LTC2655CGN-H12#PBF

Overview

The LTC2655CGN-H12#PBF is a quad, 12-bit digital-to-analog converter (DAC) featuring an integrated 4.096V reference and rail-to-rail output buffers. It operates on a single 4.5V to 5.5V supply and utilizes a 2-wire I²C serial interface supporting standard (100kHz) and fast (400kHz) modes. The device guarantees monotonicity over temperature with a maximum integral nonlinearity (INL) of ±1 LSB and differential nonlinearity (DNL) of ±0.1 LSB. Key features include selectable power-on reset to zero-scale or mid-scale via the PORSEL pin, asynchronous DAC updates via LDAC, and ultralow crosstalk between channels.

Feature Summary

• Quad 12-bit resolution with integrated 4.096V reference
• Rail-to-rail output buffers guaranteed monotonic over temperature
• I²C compatible interface with selectable slave addresses
• Power-on reset configurable to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the package type matches the GN suffix (16-lead Narrow SSOP). Confirm the H suffix indicates the 4.096V full-scale internal reference configuration. Ensure the C suffix corresponds to the commercial temperature range (0°C to 70°C). Check for lead-free designation (#PBF) compliance if required by assembly specifications.

Selection Notes

Select this part when a quad DAC with I²C control and high accuracy is needed. The -H option requires a minimum supply voltage of 4.5V, unlike the -L option which supports 2.7V. Choose the GN package for surface mount applications requiring a 16-lead SSOP footprint. Consider the external reference mode if a different full-scale voltage than 4.096V is required.

Part Context

This component belongs to the LTC2655 family of quad DACs. Variants differ by resolution (12-bit vs 16-bit), internal reference voltage (2.5V for -L, 4.096V for -H), and package type (GN for SSOP, UF for QFN). The CGN-H12 specifically denotes the commercial grade, 16-lead SSOP package, 12-bit resolution, and 4.096V reference version.

Replacement Considerations

Direct substitutes within the same family include LTC2655CGN-L12#PBF (2.5V reference) or LTC2655CUF-H12#PBF (QFN package). For higher precision, consider the B-grade variants such as LTC2655BCGN-H12#PBF, which offer tighter INL specifications.