LTC2662HUH-16#PBF

Overview

The LTC2662HUH-16#PBF is a five-channel, 16-bit current-source digital-to-analog converter from Analog Devices. It features per-channel programmable output ranges of 300 mA, 200 mA, 100 mA, 50 mA, 25 mA, 12.5 mA, 6.25 mA, and 3.125 mA. The device supports flexible supply voltages from 2.85 V to 33 V with a guaranteed 1 V dropout at 200 mA. Each channel has a dedicated voltage supply pin. It includes an internal precision reference or external input option, SPI-compatible serial interface, and operates within a temperature range of -40°C to +125°C in a 5 mm × 5 mm 32-lead QFN package.

Feature Summary

• Five independent channels with 16-bit resolution and programmable current ranges up to 300 mA
• Flexible supply voltage support from 2.85 V to 33 V with separate supply pins per output
• Internal precision reference (1.25 V) with 10 ppm/°C max temperature coefficient
• SPI/Microwire-compatible 3-wire serial interface operating at clock rates up to 50 MHz

Applications

• Tunable Lasers
• Semiconductor Optical Amplifiers
• Resistive Heaters
• Current Mode Biasing
• Proportional Solenoid Drive

Procurement Notes

Verify the H suffix indicates extended temperature operation (-40°C to +125°C). Confirm the #PBF suffix denotes lead-free RoHS compliance. Ensure the datasheet revision matches the specific lot requirements for critical analog performance parameters.

Selection Notes

Select this part for applications requiring high compliance voltage and independent channel supplies. The H variant is necessary for industrial environments exceeding 85°C. Consider the 300 mA maximum output when sizing thermal management solutions for the QFN-32 package.

Part Context

This component belongs to the SoftSpan DAC family, designed for high-compliance current source applications. The HUH suffix specifies the industrial temperature grade and QFN-32 packaging. It complements other variants like the LTC2662IUH-16#PBF which covers the commercial temperature range.

Replacement Considerations

LTC2662IUH-16#PBF offers identical electrical specifications but is rated for -40°C to +85°C operation instead of the extended -40°C to +125°C range provided by the H suffix.