ADN2821 Datasheet | Analog Devices

FEATURES Bandwidth: 8 GHz min Input Noise Current Density: 12p A√Hz Optical sensitivity: - 19 d Bm1 Differential Transimpedance /Linear Range: ADN2821_2: 2.0 kΩ/0.20 m A p-p ADN2821_5: 5.0 kΩ/0.08 m A p -p ADN2821_10: 10.0 kΩ/0.04 m A p-p Power Dissipation: 150 m W Differential Output Swing: 400 m V p-p min Input Overload: 3.25 d Bm @ 10 d B ER Low-F cutoff: ADN2821_10: 25 k Hz w/CLF = 0.5 n F On-Chip PD filter: RF = 200 Ω, CF = 20 p F RSSI voltage and current ratio: 0.8V/m A Die Size: 0.65 mm × 1.20 mm 11.1 Gbps 3.3V Transimpedance Amplifier ADN2821 PRODUCT DESCRIPTION The ADN2821_2/5/10 are a series of pact, high performance Si Ge 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 - 19d Bm sensitivity; 3.25d Bm input overload current at a 10d B extinction ratio. RSSI output signal proportional to average input current is available for monitoring and alarm generation. For assembly in small form factor packages, the ADN2821 series integrates a photodiode filter RFCF network on chip and features 25k Hz low frequency cutoff with small 0.5n F external capacitor The ADN2821 operates with a 3.3V ±0.3V power supply and is available in die form. APPLICATIONS 10.7 Gbps Optical Modules SONET/SDH OC-192/STM-64 and 10 Gb E Receivers, Transceivers, Transponders 10-12 BER, 10 d B extinction ratio, 0.85 A/W PD responsivity. FUNCTIONAL BLOCK DIAGRAM 3.3V VCC_FILT ER 200Ω FI LT ER IN VCC 50Ω 50Ω OU T OU T B 500Ω 20p F 0.85V 10m A RSSI GN D GN D CL F Figure 1. ADN2821 Block Diagram. Rev. Pr L Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of...