LTC2655CGN-H12#TRPBF

Overview

The LTC2655CGN-H12#TRPBF is a quad, 12-bit digital-to-analog converter (DAC) featuring an integrated reference with a maximum temperature coefficient of 10ppm/°C. It utilizes a 16-lead narrow SSOP package and operates within the commercial temperature range of 0°C to 70°C. The device provides rail-to-rail voltage outputs controlled via a 2-wire I²C compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. With an internal reference of 2.048V, the full-scale output spans 0V to 4.096V when powered by a single supply between 4.5V and 5.5V. Key electrical specifications include a settling time of 3.9µs for ±1LSB accuracy, a gain error of ±0.02% FSR, and integral nonlinearity (INL) of ±0.5 LSB.

Feature Summary

• Quad 12-bit resolution with guaranteed monotonicity over temperature
• Integrated 2.048V reference yielding 4.096V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<1nV·s)
• Power-on reset configurable to zero-scale or mid-scale via PORSEL pin

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation and data acquisition
• Automatic test equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube packaging. Confirm the 'C' grade designation aligns with the required 0°C to 70°C operating temperature range for the target environment. Ensure the GN package type matches the PCB footprint requirements for the 16-lead narrow SSOP form factor.

Selection Notes

Select this part when a quad DAC configuration is required with a fixed 4.096V output span derived from an internal reference. The -H option specifically requires a supply voltage between 4.5V and 5.5V. For lower voltage operation down to 2.7V, the -L variant with a 2.5V full-scale output should be considered instead. Verify that the I²C address pins (CA0-CA2) can be configured to avoid bus conflicts in multi-device designs.

Part Context

This component belongs to the LTC2655 family of quad I²C DACs. The CGN suffix identifies the commercial temperature grade and 16-lead SSOP package. The H12 designation specifies the 4.096V full-scale range associated with the internal 2.048V reference and 12-bit resolution. Other variants in the series include 16-bit versions and QFN packages.

Replacement Considerations

Direct substitutes within the same family include LTC2655IGN-H12#TRPBF for industrial temperature range (-40°C to 85°C) or LTC2655CUF-H12#TRPBF for QFN packaging. Cross-family replacements require verification of pin compatibility and electrical performance matching.