ADN2882

www.DataSheet4U.com Preliminary Technical Data FEATURES Technology: high performance SiGe Bandwidth: 3.2 GHz minimum Input noise current density: 10 pA√Hz Optical sensitivity: −22 dBm Differential transimpedance: 4000 V/A Power dissipation: 75 mW Differential output swing: 250 mV p-p Input current overload: +3.25 dBm Output resistance: 50 Ω side RSSI voltage and current ratio: 0.8V/mA Low-freq cutoff: 15 kHz On-chip PD filter: RF = 200 Ω CF = 20 pF Die size: 0.7 mm × 1.2 mm 4.25 Gbps 3.3V Low Noise Transimpedance Amplifier ADN2882 PRODUCT DESCRIPTION The ADN2882 is a compact, high performance 3.3 V power supply SiGe transimpedance amplifier (TIA) optimized for small form factor 4.25 Gbps metro-access, Ethernet PIN/APDTIA modules and 1×/2×/4× Fibre channel receiver applications and meets OC48 SR/IR sensitivity requirements. The ADN2882 is a single-chip solution for detecting photodiode current with a differential output voltage. The ADN2882 features low input referred noise current of 600 nA enabling −22 dBm sensitivity; 3.2 GHz minimum bandwidth enables up to 4.25 Gbps operation; +3.25 dBm nominal operation at 10dB extinction ratio. RSSI output signal proportional to average input current is available for monitoring and alarm generation. To facilitate assembly in small form factor packages such as a TO-46 or TO56 header, the ADN2882 integrates the photodiode filter network on chip and features 15 kHz low frequency cutoff without any external components. The ADN2882 chip are...