2,7 Gbps amp with AGC

24 April 2002 Analogue, Mixed Signal, LSI

Maxim designed the MAX3861 low-power amplifier with automatic gain control (AGC) specifically for WDM transmission systems using optical amplifiers. On a single +3,3 V supply this amplifier linearly amplifies or attenuates the input signal to a fixed output voltage swing in a fully differential approach. Both the input and output are on-chip terminated to match 50y lines. This AGC amplifier accepts differential or single-ended current-mode logic (CML) input data at rates up to 2,7 Gbps. Differential output swing can be adjusted between 400 mV to 920 mV over

46 dB input range. Variation in output swing is controlled to within 0,5 dB over a 16 dB input variation. The device provides an RSSI that is linear within 5% for input signal levels up to 100 mV pk-to-pk and a loss-of-signal (LOS) indicator with programmable threshold. The MAX3861 is available in 24-pin QFN package with exposed pad. Operates over -40 to +85°C.

CST Electronics, 011 452 0706

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