8T412B98PA-LC

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8T412B98PA-LC is a 3.3V logic compatible optical transceiver module for short distance data communication over optical fiber. It is developed for Fast Ethernet (100Mbps) applications and compatible with IEEE 802.3u 100BASE-FX standard. It provides full duplex FTTB/FTTC/FTTH connectivity and reliable high data rate transmission. They provide an ideal choice for short range, high-bandwidth applications and also support other Ethernet standards. Its major application fields mainly includes industrial automation, medical application, military field, etc.

The working principle of the 8T412B98PA-LC transceiver is based on the modulation and demodulation of optical signals and the transmission of electrical signals through the converted fiber. It mainly consists of a transmit data path and a receive data path. When transmitting data, the transmit data pins will send electrical signals. The PECL signal is converted to differential structures at the POUT output pin. An internal transformer will convert the differential signal to the same single-ended signal that can drive the laser diode. The modulation current of the laser diode is proportional to the input optical signal. When the transmit signal is modulated, the laser diode emits light in proportion to the input data, and optical signals are generated, thus realizing the transmission of data.

When data is received, light signals from the optical fiber are collected by the receiver. The receiver chips will detect the light signals and convert it to analog signals, which are then amplified and filtered to obtain a clear output signal. The signal is then converted to a logic level signal, which is sent to the data input pins to complete the receive data. For example, electrical data in the form of a $1$ will be converted to an optical signal that is detected by the receiver, and the optical signals will be converted back to an electrical signal in the form of a $1$.

In addition, the 8T412B98PA-LC transceiver also has functions such as on-chip power supply and control, auto-negotiation function, error detection and correction, adaptive equalization, automated cable equalization, etc. Moreover, wavelength agility and multi-rate support capabilities are also integrated, and the device supports optical output power control. These features make the 8T412B98PA-LC a powerful and reliable transceiver for fast Ethernet applications.

In conclusion, 8T412B98PA-LC is an optical transceiver module for short distance data communication over optical fiber and provides full duplex FTTB/FTTC/FTTH connectivity. It is developed for Fast Ethernet (100Mbps) applications and compatible with IEEE 802.3u 100BASE-FX standard. It mainly consists of a transmit data path and a receive data path. Various on-chip functions such as error detection and correction, auto-negotiation, etc. are integrated for reliable transmission. With its high performance, the 8T412B98PA-LC transceiver provides an ideal choice for short range, high-bandwidth applications.

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