LTC2662HUH-12#TRPBF

Overview

The LTC2662HUH-12#TRPBF is a five-channel, 12-bit current-source digital-to-analog converter (DAC) from Analog Devices. It provides high-compliance outputs with guaranteed 1V dropout at 200mA and supports load voltages up to 32V. Each channel features independent supply pins and programmable output ranges from 3.125mA to 300mA. The device includes an internal 1.25V precision reference with 10ppm/°C temperature coefficient, or accepts external references. It operates on a 3-wire SPI/Microwire-compatible interface with logic levels as low as 1.71V. The component is housed in a 5mm × 5mm 32-lead QFN package.

Feature Summary

• Five channels with per-channel programmable current ranges: 300mA, 200mA, 100mA, 50mA, 25mA, 12.5mA, 6.25mA, and 3.125mA
• Flexible supply voltage range of 2.85V to 33V with separate analog supply per output channel
• Internal 1.25V reference with 10ppm/°C max temperature coefficient or external reference input option
• SPI/Microwire-compatible 3-wire serial interface operating at clock rates up to 50MHz

Applications

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

Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging for automated assembly. Confirm the H grade ensures operation across the full -40°C to +125°C temperature range. Ensure the 12-bit resolution variant matches system requirements compared to the 16-bit version. Check that the distributor source provides valid lot traceability and RoHS compliance documentation.

Selection Notes

Select this part when independent channel supplies are required for each DAC output. The 12-bit resolution offers a balance between cost and performance for applications not requiring 16-bit precision. Consider the 300mA maximum output capability and the need for external resistors if custom full-scale adjustments are desired via the FSADJ pin. Evaluate thermal dissipation requirements given the 5mm x 5mm QFN package size.

Part Context

This component belongs to the LTC2662 family of SoftSpan DACs. The HUH suffix denotes the industrial/high-temperature grade (-40°C to +125°C) and the 32-lead QFN package. The 12 designation specifies 12-bit resolution, distinguishing it from the 16-bit LTC2662-16 variants. The TRPBF suffix confirms tape-and-reel packaging with lead-free finish.

Replacement Considerations

LTC2662IUH-12#PBF offers identical electrical specifications but with an industrial temperature range (-40°C to +85°C). LTC2662CUH-12#PBF provides commercial grade operation (0°C to +70°C). For higher resolution needs, consider the LTC2662-16 series. Verify pin compatibility and software register definitions remain consistent across these variants.