LTC2662CUH-12#PBF

Overview

The LTC2662CUH-12#PBF is a five-channel, 12-bit current-source digital-to-analog converter manufactured by Analog Devices Inc. It features per-channel programmable output ranges from 3.125 mA to 300 mA and supports flexible supply voltages between 2.85 V and 33 V. The device guarantees 1 V dropout at 200 mA and includes an internal 1.25 V reference with a maximum temperature coefficient of 10 ppm/°C. It utilizes a 3-wire SPI serial interface operating up to 50 MHz and is housed in a 5 mm × 5 mm 32-lead QFN package.

Feature Summary

• Five independent channels with programmable current ranges: 300 mA, 200 mA, 100 mA, 50 mA, 25 mA, 12.5 mA, 6.25 mA, and 3.125 mA
• Flexible supply voltage range of 2.85 V to 33 V with guaranteed 1 V dropout at 200 mA
• Internal precision 1.25 V reference (10 ppm/°C max) or external reference input option
• SPI/Microwire-compatible 3-wire serial interface with logic levels as low as 1.71 V

Applications

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

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature grade (0°C to +70°C). Confirm the 'H' suffix variant if operation up to +125°C is required. Ensure the '#PBF' designation corresponds to lead-free tape-and-reel packaging standards for surface-mount assembly.

Selection Notes

Select this component when five independent high-compliance current outputs are needed within a compact footprint. The 12-bit resolution is suitable for applications not requiring the full 16-bit precision of the -16 variant. Consider the separate VDDx supply pins for each channel to manage thermal dissipation and voltage headroom independently across different loads.

Part Context

This part belongs to the SoftSpan DAC family, characterized by its ability to support wide dynamic ranges and flexible power supplies. The LTC2662 series integrates analog multiplexers for monitoring voltages and currents, enhancing system diagnostics without external components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.