GENERAL DESCRIPTION

The ADN2892 is a 4.25 Gbps limiting amplifier with integrated loss of signal (LOS) detection circuitry and a received signal strength indicator (RSSI). This part is optimized for Fibre Channel (FC) and Gigabit Ethernet (GbE) optoelectronic conversion applications. The ADN2892 has a differential input sensitivity of 3.5 mV p-p and accepts up to a 2.0 V p-p differential input overload voltage. The ADN2892 has current mode logic (CML) outputs with controlled rise and fall times.

FEATURES

Input sensitivity: 3.5 mV p-p

70 ps rise/fall times

CML outputs: 750 mV p-p differential

Bandwidth selectable for multirate 1×/2×/4× FC modules

Optional LOS output inversion

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: 160 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

1×, 2×, and 4× FC transceivers

SFP/SFF/GBIC optical transceivers

GbE transceivers

Backplane receivers