LTC2654IGN-H12#PBF

Overview

The LTC2654IGN-H12#PBF 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 4.096V. The device operates on a single supply voltage ranging from 4.5V to 5.5V and supports SPI/Microwire compatible 4-wire serial interfaces with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a settling time of 4.6µs for 12-bit accuracy, and a typical supply current of 1.9mA with the internal reference enabled.

Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C max reference
• Rail-to-rail output buffers with selectable internal or external reference
• SPI/Microwire compatible 4-wire serial interface operating up to 50MHz
• Power-on reset configurable to zero-scale or mid-scale via PORSEL pin

Applications

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

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type, temperature grade, and lead finish. Ensure compatibility with system power supply constraints, as the -H variant requires a minimum of 4.5V. Confirm that the 16-lead narrow SSOP footprint matches the PCB layout requirements.

Selection Notes

Select this model when a quad DAC configuration with high precision and low drift is required. The -H suffix indicates a 4.096V full-scale output suitable for applications needing higher voltage swings than the -L variant. Consider the 12-bit resolution if 16-bit precision is unnecessary to optimize cost and performance. Verify that the 4.5V to 5.5V supply range aligns with the system's power architecture.

Part Context

This component belongs to the LTC2654 family of quad DACs, which also includes 16-bit variants and commercial temperature grade options. The IGN suffix denotes the Industrial temperature range (-40°C to 85°C) and the Narrow SSOP package. Other family members like the LTC2654BIGN-L16#PBF offer different resolutions or full-scale voltages.

Replacement Considerations

Direct replacements within the same package and specification include other LTC2654 variants such as LTC2654CGN-H12#PBF for commercial temperature ranges. Cross-family substitutes like the LTC2604 or LTC2704 require verification of interface compatibility, resolution, and output drive capabilities.