Optical Receiver Module SRP00244x SRP00245x (Photodiode with Preamplifier) Preliminary Data l l l l l l l l l l l InGaAs/InP-PIN-photodiode with Preamplifier-IC Designed for SONET OC-3 / SDH STM-1 applications in fiber-optic communication systems Hermetically sealed TO46 coaxial package MMF-pigtail with different plugs Sensitive in both opt. windows (1300 and 1550 nm) 3dB-Bandwidth 240 MHz Module with high optical sensitivity -36 dBm 25 dB dynamic range with 20 k transimpedance Differential output with 50 impedance Excellent noise immunity due to internal blocking and filtering capacitors SRP 00245x with flange for easy mounting Maximum Ratings Optical power ratings refer to the SM fiber input. Module Symbol Values Unit Operating temperature range at case TC - 40... +85 C Storage temperature range Tstg - 40... +85 C Soldering temperature TS 260 C/min Maximum Voltage VCC 6 V Optical Overload Pmax 350 W tmax = 10 s, 2 mm distance from bottom edge of case RP00244X.DOC page 1 from 3 Juli 2, 1997 Principal function: 4 RT 4 AC-coupling 3 1 Filter PIN-Preamp Postamp Characteristics at TA= 25C, unless otherwise specified. Optical power data refer to SM fibre as optical port. Typical values, if not otherwise specified. Symbol Min. Optical Sensitivity (BER 10 ) S -36 Linear Bandwidth (-3dB) BW 180 240 MHz Optical overload Pmax 200 350 W Transresistance RT 8 10 -9 Noise current density Typ. Max. dBm 12 VCC Supply Current ICC Gain G 4.5 5 6 25 5 8 k pA/Hz 3 Supply Voltage Unit V mA 12 mV/W Description The SRP00244x / SRP00245x is an optical receiver module which uses a highspeed 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 m. 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 50 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. RP00244X.DOC page 2 from 3 Juli 2, 1997 Designers of optical receivers can use the module in any application that benefits from integration of the photodiode and TIA into a TO coaxial package. Typical for such applications are receivers for digital crossconnects, digital loop carriers, add/drop-multiplexers and optical network units. The SRP00244x / SRP00245x is also beneficial because it operates from a single +5 volt supply and is packaged in a compact, hermetically sealed module. In addition, the SRP00244x / SRP00245x, which has three isolated leads, requires fewer electrical connections and no additional shielding compared with discrete implementations of the photodetection/ TIA-function. These features make the SRP00244x / SRP00245x an excellent optical receiver module of benefit in other fiber optic receiver applications. Pinout of the Receiver Module: (Bottom view) Gnd 2 Out- 1 3 Out+ 4 VCC RP00244X.DOC page 3 from 3 Juli 2, 1997