment stability.

Selection Notes

Select the LTC2672HUH-16#TRPBF for designs requiring high-precision current control across multiple channels. Ensure the system power budget accommodates the VDDx supply requirements, which range from 2.1 V to VCC depending on the selected current span. Verify that the PCB layout supports the thermal dissipation needs of the LFCSP-32 package under maximum load conditions.

Part Context

This part belongs to the LTC2672 family of SoftSpan DACs, which also includes 12-bit variants and WLCSP package options. The HUH-16 suffix specifically denotes the 16-bit resolution version housed in a 32-lead Lead Frame Chip Scale Package (LFCSP). It serves as a high-compliance current source alternative to voltage-output DACs in precision analog applications.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2672-12 variants for reduced resolution needs. Other multi-channel current DACs from Analog Devices may require schematic modifications due to differing interface protocols or supply configurations.