RP00244X.DOC page 2 from 3 Juli 2, 1997
Principal function:
4
3
1
4
Postamp
PIN-Preamp Filter
AC-coupling
RT
Characteristics
at TA= 25°C, unless otherwise specified. Optical power data refer to SM fibre as
optical port. Typical values, if not otherwise specified.
Symbol Min. Typ. Max. Unit
Optical Sensitivity (BER≤ 10-9)S -36 dBm
Linear Bandwidth (-3dB) BW 180 240 MHz
Optical overload Pmax 200 350 µW
Transresistance RT81012
kΩ
Noise current density 3 pA/√Hz
Supply Voltage VCC 4.5 5 6 V
Supply Current ICC 25 mA
Gain G 5 8 12 mV/µW
Description
The SRP00244x / SRP00245x is an optical receiver module which uses a high-
speed PIN photodetector coupled with a hybrid low noise transimpedance amplifier
(TIA) for 1300 nm or 1550 nm optical communications. The PIN-Photodiode is made
of InGaAs/InP and has an active diameter of 75 µm.
The function of the PIN-TIA module is to detect input optical power, to transduce the
incident radiation into current and then to convert the current into a voltage and drive
50Ω line.
The low input noise current density of the transimpedance amplifiers provides the
optical receiver module, when used with appropriate filtering, with ample sensitivity
for realizing minimum input power requirements.