SG3503M

Overview

The SG3503M is a monolithic precision voltage reference generator manufactured by Microchip Technology. It provides a stable 2.5 V output with an initial accuracy of ±1%. The device features a temperature coefficient of 10 ppm/°C and operates within a junction temperature range of -55°C to +125°C. It is available in an 8-pin PDIP package and is internally trimmed for high precision.

Feature Summary

• Fully self-contained precision voltage reference generator
• Internally trimmed for ±1% initial accuracy
• Low temperature coefficient of 10 ppm/°C

Applications

• Precision analog-to-digital converter references
• High-accuracy measurement systems
• Instrumentation signal conditioning

Procurement Notes

Verify the specific suffix (e.g., M, Y) against the official datasheet to ensure correct package type and operating temperature range. Confirm RoHS compliance status and lead times directly with Microchip or authorized distributors, as availability varies by region and production batch.

Selection Notes

Select the SG3503M when a fixed 2.5 V reference with low drift is required. Ensure the application environment stays within the specified -55°C to +125°C range. Compare load regulation and noise specifications against other Microchip references like the REF02 if higher current drive or lower noise is needed.

Part Context

This component belongs to Microchip's family of precision voltage references, derived from earlier industry-standard designs. It serves as a stable baseline for power management ICs and data acquisition systems where long-term stability and low temperature dependence are critical for maintaining system accuracy.

Replacement Considerations

The SG3503Y is a compatible variant offering extended temperature performance. Verify pinout compatibility and electrical parameter tolerances before substituting with competitor parts such as the LM4040 or REF02 series.