參數(shù)資料
型號: foa1121
廠商: SIEMENS AG
元件分類: 運動控制電子
英文描述: 1.25 Gbit/s Transimpedance Amplifier(互阻抗放大器)
中文描述: 1.25 Gbit / s的阻放大器(互阻抗放大器)
文件頁數(shù): 8/9頁
文件大小: 157K
代理商: FOA1121
FOA1121A1
FOA1122A1
Semiconductor Group
8
July 1998
Application notes
a) General information
The output pins Q
+
and Q
-
must be terminated equally to prevent instabilities.
It is recommended to minimize stray capacitance when connecting photodiode to
transimpedance amplifier.
To improve power supply rejection ratio (PSRR), V
CC
should be supplied via resistor
(4.7
)
, capacitor (100 nF) to GND, and inductor (BLM11A601, Murata) to V
CC
-pin.
The monitor pin (not used in these application notes) must be left open or connected
to V
CC
via resistor of 0 … 2 k
.
b)
Figure 8 Application using PIN-photodiode.
c)
Figure 9 Application using APD-photodiode.
V
IN
G
FILTER
Q-
Q+
FOA1121/2
100 nF
4.7
VCC
GND
L*
PIN-
Diode
*) BLM11A601, Murata
22 nF
22 nF
Q+
Q-
V
IN
G
FILTER
Q-
Q+
FOA1121/2
22 nF
22 nF
100 nF
4.7
VCC
GND
L*
Q+
Q-
x nF
APD-Diode
*) BLM11A601, Murata
V
APD
x k
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