R485WPAA

The R485-Type 2.5 Gbits/s lightwave receiver is designed for use in SONET OC-48 and synchronous digital hierarchy (SDH) STM-16 telecommunications applications and high-speed data communications applications. The receiver of R485WPAA converts received optical signals in the range of 1.2 mm to 1.6 mm wavelength into differential data and clock outputs. The receiver consists of either InGaAs APD or PIN photodetector (depending on model selected), a transimpedance amplifier, a limiting amplifier, and a clock and data recovery IC (CDR). The CDR uses PLL technology to extract the clock signal from the converted optical signal. A TTL compatible link status flag signal indicates when there is a loss of optical signal.

The receiver is manufactured in a low-profile, pigtailed, 24-pin plastic DIP package. It requires a single, +5.0 V power supply. The APD version has the added benefit of containing the high-voltage supply internal to the receiver. This internal supply also provides the necessary temperature compensation for the APD.