LTC2662CUH-16#PBF

Overview

The LTC2662CUH-16#PBF is a five-channel, 16-bit current-source digital-to-analog converter 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 (VDDx) operating between 2.85V and 33V. The device includes an internal 1.25V reference with 10ppm/°C max temperature coefficient or accepts external references. It utilizes a 3-wire SPI/Microwire-compatible serial interface with clock rates up to 50MHz and 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 output 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 separate voltage supply per output channel.
• Integrated precision 1.25 V reference (10 ppm/°C max) with option for external reference input.
• SPI/Microwire-compatible 3-wire serial interface supporting logic levels down to 1.71 V 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 suffix 'CUH' corresponds to the commercial temperature range (0°C to 70°C) and the '16' indicates 16-bit resolution. Confirm the '#PBF' designation ensures lead-free RoHS compliance. Cross-reference the specific lot date code against manufacturer reliability reports if long-term stability is critical for the application environment.

Selection Notes

Select this part when five independent high-current outputs are required with precise scaling. Ensure the load voltage does not exceed 32V and that the supply difference (V+ – V–) remains within 33V limits. Consider the thermal resistance characteristics and PCB layout requirements for heat dissipation, especially when operating near the maximum current ranges or junction temperatures.

Part Context

This component belongs to the LTC2662 family of SoftSpan DACs. Variants include the LTC2662I (industrial temp) and LTC2662H (extended temp). The CUH suffix specifically denotes the commercial temperature grade. Related evaluation tools include the DC2692A-A demonstration circuit designed for testing the LTC2662-16 performance characteristics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and electrical specifications against other multi-channel DACs if direct replacement is necessary.