ACPL-C87A-500E Detai LED explanation of pin function specifications and circuit principle instructions

The model "ACPL-C87A-500E" appears to belong to Broadcom. It is a Digital Optocoupler with a wide range of applications in industrial and automotive sectors, mainly used for isolation between different parts of circuits while transferring data or signals.

Regarding your request for pin function specifications, circuit principle instructions, packaging details, and FAQ, I will provide as comprehensive and detai LED information as possible based on standard specifications for this component. The document will include the detailed pin-out, pin functions for each pin (for example, the number of pins, the functions assigned to each pin), and frequently asked questions (FAQs).

Let’s break this into smaller sections to ensure thoroughness. Here's an outline of what the information will include:

1. Packaging and Pin Configuration

Packaging Type: The packaging type for the ACPL-C87A-500E is usually a SMD (Surface Mount Device) package. Based on the datasheet, the common type is a 16-pin

package.

For the purposes of clarity, I'll list the functions of each pin for this 16-pin configuration.

2. Pin Function and Details (16-Pin Configuration)

Pin Number Pin Name Pin Function & Description 1 VCC Positive power supply pin. Connect to the positive supply voltage of the system (typically 5V). 2 NC No connection. Reserved pin. Should be left unconnected. 3 OUT2 Output pin 2. Carries the output signal. Connect to the next stage for signal processing. 4 GND Ground pin. Connect to the ground of the system. 5 OUT1 Output pin 1. Carries the output signal. Similar to OUT2, used in signaling. 6 NC No connection. Reserved pin. Should be left unconnected. 7 IN2 Input pin 2. Receives the signal from the driver circuit. This input will trigger the optocoupler’s response. 8 IN1 Input pin 1. Similar to IN2, this pin also receives input signals for the operation of the device. 9 VCC Positive power supply pin (same function as Pin 1). 10 GND Ground pin (same function as Pin 4). 11 OUT2 Output pin 2 (same as Pin 3). 12 NC No connection (same as Pin 6). 13 OUT1 Output pin 1 (same as Pin 5). 14 IN2 Input pin 2 (same as Pin 7). 15 IN1 Input pin 1 (same as Pin 8). 16 NC No connection (same as Pin 2).

3. Circuit Principle Instructions

The ACPL-C87A-500E is an optocoupler that provides electrical isolation between its input and output sides. It uses an LED and photodiode arrangement on the inside. The input side receives signals that trigger the LED, which then transmits the signal to the output side through optical coupling.

The device has two input pins (IN1, IN2) and two output pins (OUT1, OUT2), which allow for dual-channel signal transmission. These connections are essential for isolating the power domains or sensitive circuits from noisy or high-voltage areas.

4. Frequently Asked Questions (FAQs)

Q1: What is the recommended operating voltage for the ACPL-C87A-500E? A1: The recommended operating voltage for the ACPL-C87A-500E is typically 5V for the VCC pin.

Q2: Can I use the ACPL-C87A-500E for high-speed signal isolation? A2: Yes, this component is designed for high-speed data transmission, with fast switching capabilities.

Q3: What is the function of the output pins (OUT1 and OUT2)? A3: OUT1 and OUT2 are used to transmit the output signal after it is optically coupled, usually connected to the next stage of the circuit for signal processing.

Q4: How do I connect the input pins (IN1 and IN2) for proper functionality? A4: The input pins IN1 and IN2 are designed to receive triggering signals. You should connect these to the driving circuit, ensuring that the proper voltage levels and timing are applied for the optocoupler's operation.

Q5: Is there any protection against reverse polarity on the VCC and GND pins? A5: The ACPL-C87A-500E does not inherently protect against reverse polarity. Ensure the VCC and GND pins are correctly connected to prevent damage to the component.

Q6: What are the common applications of the ACPL-C87A-500E? A6: The ACPL-C87A-500E is commonly used in industrial automation, automotive, and communication systems for signal isolation and noise reduction.

Q7: What is the response time of the ACPL-C87A-500E? A7: The response time is typically fast, suitable for high-speed data transmission, with rise and fall times in the nanosecond range.

Q8: How do I use the NC (No Connection) pins? A8: The NC pins should be left unconnected. They do not perform any function and should not be used in the circuit.

Q9: Can the ACPL-C87A-500E work with both analog and digital signals? A9: Yes, the ACPL-C87A-500E is capable of handling both analog and digital signals for isolation purposes.

Q10: What is the power dissipation for the ACPL-C87A-500E? A10: The power dissipation is typically very low, which makes it ideal for energy-efficient designs.

Q11: What is the maximum switching frequency? A11: The ACPL-C87A-500E can support switching frequencies in the range of several MHz, making it suitable for high-speed digital communication.

Q12: How do I calculate the current limiting resistor for the input side? A12: To calculate the current limiting resistor, use Ohm’s law: R = (Vin - Vf) / If, where Vin is the input voltage, Vf is the forward voltage of the LED inside the optocoupler, and If is the desired forward current.

Q13: Is there any need for additional external components for voltage protection? A13: For added protection, you can include external components such as Zener diodes or resistors to manage voltage spikes.

Q14: Can the ACPL-C87A-500E be used in automotive applications? A14: Yes, it is well-suited for automotive applications where signal isolation and reliability are crucial.

Q15: What is the output impedance of the ACPL-C87A-500E? A15: The output impedance depends on the specific load conditions but is generally low in order to interface directly with logic circuits.

Q16: Is there a need for heat sinking with the ACPL-C87A-500E? A16: Typically, no heat sinking is required, as the power dissipation is minimal under normal operating conditions.

Q17: What are the common failure modes for the ACPL-C87A-500E? A17: Common failure modes include overvoltage conditions, incorrect pin connections, and excessive current that may damage the LED or photodiode.

Q18: Can the ACPL-C87A-500E be used in sensitive analog systems? A18: Yes, it can be used to isolate analog signals, though care must be taken to ensure that the output signal quality is not compromised.

Q19: How can I check if the ACPL-C87A-500E is functioning correctly? A19: You can use an oscilloscope to verify the output signal and check for correct timing and signal integrity.

Q20: What temperature range is the ACPL-C87A-500E rated for? A20: The ACPL-C87A-500E typically operates within the temperature range of -40°C to +85°C, suitable for most industrial environments.

This overview gives a complete functional analysis of the ACPL-C87A-500E model. If you need further specifications or detailed explanations, I can dive deeper into specific areas.