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GENERAL DESCRIPTION

The ADN2891 is a 3.2 Gbps limiting amplifier with integrated loss-of-signal (LOS) detection circuitry and a received signal strength indicator (RSSI). This part is optimized for SONET, Gigabit Ethernet (GbE), and Fibre Channel optoelectronic conversion applications. The ADN2891 has a differential input sensitivity of 4 mV p-p and accepts up to a 2.0 V p-p differential input overload voltage. The ADN2891 supports current mode logic (CML) outputs with controlled rise and fall times.

FEATURES

Input sensitivity: 4 mV p-p

80 ps rise/fall times

CML outputs: 700 mV p-p differential

Programmable LOS detector: 3.5 mV to 35 mV

Rx signal strength indicator (RSSI)

SFF-8472-compliant average power measurement

Single-supply operation: 3.3 V

Low power dissipation: 145 mW

Available in space-saving 3 mm × 3 mm, 16-lead LFCSP

Extended temperature range: ?40°C to +95°C

SFP reference design available

APPLICATIONS

SFP/SFF/GBIC optical transceivers

OC-3/OC-12/OC-48, GbE, Fibre Channel (FC) receivers

10GBASE-LX4 transceivers

WDM transponders