LTC2656IFE-L12#TRPBF

Overview

The LTC2656IFE-L12#TRPBF is an octal, 12-bit digital-to-analog converter (DAC) from Analog Devices Inc. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and operates on a single 2.7V to 5.5V supply. The device provides rail-to-rail output buffers and guarantees monotonicity over the full operating temperature range. It communicates via a 4-wire SPI/MICROWIRE compatible serial interface supporting clock rates up to 50MHz. The part is housed in a 20-lead thermally enhanced TSSOP package.

Feature Summary

• Octal architecture with 8 independent 12-bit DAC channels
• Integrated precision reference with 10ppm/°C max temperature coefficient
• Rail-to-rail output buffers guaranteed monotonic over temperature
• SPI/MICROWIRE compatible 4-wire serial interface with 50MHz clock rate

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Instrumentation
• Automatic Test Equipment
• Automotive

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format as specified in the manufacturer's documentation. Confirm the specific electrical grade and temperature range requirements for the application environment before finalizing procurement.

Selection Notes

Select this model for applications requiring eight simultaneous analog outputs with high accuracy. The -L suffix indicates a 2.5V full-scale output span when using the internal reference. Ensure the system power supply remains within the 2.7V to 5.5V range for specified performance.

Part Context

This component belongs to the LTC2656 family of octal DACs. Variants exist with 16-bit resolution or different full-scale voltage options (e.g., -H for 4.096V). The I-grade designation specifies an industrial temperature range of –40°C to 85°C, distinguishing it from commercial grade parts.

Replacement Considerations

Compatible substitutes include other members of the LTC2656 family such as the LTC2656IUFD-L12#TRPBF, which shares identical electrical specifications but utilizes a QFN package instead of TSSOP.

FAQ

What is the full-scale output voltage for the LTC2656-L variant?

The LTC2656-L has a full-scale output of 2.5V when operating with the integrated reference.

How does the PORSEL pin affect power-on behavior?

If tied to GND, the DACs reset to zero-scale at power-up. If tied to VCC, they reset to mid-scale.

What is the maximum serial clock frequency?

The SPI/MICROWIRE compatible interface operates at clock rates up to 50MHz.