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GENERAL DESCRIPTION

The ADN2882 is a 3.3 V high gain SiGe transimpedance amplifier (TIA) which converts the small signal current of a photo detector to a large differential voltage output. The ADN2882 features a typical 475 nA input-referred noise, enabling an optical sensitivity of ?22 dBm (0.85 A/W PIN). With a bandwidth of 3.5 GHz, the ADN2882 allows a data rate operation up to 4.25 Gbps. Typical power dissipation is 80 mW.

FEATURES

Bandwidth: 3.5 GHz

Input noise current density: 8 pA/√Hz

Optical sensitivity

?22.0 dBm1

?20.4 dBm2

Differential transimpedance: 3700 V/A

Power dissipation: 80 mW

Differential output swing: 260 mV p-p

Input overload current: 5.6 mA p-p

On-chip RSSI function

Low frequency cutoff: 12 kHz

On-chip PD filter: RF = 200 ?, CF = 20 pF

Die size: 0.7 mm × 1.2 mm

APPLICATIONS

4.25 Gbps optical receivers

GbE/FC optical receivers

SFF-8472-compliant receivers

PIN/APD-TIA receiver optical subassemblies