OPT301 Integrated Photodiode and Amplifier In Hermetically Sealed Package

OPT301M – Ambient Light Sensor IC with Integrated Photodiode & Amplifier – Texas Instruments

The OPT301M from Texas Instruments is a precision ambient light sensor featuring a hermetically sealed photodiode and amplifier in a single TO-99 package. Ideal for high-reliability applications, it delivers accurate light intensity measurement with minimal external components. PCX ensures genuine Texas Instruments inventory with express shipping and dedicated technical support.

Key Features

• Type: Ambient light sensor (650nm peak sensitivity)
• Output: Voltage signal proportional to light intensity
• Supply Voltage Range: ±2.25V to 18V for flexible integration
• Robust Construction: Hermetically sealed TO-99-8 metal can package
• Operating Temperature: -40°C to +85°C for harsh environments
• Mounting: Through-hole design for secure PCB attachment

Technical Details

This monolithic IC combines a photodiode and transimpedance amplifier, eliminating external signal conditioning needs. The hermetically sealed TO-99 casing ensures long-term stability against moisture and contaminants. With a voltage output directly correlating to irradiance, it simplifies analog light measurement systems. Note: This product is marked obsolete by Texas Instruments but remains available through PCX’s secured inventory.

Typical Applications

• Industrial light metering and exposure control systems
• Medical instrumentation for optical density measurement
• Laboratory equipment requiring stable light detection
• Automotive dashboard ambient light sensing
• High-precision photographic and analytical devices

About Texas Instruments

Texas Instruments (TI) is a globally recognized leader in semiconductor design and manufacturing, renowned for innovations in analog and embedded processing. For decades, TI has set industry standards for precision components, backed by rigorous quality control and extensive R&D investment.

TI’s sensor portfolio exemplifies engineering excellence, delivering solutions trusted in mission-critical applications across aerospace, healthcare, and industrial automation. Their commitment to performance consistency makes TI components a preferred choice for demanding electronic designs.

About Ambient Light Sensors

Ambient light sensors convert luminous intensity into electrical signals, enabling automated brightness adjustment in displays and context-aware functionality in smart devices. These components optimize energy efficiency while enhancing user experience by adapting to environmental lighting conditions.

Integrated solutions like the OPT301M simplify circuit design by combining photodiodes with amplification circuitry. This integration improves signal-to-noise ratio and reduces calibration overhead, making them indispensable in medical, industrial, and scientific instrumentation where measurement accuracy is paramount.

Packaging

Available in protective Tube packaging for safe handling and automated assembly processes. PCX provides full traceability documentation with every order.

Frequently Asked Questions

Question: Is the OPT301M suitable for UV or IR detection?
Answer: No, it’s optimized for 650nm visible light (ambient sensing). For UV/IR, consider specialized photodiodes.

Question: Can I use this sensor with a microcontroller?
Answer: Yes, its analog voltage output interfaces directly with ADC inputs on most MCUs.

Question: Why is this part marked obsolete?
Answer: Texas Instruments discontinued production, but PCX maintains authentic stock for legacy designs.

Question: Does it require external amplification?
Answer: No – the integrated transimpedance amplifier provides immediate voltage output.

Question: What is the hermetically sealed package’s advantage?
Answer: It prevents humidity and chemical ingress, ensuring stability in harsh or sterile environments.

Question: Can PCX provide technical documentation?
Answer: Yes – access the OPT301M datasheet for design specifications.

Disclaimer: Product images are representational; refer to datasheet for exact dimensions.

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