EL817 Datasheet, Features, Pinout, Package and Application

The EL817 is a versatile optocoupler device designed to meet the demands of modern electronic systems requiring electrical isolation and precision signal transfer. Manufactured by Renesas Electronics, the EL817 series combines low power consumption, rail-to-rail input and output capabilities, and high accuracy to deliver reliable performance across various industrial, consumer, and instrumentation applications.

With its compact package options and environmentally friendly design, the EL817 offers an ideal solution for engineers seeking to optimize their systems for efficiency and functionality.

Overview of the EL817

The EL817 series is an optocoupler device consisting of an infrared-emitting diode paired with a phototransistor detector, housed in a compact 4-pin DIP package. These devices are available in standard and wide-lead spacing, as well as surface-mount (SMD) configurations. Designed for applications requiring electrical isolation and signal transfer, the EL817 offers reliable performance across a variety of industrial and consumer electronics applications.

Optimized for single-supply operation within a voltage range of +2.4V to +5.5V, the EL817 also functions as a micropower instrumentation amplifier. It provides rail-to-rail input and output capabilities, allowing for efficient operation in low-power environments. The device consumes a typical supply current of only 65µA while delivering exceptional DC and AC performance. With high common-mode rejection and feedback terminals that enable zero input to be adjusted to any output offset, the EL817 offers versatility for precision signal conditioning and measurement applications.

The EL817 supports gains of 100 or more, utilizing a feedback divider to control amplification. Its bipolar input design ensures minimal offset and low 1/f noise, while the input range extends from ground to slightly above the positive rail. The output stage operates without requiring pull-up or pull-down resistors, delivering a full swing from ground to the supply voltage. This makes the EL817 suitable for battery-powered applications, including those using a single lithium cell or two Ni-Cd batteries, ensuring efficient and accurate performance.

EL817 Features

• Low Power Consumption: A maximum supply current of 95µA ensures energy-efficient operation, making the EL817 suitable for low-power applications.
• Precision Offset Voltage: Offers excellent precision with a maximum offset voltage of 200µV for the EL8170 and 1000µV for the EL8173, catering to diverse accuracy requirements.
• Minimal Input Bias Current: Features a low maximum input bias current of 3nA, ensuring high input impedance for accurate signal processing.
• Wide Bandwidth: Delivers impressive frequency performance, with a -3dB bandwidth of 396kHz at a gain of 10 and 192kHz at a gain of 100, supporting high-speed signal handling.
• Rail-to-Rail Capability: Supports single-supply operation with rail-to-rail input voltage range and output swing, maximizing dynamic range and flexibility in design.
• Environmentally Friendly: Compliant with RoHS standards and free of hazardous substances (Pb-Free), ensuring alignment with environmental regulations.

EL817 Pinout

The EL817 features an 8-pin configuration designed for precision instrumentation applications. Each pin serves a specific purpose, ranging from input and feedback terminals to power supply connections. Proper handling of input and feedback terminals is critical to avoid offset drift and maintain accurate operation. Below is the detailed pinout information:

EL817 Package

EL817 Manufacturer

Renesas Electronics Corporation, a global leader in semiconductor solutions, manufactures the EL817 series. Renesas specializes in designing and producing high-quality components for diverse applications, including industrial automation, automotive systems, and consumer electronics. Their products are known for reliability, energy efficiency, and advanced functionality, making them a trusted choice for engineers and designers worldwide.

With a focus on innovation, Renesas combines cutting-edge technology and comprehensive design support to meet the growing demands of modern electronics. The EL817 series reflects Renesas' commitment to delivering high-performance solutions, providing precision, low power consumption, and robust performance for applications requiring isolation and signal transfer. Renesas continues to drive advancements in semiconductor technology, offering solutions that empower next-generation systems.

Applications of EL817

The EL817 is well-suited for a wide range of precision applications, particularly in systems requiring low power consumption and high input impedance. Its ability to operate with rail-to-rail inputs and outputs makes it ideal for use in battery-powered and high-sensitivity measurement systems.

• Battery- or Solar-Powered Systems: Optimized for low power consumption, ensuring extended operational life.
• Strain Gauges: Provides accurate amplification for precise strain measurements.
• Current Monitors: Ensures reliable current sensing in power and control circuits.
• Thermocouple Amplifiers: Delivers high-accuracy amplification for temperature measurement applications.

Application Circuit

The EL817 is commonly used in voltage measurement circuits due to its precision and isolation capabilities. Its typical voltage measurement configuration ensures accurate signal transmission while maintaining electrical isolation, making it ideal for applications requiring safety and reliability.

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Conclusion

In summary, the EL817 series is a robust and reliable optocoupler solution for applications demanding electrical isolation, precision, and low power consumption. From battery-powered devices to precision measurement systems, its wide range of features ensures versatility and efficiency in diverse environments. Backed by the trusted quality of Renesas Electronics, the EL817 continues to empower engineers with advanced solutions for modern electronics, fostering innovation and driving technological progress.

EL8170IS

Renesas Electronics Corporation

3~7 Days

In Stock：7,647

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