LTC2630AISC6-LZ12#TRMPBF

Overview

The LTC2630AISC6-LZ12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) housed in a 6-lead SC70 package. It features an integrated precision reference providing a full-scale output of 2.5V with a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and includes a rail-to-rail output buffer guaranteed monotonic over the operating temperature range. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB for the A-grade device, a typical supply current of 180µA at 3V, and a power-down mode consuming a maximum of 1.8µA. The part incorporates double-buffered data latches and supports SPI/MICROWIRE compatible serial interfaces.

Feature Summary

• Integrated Precision Reference: Provides a stable 2.5V full-scale output with a low drift of 10ppm/°C.
• High Accuracy: A-grade specification guarantees a maximum Integral Nonlinearity (INL) error of ±1 LSB across the full temperature range.
• Rail-to-Rail Output: Features a rail-to-rail output buffer capable of driving capacitive loads up to 500pF.
• Low Power Consumption: Operates with a typical supply current of 180µA at 3V and reduces to a maximum of 1.8µA in power-down mode.

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration. Confirm that the 'I' grade corresponds to the industrial temperature range of –40°C to 85°C. Ensure the 'LZ' designation matches the requirement for zero-scale power-on reset and 2.5V internal reference operation. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when a compact 6-lead SC70 footprint is required alongside high accuracy (±1 LSB INL). Choose the 'L' variant for 2.7V–5.5V supply ranges requiring a 2.5V full-scale output. Opt for the 'Z' power-on reset option if system initialization requires the DAC output to start at zero scale rather than mid-scale. Consider the 'A' grade only if strict linearity specifications are mandatory compared to standard grades.

Part Context

This part belongs to the LTC2630 family of single-channel DACs available in 12-, 10-, and 8-bit resolutions. The family shares common architectural features including SPI compatibility and rail-to-rail outputs but differs in resolution, accuracy grades, and power-on reset behaviors. The SC70 package allows for space-constrained designs where larger packages like MSOP or QFN are not feasible.

Replacement Considerations

Direct replacements within the same family include LTC2630ISC6-LZ12#TRMPBF (standard grade, ±2 LSB INL) or LTC2630HSC6-LZ12#TRMPBF (automotive grade, extended temperature range). Verify that any substitute maintains the 2.5V internal reference and zero-scale power-on reset characteristics to ensure functional equivalence.