LTC2664HUH-12#TRPBF

Overview

The LTC2664HUH-12#TRPBF is a quad-channel, 12-bit digital-to-analog converter featuring SoftSpan technology for independently programmable output ranges up to ±10V. It integrates a precision 2.5V reference with a maximum temperature coefficient of 10ppm/°C and built-in rail-to-rail output buffers capable of driving ±10mA. The device operates on analog supplies from ±4.5V to ±15.75V (or single supply) and utilizes a 3-wire SPI/Microwire-compatible serial interface supporting clock rates up to 50MHz. Packaged in a 32-lead 5mm × 5mm QFN, it is rated for an extended operating temperature range of –40°C to 125°C.

Feature Summary

• Quad-channel 12-bit DACs with five independently programmable output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V
• Integrated precision 2.5V reference with 10ppm/°C maximum temperature coefficient
• Built-in rail-to-rail output buffers guaranteeing ±10mA drive capability
• A/B toggle capability via dedicated TGP pin or software command for dual-register updates

Applications

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

Procurement Notes

Verify the H suffix indicates the automotive temperature grade (–40°C to 125°C) and the TRPBF suffix denotes tape and reel packaging. Confirm that the specific lot markings align with Analog Devices lead-free standards. Ensure compatibility with the required IOVCC logic levels, which support operation down to 1.71V.

Selection Notes

Select this model when high-temperature stability is required alongside multi-range flexibility. The 12-bit resolution offers a balance between cost and performance for applications not requiring 16-bit precision. Ensure the system design accommodates the 32-lead QFN footprint and provides adequate thermal dissipation given the junction temperature limits.

Part Context

This component belongs to the LTC2664 family of SoftSpan DACs. The HUH designation specifies the 32-lead QFN package and the H temperature grade. It shares architectural similarities with the LTC2664-16 variant but provides 12-bit resolution, resulting in different linearity specifications such as ±0.2 LSB INL compared to the 16-bit version's wider tolerance.

Replacement Considerations

Direct replacements within the same family include LTC2664IUH-12#TRPBF for industrial temperature ranges or LTC2664CUH-12#TRPBF for commercial ranges. Verify that the substitute part maintains the same QFN package dimensions and pinout configuration to ensure board-level compatibility.