Plastic Fiber Optic Transmitter including OS8300 MOST® data sheet

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Plastic Fiber Optic Transmitter including OS8300 MOST® data sheet

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Plastic Fiber Optic Transmitter including OS8300 MOST®
data sheet 4-pin MOST Optical Transmitter (MOT 003) taken preliminary. Samples which delivered before qualification production release engineering samples.
Features
Excellent solution converting high speed data from Plastic Optical Fiber (POF)
Description
4-pin MOST Optical Transmitter (MOT 003) highly integrated CMOS (OS8300) combined with high speed designed transmit 25Mbit/s optical data which biphase coded 50Mbaud. High speed transmitter MBaud internal peaking circuit minimizes PWD. Data Input (Logic Light Function) current through will setup working attenuation external resistor connected VCC. This makes range PMMA Fiber High coupled power in1000 micron plastic possible control optical output power LED. fiber cost
Applications
Optical Transmitter MOST Systems
MOST BigfootTx
Control
TX_DATA
Actual design status: OS8300 Revision Package type Device marking Date code Data sheet valid since 14-May-01 (calendar week
Preliminary Product Information 14-may-01
Infineon Oasis SiliconSystems
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Maximum Ratings
Parameter Storage Temperature Range Junction Temperature Soldering Temperature (>2.5 from case bottom t5s) Power Dissipation Power Supply Voltage Symbol TSTG PTOT VCCMax -0.5 Unit
Recommended Operating Conditions
Parameter Supply Voltage Operating Temperature Range (Rext =13.5 kOhm) Symbol 4.75 5.25 Unit
data this specification refers operating conditions above unless otherwise stated. Optical Signal Characteristics
(22.5 Mbit/s MOST Data, Vcc=4.75 5.25 Parameter Peak wavelength TA=25°C Temperature coefficient Peak Peak wavelength TA=-40.85°C Spectral bandwidth (FWHM) Average Output Power coupled into plastic fiber TA=25°C, Rext=15 kOhm, Note Temperature coefficient Popt Average Output Power coupled into plastic fiber TA=-40.85°C, Rext=15 kOhm, Note Average Output Power coupled into plastic fiber TA=-40.85°C, Rext=15 kOhm, over lifetime, Note Gain Popt when using 13.5 KOhm instead KOhm Optical Rise Time (20% 80%) Optical Fall Time (20% 80%) Extinction Ratio Pulse Width Variation, Note Average Pulse Width Distortion, Note Symbol -7.4 (185) -8.6 (140) -9.6 (110) 0.35 tPWV tAPWD 20.9 -0.5 0.16 -5.2 (300) -5.2 (300) -5.2 (300) -3.6 (435) -3.1 (490) -2.1 (615) 0.45 24.4 Unit nm/K (µW) (µW) (µW)
Peak25
Peak
Delta Popt25, TCPopt Popt Popt, lifetime
Note output power coupled into plastic fiber Popt measured with large area detector short length fiber (about cm), which ideally coupled Sidelooker. This value must used calculating power budget fiber optic system with long fiber because numerical aperture plastic fibers decreases first meters. Therefore fiber seems have higher attenuation over first meters compared with specified value. direct coupling fiber short fiber (uniform mode distribution) will observed. Therefore following section cable higher losses compared with (equilibrium mode distribution) Note electrical input signal fulfill following requirements: tPWV (min) 21.1 tPWV (max) 23.1 tAPWD (min) -0.5 tAPWD (max)
Infineon Oasis SiliconSystems Preliminary Product Information 14-may-01
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Characteristics
Parameter Level Input Voltage High Level Input Voltage Input Leakage Current (VCC=5.0V, VI=0.0V VI=5.0V) Input Capacitance Input Resistance Supply Current (Rext kOhm) state, biphase coded data, Note Supply Current (Rext kOhm) state, Note Symbol ILP2 -0.3 Unit kOhm
Note current through therefore optical output power overall power consumption depends settings Rext. nominal value Rext 15K. With Rext=30K optical output power about -3dB nominal value. Typical behaviour Fiure below. Important: external resistor Rext must within range 13.5K 33K. values Rext this range functionality given over whole temperature range device lifetime. Using values below Rext damage transmitter. Note transmitter jumps power mode after DATA max. 18µs transmitter power mode switched (max.) after DATA starts toggling.
Electrical Characteristics
Parameter Power Supply Rejection Ratio Power Time Power Down Time Input Rise Time Input Fall Time Test Conditions Power Supply Noise Zero MOST Data MOST Data Zero Symbol PSRR tTLH tTHL 18.0 Unit
Preliminary Product Information 14-may-01
Infineon Oasis SiliconSystems
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Typical Output Signal
Measured with fast optical receiver (Graviton SPD-1) with kOhm external resistor 22.579 Mbit/s MOST Data TA=25°C.
(22.5 MBit MOST Data/ VCC=5 TA=25°C)
Typical Dependency Average Output Power Popt external Resistor Rext
range Rext: 13.5 K.33
Average Optical Power
optical power
External Resistor Rext [KOhm]
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Infineon Oasis SiliconSystems
Preliminary Product Information 14-may-01
Mechanical Design 003: package (cavity interface)
DATA
Typical packing delivery reels:
number, production week, component type given backside laser marking.
Preliminary Product Information 14-may-01 Infineon Oasis SiliconSystems Page
Application Circuit:
Place these components close possible their corresponding pins FOT. Values change different light output power LED. This just proposal Rext application. There used also other circuits switch Rext from 30K.
Design Layout rules: 100nF bypass capacitors FOTs must located close possible between pins FOTs. ceramic caps tantalum caps with ESR. Also inductor/ ferrite bead (receiver) -3dB control circuit (transmitter) must placed close possible FOTs. prefer ferrite beads (e.g. type 74279214 Elektronik) since D.C. resistance very low. case other inductors used, D.C. resistance should less than 3Ohm. EMC, ferrite bead should connected power supply, close transmitter receiver. only ferrite bead together receiver transmitter!
Infineon Oasis SiliconSystems Preliminary Product Information 14-may-01
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ground connection ground plane recommended (Y-structure). That means ground planes transmitter, receiver shielding must separated. three ground planes should connected together behind bypass capacitors (refer design below). This ground signal should connected directly ground plane MOST controller (e.g. OS8104) power supply layer and/or bottom layer ground layer indicated example below. multi layer design used ground layer must have same ground separation like shown layer! serial resistor data line will also reduce problems. resistor must placed near receiver resistor must placed near MOST controller chip. value depends distance between FOTs MOST chip 5cm) within range 150R. Higher values resistors will increase jitter therefore cause locking problems MOST PLL! signals should routed parallel over long distance, embedded with ground copper, possible. Rext (15K resistor) transmitter used heat dissipation. Therefore there should good connection isolation gaps! Both pins should into copper area (see layout example below).
Layout example: reference board from OASIS Silicon Systems follows requirements above. schematic very similar example above, does include connection power supply, OS8104 micro controller.
example top- bottom layer (shown below) layout reference design board shows layout around optical receiver transmitter should look like. strongly recommended these examples your design best performance! Note: buffer circuit (IC1), connectors jumpers middle right section schematic used reference board only. They relevant other MOST hardware designs.
Preliminary Product Information 14-may-01
Infineon Oasis SiliconSystems
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Layer with 180° version pigtail:
OS8104 Power Supply
Bottom Layer (seen from side PCB):
OS8104 Power Supply
Bottom Layer: Bottom side positions
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Infineon Oasis SiliconSystems
Preliminary Product Information 14-may-01
Other items: shown circuit -3dB attenuation just proposal. other circuitry that double value Rext permitted well. fact that optical average level jumps power control signal (/-3dB) toggled, LOCK/ coding errors occur subsequent device short time. This very critical, since occurs only diagnosis mode. After time 10ms, device should lock again optical attenuation between devices high. signals measured using standard probes (>1M/<10pF). However, signal quality very bad, LOCK signal MOST chip flaky, connecting passive probe signal modify MOST chip's lock behavior either better, worse. capacitance analog probe (usually range 12pF), which causes this behavior shifting phase signal. this case, active probe with capacitance less than recommended. reference test board, which corresponds layout examples above, available Oasis SiliconSystems
Preliminary Product Information 14-may-01
Infineon Oasis SiliconSystems
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History Design Specification Status MOST Transmitter: Data Sheet Status Oct. May.99, Rev. Aug.99, Rev. 24-Nov-99 OS8300 Revision device color comments, cause change, important differences last Status preliminary data sheet samples preliminary data sheet change from package (change from package type 002) Operating Temperature Range .+60 minimum output power KOhm external resistor supply current, typ. diagram review data sheet: data sheet target specification, first page gives information about sample status fore word, difference current revision target spec. shown table: Operating Temperature Range .+75 Typ. Supply Current storage temperature minimum influence Rext; current consumption with DATAIN=0; diagram application circuit; Design Layout rules layout examples other items history added review data sheet: data sheet corresponds characterized values! p.1: Update block diagram OS8300 Revision changed Full Operating Temperature Range Supply Current reduced; information that package type will change p.2: Soldering parameters changed according JEDEC JESD22-B106-B Changed table Characteristics into Optical Signal Characteristics. Changed Wavelength according physical layer Specification. Added updated values average output power, optical rise/fall time, extinction ratio, jitter. p.3: Changed values input voltage. Changed leakage current added input impedance Changed current values just OFF-state Update values note note Added values power up/down table char. p.4: Updated typical optical signal Added dependency output power external resistor p.6: Added device color: Blue p.7: Update Application Circuit p.8: Added point regarding good heat dissipation Changed section Layout Example reference board design (also p.9) p.10: Changed last item: test board available Change name Change package type from Sidelooker Minimum level input voltage added Maximum high level input voltage added Drawing mechanical design with
green
03-July-00
blue
21-July-00
blue
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Infineon Oasis SiliconSystems
Preliminary Product Information 14-may-01
23-Apr-01 14-May-01
silver date code date code
Change Soldering Conditions; update optical parameters Fiber coupling left Update preliminary data sheet section, description, status Information about 13.5 kOhm added, Update dynamic parameters according MOST Specification Update parameters Update Drawing.
Preliminary Product Information 14-may-01
Infineon Oasis SiliconSystems
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Notes:
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Infineon Oasis SiliconSystems
Preliminary Product Information 14-may-01

Plastic Fiber Optic Transmitter including OS8300 MOST® data sheet

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