ZRT040GC1TC

Overview

The ZRT040GC1TC is a monolithic integrated circuit providing a precise stable reference voltage of 4.01V at 500µA. It features a knee current of 150 µA and operates over a temperature range of -40°C to +85°C. The device offers a trim facility for adjusting the output voltage within a ±5% range, with an initial voltage tolerance of 1%. Electrical characteristics include a maximum temperature coefficient of 50 ppm/°C, a reverse current limit of 75 mA, and a slope resistance of up to 3.0 Ω. Output noise is specified at 50 µV peak-to-peak over the 0.1 Hz to 10 Hz frequency range.

Feature Summary

• Trimmable output voltage capability for system error compensation
• Excellent temperature stability across the operating range
• Low output noise figure suitable for precision applications
• No external stabilizing capacitor required in most cases

Applications

• Precision measurement systems requiring stable reference voltages
• Analog-to-digital converter (ADC) reference sources
• Data acquisition systems needing low drift references
• Battery-powered instrumentation utilizing low power consumption

Procurement Notes

Verify the specific suffix 'TC' against manufacturer documentation to confirm tape and reel packaging details, as datasheets may list standard suffixes like 'G'. Confirm availability status directly with Diodes Incorporated or authorized distributors, as component lifecycle stages can change. Ensure the ordering code matches the required temperature grade and tolerance specifications for your design.

Selection Notes

Select this component when a 4.01V shunt reference with 1% initial accuracy is required. The SOT223 package is suitable for surface mount applications where space is limited. Consider the trim pin functionality if voltage adjustment is necessary to compensate for system errors. Verify that the operating current range between 150 µA and 75 mA aligns with the power budget of the target application.

Part Context

The ZRT040 series includes variants such as ZRT040GC2 (2% tolerance) and ZRT040GA1 (-55°C to 125°C). The ZRT040GC1TC specifically denotes the C grade (-40°C to 85°C) with 1% tolerance in a SOT223 package. This part belongs to the broader family of low-power precision reference sources designed for stable performance under varying thermal conditions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult manufacturer cross-reference guides for potential alternatives.

FAQ

How is the trim pin handled if voltage adjustment is not needed?

When the trim facility is not used, the trim pin should be left open circuit.

What is the output voltage adjustment range?

The device is specified over a ±5% trim range, allowing the output voltage to be adjusted from 3.93V to 4.09V.

Does the device require an external capacitor for stability?

No external stabilizing capacitor is required in most cases.