LTC2656CIFE-L16#TRPBF

Overview

The LTC2656CIFE-L16#TRPBF is an octal 16-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices. It features a precision integrated reference with a maximum temperature coefficient of 10ppm/°C and operates on a single supply voltage ranging from 2.7V to 5.5V. The device provides eight independent DAC channels, each equipped with high-performance output buffers that support rail-to-rail operation. It utilizes a 4-wire SPI/MICROWIRE compatible serial interface capable of clock rates up to 50MHz. The component includes a power-on reset circuit configurable via the PORSEL pin to initialize outputs to zero-scale or mid-scale.

Feature Summary

• Octal 16-bit resolution with ±12LSB maximum integral nonlinearity (INL)
• Integrated precision reference yielding a 2.5V full-scale output
• Rail-to-rail output buffers with ultralow crosstalk (<1nV•s)
• Configurable power-on reset to zero-scale or mid-scale

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 for automated assembly. Confirm the C-grade designation aligns with the required ±12LSB INL specification for the target application. Ensure the FE package type matches the PCB footprint requirements for the 20-lead thermally enhanced TSSOP housing.

Selection Notes

Select this part when eight independent 16-bit channels are required within a compact form factor. The L option provides a fixed 2.5V full-scale range suitable for lower voltage signal chains. Verify that the commercial temperature range (0°C to 70°C) meets the environmental constraints of the deployment site.

Part Context

This component belongs to the LTC2656 family of octal DACs. It shares architectural similarities with the LTC2655 quad-channel variant but offers double the channel count. The C-grade accuracy level sits below the B-grade performance tier, offering a cost-effective solution for applications where tighter linearity specifications are not critical.

Replacement Considerations

Direct replacements include other parts within the LTC2656 family such as the LTC2656BCFE-L16#TRPBF for improved linearity or the LTC2656CIFE-H16#TRPBF for higher voltage output ranges. Cross-model substitution with the LTC2655 requires accounting for the reduced channel count.