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ADN2882 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADN2882
Description  4.25 Gbps 3.3V Low Noise Transimpedance Amplifier
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
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ADN2882 Datasheet(HTML) 1 Page - Analog Devices

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4.25 Gbps 3.3V Low Noise
Transimpedance Amplifier
Preliminary Technical Data
ADN2882
Rev. PrD
November
04
2004
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 patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
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
APPLICATIONS
4.25 Gbps optical modules
SFF-8472 compliant receivers
PIN/APD-TIA receive optical subassembly
SONET/GbE/FC optical receivers, transceivers, transponders
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/APD-
TIA 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 TO-
56 header, the ADN2882 integrates the photodiode filter
network on chip and features 15 kHz low frequency cutoff
without any external components. The ADN2882 chip area is
less than 1 mm2, operates with a 3.3 V power supply and is
available in die form.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. ADN2882 Block Diagram
1100
50
50
0.85V
5mA
200
20pF
OU T
OU T B
GN D
GN D
CAP
FI LT ER
IN
VCC
VCC_FI LT ER
3.3V
RSSI


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