SFH551/1-1 and SFH551/1-1V Receiver with Digital Output Stage for Polymer Optical Fiber Applications Data Sheet Description Features The SFH551/1-1 receiver is a transimpedance amplifier with an integrated photodiode and TTL open-collector output stage. The active area of this detector combined with the molded microlens gives an efficient coupling from the end of the polymer optical fiber. This receiver enables data rates up to 5 MBd and works with the Avago SFH757 transmitter diode. Bipolar IC with open-collector output The SFH551/1-1 is fully DC coupled and therefore no line code is needed. The internal Schmitt trigger ensures stable output states over the whole dynamic range. If light with intensity above the threshold level is coupled into the SFH551/1-1, the electrical output will be logical "low" and vice versa. Digital output, full TTL compatible Sensitive in visible and near IR range Transfer rate 5MBd Low switching threshold 2.2mm aperture holds standard 980/1000/2200m plastic fibers No fiber stripping required Molded microlens for efficient coupling Plastic Direct Fiber Connector housing (V-housing) With noisefree Vcc and GND, an undefined output signal is not possible. Nevertheless, the SFH551/1-1 must not be used without shielding from ambient light. If ambient light could reach the threshold level, the SFH551/1-1V component should be chosen. The plastic connector housing of the SFH V-series shields the ambient light perfectly. Locking screw attached to the connector SFH series components are optimized for easy coupling. No fiber stripping is required; just insert the cut fiber into the selected SFH component. Supplied in tubes Interference-free transmission by the light-tight housing Transmitter and receiver can be positioned flexibly No cross talk Auto insertable and wave solderable Applications Ordering Information Household electronics Power electronics Optical networks Application Literature SFH551/1-1 SFH551/1-1V Type Ordering Code SFH551/1-1 SP000063860 SFH551/1-1V SP000063855 AN # Description 5342 General information about the SFH series with Selection Guide and recommendations regarding System Planning and Mounting 5341 Information about Basic and Special Circuits for Transmitter and Receiver of the SFH series SFH551/1-1 Functionality The transparent plastic package has an aperture where a 2.2 mm fiber end can be inserted. This coupling method is very easy and extremely cost-effective. The SFH551/1-1 photodiode is silicon based and directly connected to a transimpedance amplifier that works as a pre-amplifier. A differential amplifier is connected in series and works as a post-amplifier. Its output is passed to the internal Schmitt trigger that drives a bipolar NPN transistor. The data-out signal is from the collector of this bipolar transistor. SFH551/1-1V The V-housing allows easy coupling of unconnectorized 2.2 mm polymer optical fiber by an axial locking screw. The SFH551/1-1 receiver is a transimpedance amplifier with a TTL open-collector output stage, therefore a pull-up resistor of at least 330 is necessary (see Figure 1). To minimize interference a bypass capacitor (100 nF) must be placed near (distance 3 cm) the SFH551/1-1 ports. In critical applications a shorter distance is better. VCC Rpullup Data-out GND Figure 1. Equivalent circuit diagram (simplified) Package Dimensions SFH551/1-1 view from A 8.6 surface not flat 0.5 0.5 0.55 7.65 2.54 GND DATA 4.6 2.275 0.55 1.5 4.625 Vcc 2.54 A 5.3 12.2 24.5 Dimensions in mm SFH551/1-1V 24.0 9.0 13.5 8.8 DATA 3.5 0.55 0.5 7.62 spacing Dimensions in mm 2 4.8 SFH551/1-1 component 0.6 0.5 locking screw Vcc GND DATA 2.54 5.08 Package V-housing Color Package V-housing axial locking screw SFH V-series components are color coded just like other Avago fiber optic components. The SFH757V transmitter has a white colored housing; the SFH250V and SFH551/11V receiver components have a black colored housing. This prevents mistakes while making connections. Product designation and date of manufacture are printed on the housing. Components of the SFH V-series are equipped with an axial locking screw for easy coupling to the unconnectorized 2.2 mm polymer optical fiber. The force that is necessary to pull a jammed fiber out of the V-housing is typically 50 N (with a torque of 15 cNm for tightening the locking screw). This is an approximate value that is very dependent on the fiber and torque combination. Package V-housing mounting pins SFH V-series components have two pins that are electrically isolated from the inner circuit. The pins are only designed for mounting the V-housing to the PCB surface. This helps increase stability, which is needed during fixing the fiber end by the axial locking screw. Package V-housing mounting pins Package V-housing axial locking screw The retention force between the soldered mounting pins and the V-housing of the SFH component is about 20 N (with a vertical exertion of force). This is an approximate value. Technical Data Absolute Maximum Ratings Parameter Symbol Min Max Unit Operating Temperature range TC -40 +85 C Storage Temperature range Tstg -40 +100 C Supply Voltage Range without Damage VCC -0.5 15 V +260 Notes Figure C Soldering Temperature (2mm from case bottom, t5s) TS Minimum Supply Voltage for Function VCC min 4 V Minimum Pullup Resistance (Vcc=5.0V) Routmin 330 Output Voltage VO -0.5 15 V Output Current IC 50 mA Power Dissipation (Output) PO 100 mW Electrostatic Discharge Voltage Capability ESD 2000 V 1 Electrostatic Discharge Voltage Capability ESD 400 V 2 Notes: 1. ESD Capability for all Pins HBM(Human Body Model) according JESD22-A114 2. ESD Capability for all Pins MM (Machine Model) according JESD22-A115 3 Typ 1 Characteristics (TA = -40C to +85C; Vcc = 4.75V to 5.25V) unless otherwise specified Parameter Symbol Min Typ* Max Unit Notes Figure 5, 7, 8 4 Maximum Photosensitivity Wavelength smax Photosensitivity Spectral Range (S=80% of Smax) s 600 Mean POF Overdrive Limit: Maximum Input ( = 650 nm) PIN(max) 252 -6 1000 0 W dBm(mean) Peak POF Sensitivity Limit: Minimum Input for Logic "0" ( = 650 nm) PIN(L) 20 -17 6.3 -22 W dBm 4, 5 Peak POF Off State Limit: Maximum Input for Logic "1" ( = 650 nm) PIN(H) 0.1 -40 W dBm 4, 5 Propagation Delay (Input: Pattern "1010", 5MBd) (Optical Input to electrical Output) tPHL tPLH 120 270 ns ns 1, 6 1, 6 700 Vcc-0.6 nm 780 Vcc-0.3 nm Output Voltage at Logic "1" VOH V 3 Output Voltage at Logic "0" VOL 0.2 0.6 V 3 Switching times (Input: Pattern "1010", 5MBd) Output Rise time (10% - 90%) Output Fall time (90% - 10%) tr tf 14 4 30 15 ns ns 2, 3, 6 2, 3, 6 Current Consumption (Input: Pattern "1010", 5MBd) Icc 8 14 20 mA 3, 6 Current Consumption (Logic"1", Light OFF) IccH 1.5 3.5 6.5 mA 3 Current Consumption (Logic"0", Light ON) IccL 13 17.5 23 mA 3 * Typical value = mean value at TA=25C and Vcc=5. 0V Notes: 1. PWSFH_output = PWopt_input + (tPLH - tPHL); PW = pulse width 2. Switching times increase with temperature 3. Measured with recommended Rpullup = 330 (see Figure 1) 4. Sensitivity increase with temperature 5. ValuedBm=10*log(Valuemeasured / 1mW) 6. Limits valid for optical input power from -20dBm(mean) to -9dBm(mean) 7. dBm(peak) = dBm(mean) + 3dB 8. PWD 170ns; Input: Pattern "1010", 5MBd Light on OPTICAL INPUT PWopt_input Light off VOH VOL PWSFH_output tPHL PWD*= (tPLH - tPHL) OUTPUT SFH551/1-1 tPLH Figure 2. Typical corresponding optical input to electrical output signal 4 PW*SFH_output = PW*opt_input + (tPLH - tPHL) *PW=pulse width, *PWD=pulse width distortion 2,3,4 2,3,4 Propagation Delay 250 tPLH 85C tPLH 25C tPLH -40C Propagation delay in ns 200 150 100 tPHL 85C tPHL 25C tPHL -40C 50 0 -28 -26 -24 -22 -20 -18 -16 -14 -12 -10 -8 -6 Optical Input Power in dBm (mean value) Figure 3. Typical Propagation delay, measured with Pattern "1010" at 5 MBd Pulse Width Distortion 160 PWD at -40C PWD at 25C PWD at 85C Pulse Width Distortion in ns 140 120 100 80 60 40 20 0 -20 -28 -26 -24 -22 -20 -18 -16 -14 -12 -10 -8 -6 Optical Input Power in dBm (mean value) Figure 4. Typical Pulse Width Distortion, measured with Pattern "1010" at 5 MBd For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright (c) 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0713EN AV02-3033EN - October 25, 2011