LTC2656CFE-L12#TRPBF

Overview

The LTC2656CFE-L12#TRPBF is an octal 12-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 20-lead thermally enhanced TSSOP package. It features rail-to-rail output buffers and a precision integrated reference with a maximum temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and communicates via a 4-wire SPI/MICROWIRE compatible interface with clock rates up to 50MHz. Key electrical specifications include a settling time of 4.2µs for ±1LSB accuracy at 12 bits, a maximum integral nonlinearity (INL) error of ±1LSB, and a power-on reset function configurable to zero-scale or mid-scale.

Feature Summary

• Octal architecture with 8 independent 12-bit DAC channels featuring rail-to-rail output buffers
• Precise integrated reference with a maximum temperature coefficient of 10ppm/°C
• Ultralow crosstalk between DACs (<1nV•s) and guaranteed monotonicity over temperature
• Configurable power-on reset circuit allowing outputs to initialize to zero-scale or mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging when sourcing components. Confirm that the C-grade designation aligns with commercial temperature range requirements (0°C to 70°C). Ensure the L-option full-scale voltage specification matches the target system design constraints before procurement.

Selection Notes

Select this component for designs requiring multiple low-cost, high-precision voltage outputs within a compact footprint. The -L option provides a 2.5V full-scale output suitable for lower voltage single-supply systems. Verify that the 12-bit resolution and ±1LSB INL meet the application's linearity requirements compared to higher accuracy grades.

Part Context

This part belongs to the LTC2656 family of octal DACs, which also includes 16-bit variants and alternative packages such as the QFN. The CFE suffix indicates the commercial temperature grade and TSSOP package type, while the L12 designation specifies the 2.5V internal reference and 12-bit resolution configuration.

Replacement Considerations

Direct replacements within the same family include the LTC2656CUFD-L12#TRPBF for QFN packaging or the LTC2656IFE-L12#TRPBF for industrial temperature ranges. Cross-model substitution requires verification of pin compatibility and electrical parameter alignment.