LTC2654IGN-L12#TRPBF

Overview

The LTC2654IGN-L12#TRPBF is a quad 12-bit rail-to-rail digital-to-analog converter (DAC) from Analog Devices, housed in a 16-lead narrow SSOP package. It features an integrated reference with a maximum temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 4-wire SPI/Microwire compatible serial interface supporting clock rates up to 50MHz. Key electrical specifications include a settling time of 4.2µs, integral nonlinearity (INL) of ±1 LSB, and differential nonlinearity (DNL) of ±0.5 LSB. The unit is guaranteed monotonic over the industrial temperature range of –40°C to 85°C.

Feature Summary

• Quad 12-bit resolution with rail-to-rail voltage outputs
• Integrated precision reference with 10ppm/°C max temperature coefficient
• SPI/Microwire compatible 4-wire serial interface with 50MHz clock rate
• Guaranteed monotonic operation over the full operating temperature range

Applications

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

Procurement Notes

Verify that the #TRPBF suffix confirms tape and reel packaging for automated assembly. Confirm the IGN designation matches the required 16-lead narrow SSOP package and industrial temperature grade. Ensure the L12 suffix corresponds to the 12-bit resolution and 2.5V internal reference mode. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and specific lot markings.

Selection Notes

Select this component when four independent 12-bit DAC channels are required in a compact surface-mount package. The integrated 2.5V reference simplifies design by eliminating external reference components. Choose this model over the -H variant if the system supply voltage is between 2.7V and 4.5V, as the -H variant requires a minimum of 4.5V. Verify that the 50MHz serial interface speed meets the system's data throughput requirements.

Part Context

This part belongs to the LTC2654 family of quad DACs, which also includes 16-bit variants and QFN package options. The -IGN suffix specifically denotes the industrial temperature grade (-40°C to 85°C) and the 16-lead narrow SSOP physical footprint. The -L12 suffix indicates the 12-bit resolution configuration with a 2.5V full-scale output derived from the internal 1.25V reference multiplied by two.

Replacement Considerations

Direct pin-compatible replacements within the same package and temperature grade include other LTC2654 variants such as LTC2654CGN-L12#TRPBF for commercial temperature range or LTC2654BIGN-L12#TRPBF for higher accuracy grades. For 16-bit resolution requirements, consider the LTC2654IGN-L16#TRPBF.