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GENERAL DESCRIPTION

The ADN2880 is a 3.3 V, high gain SiGe transimpedance amplifier (TIA). The TIA converts the small signal current of a photo detector into differential voltage output. The ADN2880 features a 315 nA typical input-referred noise, enabling an optical sensitivity of ?24.2 dBm (0.85 A/W PIN). With a bandwidth of 2.5 GHz, the ADN2880 allows a data rate operation up to 3.2 Gbps. Typical power dissipation is approximately 70 mW.

FEATURES

Bandwidth: 2.5 GHz

Optical sensitivity: ?24.2 dBm1

Differential transimpedance: 4400 V/A

Power dissipation: 70 mW

Differential output swing: 260 mV p-p

Input overload current: 4.3 mA p-p

On-chip RSSI function

Low frequency cutoff: 20 kHz

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

Die size: 0.7 mm × 1.2 mm

APPLICATIONS

3.2 Gbps or below optical receivers

SONET/GbE/FC optical receivers

SFF-8472-compliant receivers

PIN/APD-TIA receive optical subassemblies (ROSA)