R480

The R480-Type 2.5 Gbits/s lightwave receiver is designed for use in SONET and synchronous digital hierarchy (SDH) telecommunications applications up to OC-48 and STM-16 data rates, and high-speed data communications applications. The receiver converts received optical signals in the range of 1.2 mm to 1.6 mm wavelength into differential CML data outputs.

The receiver R480 consists of either an InGaAs APD or PIN photodetector (depending on model selected), a transimpedance amplifier, and a limiting amplifier that provides differential CML data output. A TTL compatible link status flag signal indicates when there is a loss of optical signal.

The receiver of R480 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. An analog photodetector monitor provides a voltage proportional to the optical input level voltage (OILV).