HFD3023-500-BAA

HFD3023-500 Series Fiber Optic TTL Detector Fiber Optic Components The HFD3023-500 Series is a direct coupled optical receiver Optical power from the fiber strikes the photodiode and is designed for use in short distance 850 nm fiber optic systems. converted to electrical current. This current couples to the dc The receiver contains a monolithic IC (Integrated Circuit) with amplifier, which drives an open collector transistor output. The an integral photodiode and amplification circuit, and an open output, when connected to a pull up resistor, can interface to collector Schottky output. The output allows it to be directly TTL loads. The electrical signal is the inverse of the input light interfaced with standard TTL (Transistor-Transistor Logic) signal. When light strikes the photodiode, the output is a low circuits. logic level. When no light strikes the photodiode, the output is a high logic level. The HFD3023-500 Series converts the optical signal in a point- to-point data communications fiber optic link to a TTL output. Pulse Width Distortion (PWD) is an increase in the output The 0.006 in photodiode with a 0.024 in microlens (to enhance pulse width (for high level optical input). The typical the optics) is mechanically centered within the TO46 package. performance curves illustrate how PWD varies with optical power, temperature and frequency. The amount of PWD that a Electrical isolation is important in obtaining the maximum given system can tolerate without an error due to a missing bit performance. A 0.1 F bypass capacitor must be connected of information is dependent upon system considerations. The between Vcc and ground. This minimizes power supply noise, output of the HFD3023 will typically connect to the input of increasing the signal quality. Shielding can also reduce some form of a serial interface adaptor IC. The specifications coupled noise through use of ground plane PCB, shielding for that IC govern the amount of PWD that can be tolerated in around the device and shielding around the leads. the system. The HFD3023-500 Series is the suggested replacement for Honeywells HFD3023-002 Series. FEATURES TYPICAL APPLICATIONS Converts fiber optic signals to TTL digital outputs Data communications Typical sensitivity 2 W (-27 dBm) CCTV systems High reliability Machine tools Hermetic package, TO46 Controls/drives Integral microlens for efficient fiber coupling Packaging, converting and food processing machines HFD3023-500 Series ABSOLUTE MAXIMUM RATINGS CAUTION Storage temp. -55 C to 125 C -67 F to 257 F PRODUCT DAMAGE Case operating temp. -40 C to 85 C -40 F to 185 F The inherent design of this component causes it to be sensitive Lead solder temp. 260 C, 10 s to electrostatic discharge (ESD). To prevent ESD-induced Supply voltage +6 V damage and/or degradation to equipment, take normal ESD precautions when handling this product. Failure to comply with these instructions may result in RECOMMENDED OPERATING CONDITIONS product damage. Supply voltage +4.5 V to +5.5 V Optical input power 3 W to 100 W Optical signal pulse width <100 ns Optical signal edges <20 ns ELECTRO-OPTICAL CHARACTERISTICS (Case T = 25 C 77 F ) Parameter Test Condition Symbol Min. Typical Max. Unit High level logic output voltage V 2.4 4.5 V Pin < 0.1 W, R = 560 OH L Low level logic output voltage V 0.25 0.5 V Pin > 3 W, R = 560 OL L Supply current 1 Pin > 3 W Icc1 13 15 mA Supply current 2 Pin < 0.1 W Icc2 4.5 6.5 mA Minimum input sensitivity P 2.0 3.0 W = 850 nm into 100/140 m optical fiber in (peak) f = 2.5 MHz, 50 % dc, PWD < 10% -27.0 -25.2 dBm Response time 10 % - 90 %, Pin < 10 W t 6 9 ns r Vo = 0.5 V to 2.4 V, R = 560 t 6 9 ns f L Pulse width distortion f = 2.5 MHz, DC = 50 % PWD Pin = 3 W peak, 5 10 % Pin = 80 W peak 25 25 % FIGURE 1. BLOCK DIAGRAM FIGURE 2. SWITCHING WAVEFORM FIGURE 3. PULSE WIDTH DISTORTION VS OPTICAL INPUT POWER 40 V 0.1 F 100 % CC BYPASS (PIN 1) f = 2.5 MHz OPTICAL 50 % Duty Cycle INPUT 30 PULSE R 50 % L WIDTH LIGHT 20 SCHOTTKY INPUT OUTPUT 0 % (PIN 3) 100 % 10 2.4 V PULSE 50 % GROUND 0 WIDTH (PIN 2 AND PIN 4) ELECTRICAL OUTPUT 0.5 V -10 0 % 1 2 5 10 20 50 100 200 500 1000 t t r f P - Peak Optical Input Power (W) in FIGURE 4. PULSE WIDTH FIGURE 5. PULSE WIDTH FIGURE 6. PROPAGATION DELAY TIME DISTORTION VS TEMPERATURE DISTORTION VS FREQUENCY VS PEAK OPTICAL INPUT POWER 40 40 100 T = 25 C f = 2.5 MHz Square Wave f = 2.5 MHz A T = 5.0 V 50 % Duty Cycle CC 30 30 80 P = 10 Ohm P = 10 W Peak IN IN P OHL 20 20 60 10 10 40 P OLH T = 25 C A T = 5.0 V CC 0 0 20 R = 560 Ohm L -10 -10 0 -50 -25 0 25 50 75 100 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 1 2 5 10 20 50 100 200 500 1000 P - Peak Optical Input Power (W) T = Case Temperature (C) f - Frequency (MHz) in A 2 www.honeywell.com/sensing PWD - Pulse Width Distortion (%) PWD - Pulse Width Distortion (%) PWD - Pulse Width Distortion (%) PD - Propogation Delay Time (ns)