AFBR-57E6APZ

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1. Description

The AFBR-57E6APZ Small Form Factor Pluggable LC transceiver provides the system designer a product to implement FDDI/Fast Ethernet networks with DMI physical layers. As an enhancement to the conventional SFP interface defined in SFF-8074i, the AFBR-57E6APZ is compatible to SFF-8472 (digital diagnostic interface for optical transceivers). Using the 2-wire serial interface defined in the SFF-8472 MSA, the AFBR-57E6APZ provides real time information on temperature, LED bias current, LED average output power and receiver average input power. The interface also adds the ability to monitor the Receiver Loss of Signal (RX_LOS).

2. Features

    1. RoHS compliant

    2. Lead free

    3. Industry standard Small Form Pluggable (SFP) package

    4. LC duplex connector optical interface

    5. Operates with 50/125µm and 62.5/125µm multimode fiber

    6. Compatible with 100Base-FX version of IEEE802.3u

    7. Single +3.3V power supply

    8. +3.3V TTL LOS output

    9. Squelched receiver outputs

  10. Manufactured in an ISO 9001 certified facility

  11. Operating temperature range: -40°C to 85°C

  12. Bail de-latch

  13. Hot plug capability

3. Applications

    1. Factory automation at Fast Ethernet speeds

    2. Fast Ethernet networking over multimode fiber.

4. Transmitter

The transmitter contains a 1310nm InGaAsP LED. This LED is packaged in the optical subassembly of the transmitter. It is driven by an integrated circuit which converts differential PECL logic signals into an analog LED drive current. This current is monitored by the digital diagnostic interface. The transmitter light output power is inferred from this information. The LED is switched off in case a static signal is present at the PECL inputs.

5. Receiver

The receiver utilizes an InGaAs PIN photodiode coupled to a transimpedance pre- and postamplifier IC. It is packaged in the optical subassembly of the receiver. The data output is differential LVPECL. The LOS output is +3.3 V TTL as per SFF-8074i. The PIN photodiode average current is monitored by the digital diagnostic interface as a measure for input optical power. Rx squelch is activated when a low input power is detected.