LTC2655CUF-H12#TRPBF

Overview

The LTC2655CUF-H12#TRPBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead 4mm × 4mm QFN package. It features an integrated reference providing a full-scale output of 4.096V and operates on a single 4.5V to 5.5V supply. The device utilizes a 2-wire I²C interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 3.9µs for 12-bit accuracy, and a typical glitch impulse of 7nV•s at mid-scale transitions.

Feature Summary

• Quad 12-bit resolution with rail-to-rail buffered voltage outputs
• Integrated 4.096V reference with ±10ppm/°C temperature coefficient
• I²C compatible serial interface with asynchronous LDAC update pin
• Power-on reset selectable between zero-scale and 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 suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the -H designation requires a supply voltage within the 4.5V to 5.5V range, as operation below 4.5V may fall outside specified performance parameters. Ensure the commercial temperature grade (0°C to 70°C) aligns with the target application environment requirements.

Selection Notes

Select the LTC2655CUF-H12#TRPBF when a quad DAC configuration with high precision and low crosstalk is required. The -H option is appropriate for applications needing a 4.096V full-scale output without external reference components. Compare against the -L variant if a lower supply voltage (2.7V–5.5V) or 2.5V output span is sufficient for the system design.

Part Context

This part belongs to the LTC2655 family of quad DACs, which also includes 16-bit variants and different package options such as the 16-lead SSOP. The CUH suffix denotes the commercial temperature grade, QFN package, and 4.096V internal reference specification. Related development tools include the DC1703A-C demonstration board for evaluating this specific device configuration.

Replacement Considerations

Direct replacements within the same family include LTC2655CUF-L12#TRPBF for 2.5V output applications or LTC2655BCUF-H12#TRPBF for higher accuracy grades. Cross-package equivalents like the GN series are available but require pinout adaptation.