H11A1FM

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H11A1FM optoisolators provide isolation of electronic circuits by using a light-emitting diode (LED) and phototransistor to transfer signals. Isolation is necessary when attempting to protect one system from interference from another, or when one part of a system needs to be able to malfunction without causing problems in other parts. This type of optoisolators can make a great choice for a number of applications. Here we discuss some of their features and explain the H11A1FM optoisolator working principle.

Isolation and Noise Reduction

The H11A1FM optoisolator series offers high performance for data communication and signal-processing applications. They are equipped with a light-emitting diode that converts electric signals into optical signals and a phototransistor that converts light signals into electric signals. This isolation technique combines high isolation voltage and reduced noise, making it an ideal choice for many commercial, industrial and automotive applications.

Input and Output Connections

The H11A1FM optoisolator comes with a variety of input and output connection options. The input side of the optoisolator has an array of pins that are connected to an LED die. The output side can be connected to the Phototransistor collector and emitter output connections. The Collector connection has logic voltage input options for a direct connection to 3 V, 4.7 V, 5 V, 6 V, 9 V, and 10 V. The emitter connection has options for a direct connection to 0 V-5 V, 0 V-6 V, 0 V-9 V, and 0 V-10 V inputs.

Features

The H11A1FM optoisolator series has a number of features that make it particularly suitable for many applications. These features include a high isolation voltage rating of up to 5000 VDC, low-input current of 1.2 mA, high output current of up to 3.2 mA, and a wide operating temperature range from -40 to +85 °C. In addition, the optoisolator has a low rise time of 18 nsec and a high fall time of 8 nsec.

Application Fields

The H11A1FM optoisolator is suitable for a number of different applications. They are often used in medical imaging, industrial controllers, power supplies, and automotive applications. They can also be used for high-current digital and analog signal conditioning, including voltage level shifting, current sensing and protection, or pulse isolation. Furthermore, they are ideal for data communication applications, providing isolation for ASI and RS-232 signals.

Working Principle

The H11A1FM optoisolator works by utilizing the isolation principle of an LED light source and a phototransistor detector to transfer signals from one side to the other. The LED light is output from one pin and read by the phototransistor on another. The output of the phototransistor is then presented back to the system on the output side where it can be used to control or activate different components. This signal transfer is isolated from outside sources and therefore can maintain accurate signal levels even with large environmental changes such as different temperatures or voltage levels.

The H11A1FM optoisolator series offers a highly reliable and efficient method to provide signal isolation and noise reduction. The wide range of input and output connection options make it extremely suitable for a variety of commercial, industrial and automotive applications. Furthermore, the optoisolator has a fast response time and a wide operating temperature range. Due to its reliable performance, the H11A1FM series makes a great choice when it comes to isolating electronic circuits.

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