LTC2664IUH-12#TRPBF

Overview

The LTC2664IUH-12#TRPBF is a quad-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices. It features SoftSpan technology allowing independently programmable output ranges of 0V to 5V, 0V to 10V, ±2.5V, ±5V, or ±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 and a digital supply from 1.71V to VCC+0.3V. Key electrical specifications 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 operating at clock rates up to 50MHz.

Feature Summary

• Quad-channel 12-bit resolution with independently programmable SoftSpan output ranges up to ±10V
• Integrated precision reference with 10ppm/°C maximum temperature coefficient
• Rail-to-rail output buffers guaranteeing monotonicity and ±10mA drive capability
• 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 #TRPBF suffix indicates a tape and reel packaging format containing 2500 pieces. Confirm the 'I' designation corresponds to the industrial temperature grade of –40°C to 85°C. Ensure the ordering information matches the specific 12-bit resolution variant rather than the 16-bit version. Cross-reference the manufacturer part number with official distributor catalogs to confirm current availability status.

Selection Notes

Select this model when four independent voltage outputs with high accuracy are required in a compact QFN package. The 12-bit resolution offers a balance between performance and cost compared to the 16-bit variant. Consider the SoftSpan feature if system design requires flexible output scaling without external resistor networks. Verify that the application supports the required analog supply voltages and SPI communication speeds.

Part Context

This component belongs to the LTC2664 family of SoftSpan DACs. The 'UH' suffix denotes the 32-lead (5mm × 5mm) plastic QFN package. The '12' indicates 12-bit resolution, distinguishing it from the 16-bit models. The 'I' specifies the industrial temperature range. This specific part number represents the tape and reel version of the industrial-grade quad-channel DAC.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When evaluating alternatives, ensure compatibility with the 32-lead QFN footprint, 12-bit resolution, and SoftSpan functionality. Verify that any replacement maintains the same supply voltage requirements and serial interface timing characteristics.