FOA1252A1 Datasheet, PDF (13/16 Pages) Infineon Technologies AG – 2.5 Gbit/s Transimpedance Amplifier

FOA1252A1
3
Application Notes
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 Ω), 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 kΩ.
b)
L¹⁾
4.7 Ω
V_CC
100 nF
GND
PIN-
Diode
Filter
V_CC
Q+
IN
Q-
FOA1252 ^GND
1) _{BLM11A601, Murata}
22 nF
22 nF
Q+
Q-
ITS11354
Figure 7 Application Using PIN-photodiode
Preliminary Data Sheet
9
1998-07