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參數(shù)資料
| 型號： | FOA1252B1 |
| 廠商： | SIEMENS AG |
| 英文描述： | 2.5Gbit/s,3.3v transimpendence amplifier(2.5GBIT/S,3.3V 互阻抗放大器) |
| 中文描述： | 每秒2.5GB /秒，3.3 transimpendence放大器（每秒2.5GB /秒，3.3互阻抗放大器） |
| 文件頁數(shù)： | 5/24頁 |
| 文件大?。?/td> | 255K |
| 代理商： | FOA1252B1 |
FOA1251B1, FOA1252B1
Overview
Advance Datasheet, Document Rev. 1.0
1-5
10June1999
Advance Information
1.3
General Description
The FOA1251B1, FOA1252B1 is a high performance transimpedance amplifier (TIA)
designed for use in data- and telecommunication systems for optical networks:
SDH STM-16
SONET OC-48
The FOA1251B1, FOA1252B1 can be used from a single +3.3 V power supply. It offers
a transimpedance of typically 27 k
over a 3 dB bandwidth of at least 1600 MHz. The
sensitivity of the device allows for a limitated output voltage with input currents greater
than 10
μ
A.
The output signal has a typical differential amplitude of 500 mV
pp
, which facilitates easy
interconnection to downstream clock/data recovery and demultiplexer devices. The high
output voltage and the built-in limiting function eliminate the need for a limiting amplifier
in typical receiver applications.
The FOA1251B1, FOA1252B1 has an on-chip filtered output used for DC biasing of the
PIN-diode. If an APD is used as input signal source, an external DC source with higher
voltage may be required. Decoupling to the filter terminal of the FOA1251B1,
FOA1252B1 is still recommended because this pin serves as stable reference point for
the input signal.
The input sensitivity which is measured at BER = 10
-10
is better than -23 dBm.
A separate monitor signal is available from the FOA1251B1, FOA1252B1. This signal is
intended for supervision of the input DC current without intrusion into the sensitive input
signal path.
The FOA1251B1, FOA1252B1 can be delivered in a standard TSSOP-16 plastic
package for PCB mounting, or as die for integration with the PIN diode into one package.
The latter will keep the high impedance interconnection to the PIN diode short, which
results in increased bandwidth and a minimized noise-pickup.
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