R768

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations section of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

The R768 40 Gbits/s fiber-optic receiver consists of a high-speed photodetector (PIN) and a wide-band linear preamp in a pigtailed surface-mount metal package with a single-ended V-connector. It is designed for use in single-mode, high-speed telecommunication applications at the SONET OC-768 and the ITU-T SDH STM-256 data rate of 42.5 Gbits/s.

The operating case temperature range for the receiver is 0 °C to 65 °C.

The receiver of R768 is manufactured in a compact, 16-pin surface- mount package with a single-mode optical fiber pigtail. The fiber pigtail is internally beveled for low return loss and is available with an FC-PC optical connector. The received data is dc-coupled.

The receiver of R768 requires only a 6 V power supply for operation, plus an optional VADJUST from 1.0 V to +1.0 V (see pin descriptions). The photodiode requires a separate bias voltage: for the PIN, a nominal reverse bias of 4 V is required.