LTC2655CGN-L12#TRPBF

Overview

The LTC2655CGN-L12#TRPBF is a quad 12-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead narrow SSOP package. It features an integrated 10ppm/°C maximum reference, providing a full-scale output of 2.5V when operating with the internal reference. The device supports a single supply voltage range of 2.7V to 5.5V and utilizes a 2-wire I²C compatible serial interface for control. Key electrical specifications include a settling time of 3.9µs, a gain error of ±0.02% FSR, and an integral nonlinearity (INL) of ±0.5 LSB. The outputs are rail-to-rail buffered and guaranteed monotonic over temperature.

Feature Summary

• Quad 12-bit resolution with integrated 2.5V reference
• I²C compatible serial interface supporting standard and fast modes
• Rail-to-rail output buffers with ultralow crosstalk (<1nV•s)
• Selectable power-on reset to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging. Confirm the 'C' grade designation aligns with the required commercial temperature range of 0°C to 70°C. Ensure the L12 suffix corresponds to the 12-bit resolution and 2.5V full-scale output configuration. Cross-reference the GN package code with the 16-lead narrow SSOP physical footprint requirements.

Selection Notes

Select this component if a quad DAC configuration with I²C control is required. The -L option is appropriate for systems needing a 2.5V full-scale output with a supply voltage as low as 2.7V. For higher precision requirements, consider the B-grade variant which offers tighter INL specifications. Verify that the external reference mode can be utilized if a different full-scale voltage is needed by applying a voltage between 0.5V and VCC/2 to the REFIN/OUT pin.

Part Context

This part belongs to the LTC2655 family of quad DACs, which also includes 16-bit variants and options with a 4.096V full-scale output (-H series). The CGN-L12 specifically denotes the commercial temperature grade, 12-bit resolution, and 2.5V reference configuration within the 16-lead SSOP package. Other packages available in the family include the 20-lead QFN (UF).

Replacement Considerations

Direct substitutes within the same family include LTC2655IGN-L12#TRPBF for industrial temperature range (-40°C to 85°C) or LTC2655BCGN-L12#TRPBF for improved linearity accuracy. For 16-bit resolution, consider LTC2655BCGN-L16#TRPBF.