LTC2664IUH-16#TRPBF

Overview

The LTC2664IUH-16#TRPBF is a quad-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing five independently programmable output ranges up to ±10V: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V. The device includes an integrated precision reference with a maximum temperature coefficient of 10ppm/°C and built-in rail-to-rail output buffers capable of driving ±10mA. It operates on analog supplies ranging from 4.5V to 15.75V for V+ and -15.75V to 0V for V–, with a digital I/O supply of 1.71V to 5.5V. The component utilizes a 3-wire SPI/Microwire interface operating at clock rates up to 50MHz.

Feature Summary

• Quad 16-bit resolution with independently programmable SoftSpan output ranges up to ±10V
• Integrated precision reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers guaranteeing monotonicity and ±10mA drive capability
• A/B toggle capability via dedicated pin or software command

Applications

• Optical networking systems
• Precision instrumentation
• Data acquisition systems
• Automatic test equipment
• Process control and industrial automation

Procurement Notes

Verify the #TR suffix indicates a tape and reel packaging configuration containing 2500 pieces. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the specific ordering code matches the required 16-bit resolution variant within the LTC2664 family.

Selection Notes

Select this part when four independent channels with high accuracy are required in a compact QFN package. The SoftSpan feature allows flexible voltage range selection without hardware changes. Verify that the system supports the necessary bipolar or single-supply configurations for V+ and V– rails. Check if the internal reference meets noise and drift requirements or if an external reference is needed.

Part Context

This component belongs to the LTC2664 family of SoftSpan DACs. The IUH-16 suffix specifies the Industrial temperature grade, 32-lead QFN package, and 16-bit resolution. The #TRPBF suffix denotes lead-free construction and tape-and-reel shipping. Other variants include 12-bit resolution and Commercial/Automotive temperature grades.

Replacement Considerations

Direct replacements within the same family include LTC2664IUH-12#TRPBF for 12-bit resolution or LTC2664HUH-16#TRPBF for automotive temperature range. Cross-family alternatives like LTC2634 or LTC2655 offer different interfaces or channel counts but require schematic review.