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參數(shù)資料
| 型號： | LG1605DXB |
| 元件分類： | 限幅放大器 |
| 英文描述： | LG1605DXB Limiting Amplifier |
| 中文描述： | LG1605DXB限幅放大器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 733K |
| 代理商： | LG1605DXB |
Data Sheet
February 1999
LG1605DXB Limiting Amplifier
2
Lucent Technologies Inc.
Functional Description
(continued)
The amplifier has a virtually constant output delay for
input signal levels, varying across three decades. As a
result, the device has very low amplitude-to-phase con-
version, which makes it ultimately suitable for applica-
tions in highly sensitive fiber-optic systems. Although
the amplifier is most sensitive when the input is ac cou-
pled (see Figure 3), a low offset (<25 mV) and a large
common-mode input range of 2 V make it useful in
applications that require a high-speed comparator as
well.
A unique input coupling arrangement allows for a fre-
quency response down into the low kHz range while
using coupling capacitors that are small enough to
maintain a good input return loss at high frequencies.
The outputs, when ac coupled, provide a good RF ter-
mination up to very high frequencies. The associated
ability to absorb reflections returning from the receiving
end is essential for preventing intersymbol interference
in fiber-optic systems.
The amplifier is a natural step-up interface between
receivers, such as the Lucent Technologies Micro-
eletronics Group Optoelectronics unit 1319 and regen-
erators like the Lucent Technologies Microelectronics
Group LG1600. The referred wideband input noise
(168 μVrms typical) allows for a <1e–9 bit error rate
(BER) for inputs down to 2 mVp-p (S/N ratio of
21.5 dB).
In SAW based clock recovery systems, with clock fre-
quencies as high as 2.5 GHz, the device can provide a
clock-limiting function in systems.
The LG1605DXB is available in a hermetically sealed,
16-lead, glass-metal surface-mount package and uses
a standard ECL supply.
Pin Information
The pinout for the LG1605DXB is shown in Figure 2.
12-3223(F)
Figure 2. Pin Diagram
GND
GND
1
2
3
4
V
+REF
12
11
10
9
16
15
14
13
GND GND V
BS
5
6
7
8
GND GND
V
BF
V
+IN
V
–IN
V
–REF
V
SS
V
BR
V
+OUT
V
–OUT
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