PRODUCT DESCRIPTION
The ADN2821_2/5/10 are a series of compact, high performance SiGe 3.3V power supply Trans-impedance Amplifiers (TIAs) optimized for small form factor 10Gbps Metro-Access and Ethernet PD-TIA modules. The ADN2821 series features low input referred noise current and a range of trans-impedance gains, suitable for driving a typical CDR or transceiver directly. 8GHz minimum BW enables up to 11.1Gbps operation; 1.1µA input referred noise current enables −19dBm sensitivity; 3.25dBm input overload current at a 10dB extinction ratio. RSSI output signal proportional to average input current is available for monitoring and alarm generation.

FEATURES
   Bandwidth: 8 GHz min
   Input Noise Current Density: 12pA√Hz
   Optical sensitivity: −19 dBm1
   Differential Transimpedance /Linear Range:
      ADN2821_2: 2.0 kΩ/0.20 mA p-p
      ADN2821_5: 5.0 kΩ/0.08 mA p -p
      ADN2821_10: 10.0 kΩ/0.04 mA p-p
   Power Dissipation: 150 mW
   Differential Output Swing: 400 mV p-p min
   Input Overload: 3.25 dBm @ 10 dB ER
   Low-F cutoff:
      ADN2821_10: 25 kHz w/CLF = 0.5 nF
   On-Chip PD filter: RF = 200 Ω, CF = 20 pF
   RSSI voltage and current ratio: 0.8V/mA
   Die Size: 0.65 mm × 1.20 mm

APPLICATIONS
   10.7 Gbps Optical Modules
   SONET/SDH OC-192/STM-64 and 10 GbE
   Receivers, Transceivers, Transponders