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參數資料
| 型號： | LG1628AXA |
| 英文描述： | CAC 3C 3#12 SKT RECP BOX |
| 中文描述： | LG1628AXA的SONET / SDH 2.488 Gb /秒阻放大器 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 242K |
| 代理商： | LG1628AXA |
Preliminary Data Sheet
January 1998
LG1628AXA SONET/SDH 2.488 Gbits/s
Transimpedance Amplifier
Features
I
High data rate: 2.5 Gbits/s
I
High gain: 5.8 k
transimpedance
I
Complementary 50
outputs
I
Low noise
I
Ultrawide dynamic range
I
Single –5.2 V ECL power supply
Applications
I
SONET/SDH receivers
I
SONET/SDH test equipment
I
Digital video transmission
Functional Description
The Lucent Technologies Microelectronics Group
LG1628AXA is a hybrid integrated circuit that com-
bines the Lucent LG1628A gallium arsenide (GaAs)
transimpedance amplifier chip with an external Si
dual operational amplifier and necessary filtering to
achieve an ultrawide dynamic range amplifier. The
LG1628AXA is capable of handling input currents
from 3
μ
A
avg
to 4 mA
avg
(patent pending). Amplifier
operation is from a single –5.2 V power supply. The
targeted transmission system is SONET OC-48 and
SDH STM-16.
A complete receiver/regenerator can be constructed
with an LG1628AXA followed by an LG1605 limiting
amplifier and LG1600 clock and data regenerator.
Figure 1 shows the block diagram of the LG1628AXA
transimpedance amplifier. The amplifier consists of a
4.2 k
differential transimpedance stage followed by
a limiting buffer that provides complementary 50
outputs.
5-5329(F)
Figure 1. LG1628AXA Functional Diagram
GND
V
SS
Z
EFF
50
LIMITING
BUFFER
OUT+
R
F
OUT–
R
F
OVERLOAD CONTROL
IN–
IN+
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