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ADN2882

Features: Bandwidth: 3.5 GHz Input noise current density: 8 pA/Hz Optical sensitivity−22.0 dBm1−20.4 dBm2 Differential transimpedance: 3700 V/A Power dissipation: 80 mW Differential output swing: 260 mV p-p Input overload current: 5.6 mA p-p On-chip RSSI function Low frequency cutoff:...

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ADN2882: Features: Bandwidth: 3.5 GHz Input noise current density: 8 pA/Hz Optical sensitivity−22.0 dBm1−20.4 dBm2 Differential transimpedance: 3700 V/A Power dissipation: 80 mW Differential out...

ADN2882 Data Sheet

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Part Number:
ADN2882
Supply Ability:
5000

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Product Details

Description



Features:

Bandwidth: 3.5 GHz
Input noise current density: 8 pA/Hz
Optical sensitivity
−22.0 dBm1
−20.4 dBm2
Differential transimpedance: 3700 V/A
Power dissipation: 80 mW
Differential output swing: 260 mV p-p
Input overload current: 5.6 mA p-p
On-chip RSSI function
Low frequency cutoff: 12 kHz
On-chip PD filter: RF = 200 , CF = 20 pF
Die size: 0.7 mm * 1.2 mm




Application

4.25 Gbps optical receivers
GbE/FC optical receivers
SFF-8472-compliant receivers
PIN/APD-TIA receiver optical subassemblies




Pinout

ADN2882 Diagram




Specifications

Output Return Loss (dB) -20dB
-3 dB Bandwidth (GHz) 3.2GHz
Transimpedance (kohm) 4kOhms
Voltage Supply (V) +3.3V
Power Dissipation (mW) 75mW
Current Noise (pA/rtHz) 10pA/rtHz
Die Size (mm x mm) 0.7 x 1.2


Parameter Rating
Supply Voltage (VCC to GND)
Maximum Voltage to All Input and
Output Signal Pins
Minimum Voltage to All Input and
Output Signal Pins
Maximum Input Current
Storage Temperature Range
Operating Ambient Temperature Range
Maximum Junction Temperature
Die Attach Temperature (<30 sec)		 5 V
VCC + 0.4 V

GND − 0.4 V

10 mA
−65°C to +125°C
−40°C to +95°C
125°C
410°C





Description

The ADN2882 is a 3.3 V high gain SiGe transimpedance amplifier (TIA) which converts the small signal current of a photo detector to a large differential voltage output. The ADN2882 features a typical 475 nA input-referred noise, enabling an optical sensitivity of −22 dBm (0.85 A/W PIN). With a bandwidth of 3.5 GHz, the product allows a data rate operation up to 4.25 Gbps. Typical power dissipation is 80 mW.

To facilitate the assembly in small form factor packages, such as TO-46 headers, the ADN2882 provides an on-chip RC filter (200 , 20 pF) and features a 12 kHz low frequency cutoff without using an external capacitor. An on-chip RSSI circuit, which generates a voltage proportional to the average photo-diode current, is available for power monitoring and assembly alignment.

The ADN2882 is available in die form. With a chip area of 1.2 mm * 0.7 mm, the TIA layout is optimized for TO-Can-based packages.






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