ADN2821

11.1 Gbps 3.3V Low Noise High Gain Transimpedance Amplifier

Obsolete

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Features

Bandwidth: 8GHz min
Input Noise Current Density: 12 pA/ root Hz
Differential Trans-impedance: 2 kΩ and 5 kΩ Options
Power Dissipation: 150 mW

Differential Output Swing: 400mV pk-pk
Input Overload: +3.25 dBm @ 10 dB ER
Low-F cutoff: 25 kHz w/CLF=0.5nF
Optional On-Chip PD filter: RF=200 Ω, CF=20 pF
Die Size: : 0.65mm x 1.20mm

Additional Details

The ADN2821 is a 10 Gbps high-performance SiGe Transimpedance Amplifier specifically designed for use in small form factor optical receivers. The ADN2821 series features low input referred noise current and a range of trans-impedance gains. 8GHz minimum bandwidth enables up to 11.1 Gbps operation; 1.1uA input referred noise current enables –19dBm sensitivity; +3.25dBm nominal operation at 10dB extinction ratio. For assembly in small form factor packages, the ADN2821 series integrates a photodiode filter RFCF network on-chip and features 25kHz low frequency cutoff with small 0.5nF external capacitor. The ADN2821 operates with a 3.3V ± 0.3V power supply and is available in die form.

Applications

Up to 11.1 Gbps Optical Modules

SONET/SDH OC-192/STM-64 and 10 GbE Receivers, Transceivers, Transponders