LTC2664CUH-12#TRPBF

Overview

The LTC2664CUH-12#TRPBF is a quad-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing five independently programmable output ranges up to ±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 of ±4.5V to ±15.75V and a digital supply of 1.71V to VCC. Key electrical parameters include a settling time of 15.5µs for the ±10V range, integral nonlinearity (INL) of ±0.2 LSB, and differential nonlinearity (DNL) of ±0.05 LSB. The component utilizes a 3-wire SPI/Microwire interface and is housed in a 32-lead QFN package.

Feature Summary

• Quad-channel 12-bit resolution with independently programmable SoftSpan output ranges (0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V)
• Integrated precision reference with 10ppm/°C max temperature coefficient and external reference capability
• Rail-to-rail output buffers driving ±10mA with guaranteed monotonicity over temperature
• A/B toggle capability via dedicated pin or software command for dual-register updates

Applications

• Optical networking systems
• Instrumentation and measurement equipment
• Data acquisition systems
• Automatic test equipment
• Process control and industrial automation

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging format containing 2500 pieces. Confirm the 'C' grade designation matches the required commercial operating temperature range of 0°C to 70°C. Ensure the 12-bit resolution variant aligns with system linearity requirements compared to the 16-bit version.

Selection Notes

Select this model when four independent voltage outputs are required with high precision and wide dynamic range. The 12-bit resolution offers a balance between performance and cost for applications not requiring 16-bit accuracy. Consider the external reference option if lower noise or different voltage levels are needed beyond the internal 2.5V reference capabilities.

Part Context

This part belongs to the LTC2664 family of SoftSpan DACs. The 'CUH' prefix indicates the Commercial temperature grade (-0°C to +70°C) and the 32-Lead QFN package type. The '#TRPBF' suffix denotes Lead-Free construction and Tape & Reel packaging. It shares the same core architecture as the Industrial (I) and Automotive (H) grades but differs in temperature specifications.

Replacement Considerations

Direct replacements within the same package and functionality include the LTC2664IUH-12#TRPBF for extended industrial temperature ranges (-40°C to 85°C). For higher resolution needs, the LTC2664CUH-16#TRPBF is available, though it exhibits different linearity characteristics (±2.2 LSB INL vs ±0.2 LSB).