Fiber Optic Components High-speed TTL Receiver HFD7000-2XX Series FEATURES Designed to meet industrial LAN (Local Area Network) specifications Converts optical input into an electrical signal Typical sensitivity at 660 nm is -21 dBm Single 5 V supply High-speed (dc to 16 Mbps) Metal SMA barrel for high mechanical stability Separate grounding of the barrel provides excellent The HFD7000 Series are high-speed optical receivers designed for data RFII/EMI/ESD shielding transmission in industrial LAN applications. The monolithic CMOS chip Low-cost plastic version (HFD7000-212) available consists of a large area photodiode, pre-amplifier with controlled gain, a post PIN-compatible with amplifier, a comparator and TTL output stage. The integrated voltage Honeywells HFD3403 5 regulator provides easy use in many applications. Mbps receiver The chips silicon material is optimized for 660 nm operation The on-chip controlled gain provides a wide dyanmic range and low pulse width distortion (PWD). The chip is mounted in a metal TO-18 package. In addition, the outer package of the HFD7000-202 has a metal barrel for high mechanical stability and excellent shielding against RFI/EMI and ESD. This feature allows the receiver to operate in harsh environments. The receiver is designed to work with Honeywells high-speed 660 nm transmitter, the HFE 7000. For maximum performance of this receiver, a 0.1 F capacitor must be mounted between Vcc and ground no more than 3,0 mm 0.12 in away from the housing. A 4.7 resistor in series with Vcc increases the filters performance. This minimizes external noise and allows the maximum sensitivity to be maintained. WARNING PERSONAL INJURY DO NOT USE these products as safety or WARNING emergency stop devices, or in any other application MISUSE OF DOCUMENTATION where failure of the product The information presented in this product sheet is for reference only. Do could result in personal not use this document as a product installation guide. injury. Complete installation, operation, and maintenance information is Failure to comply with provided in the instructions supplied with each product. these instructions could Failure to comply with these instructions could result in death or result in death or serious serious injury. injury. Sensing and Control Fiber Optic Components High-speed TTL Receiver HFD7000-2XX Series OPERATION FIGURE 1: SPECTRAL SENSITIVITY Optical power (photons) from the fiber strikes the A/W n+/p-sub active area of the photodiode and is converted to an 0.5 electrical signal. The current is then converted to a voltage in the transimpedance pre-amplifier. The 0.4 controlled gain limits the light current created by the photodiode in both the transimpedance pre-amplifier and in the post-amplifier. This avoids a possible 0.3 overcharge of the amplifier and assures optimum PWD performance. 0.2 The signal is compared with a threshold defining the systems sensitivity limit. A final buffer provides a TTL output. The level sensitive behavior makes the 0.1 system robust with respect to the external interference (e.g. current/voltage spikes). The 0 regulator supplies the entire system to ensure high 300 400 500 600 700 800 900 100011001200 rejection of power supply noise. (nm) ABSOLUTE MAXIMUM RATINGS (25 C 77 F free air temperature unless otherwise noted.) NOTICE Storage -40 C to 100 C -40 F to 212 F Stresses greater than those listed under Absolute temperature Maximum Ratings may cause permanent damage Lead solder 10 s at 260 C 500 F to the device. temperature This is a stress rating only and functional Supply voltage 6 V operation of the device at these or any other Junction 150 C 302 F temperature conditions above those indicated in the operational section of this specification is not implied. RECOMMENDED OPERATING CONDITIONS Exposure to absolute maximum rating conditions Operating 0 C to 70 C 32 F to 158 F Temperature for extended periods of time may affect reliability. Supply voltage 4.75 V to 5.25 V Failure to comply with these instructions could Optical input -20 dBm to -5 dBm result in death or serious injury. power TABLE 1: ELECTRO-OPTICAL CHARACTERISTICS (T = 25 C 77 F , V = 5 V unless noted) C CC Parameter Test Condition Symbol Min. Typical Max Unit . Data rate dc dc 16 Mbps Current consumption Icc 45 mA 660 nm Max. received power/optical level LOW 1 mm/POF P -31 dBm RmaxL Max. received power/optical level HIGH 1 mm/POF P -5 dBm RmaxL Max. received power/optical level HIGH 1 mm/POF P -20 dBm RminH Output voltage high I = 2 mA 20 pf load V 2.4 V OH OHIGH Output voltage low I = 2 mA 20 pf load V 0.4 V OL OLOW Rise time 10 % - 90 % t 6 10 ns r Fall time 90 % - 10 % t 8 10 ns f Pulse width distortion f = 8 MHz, 50 % duty PWD 22 ns cycle, P = -20 dBm oIN to -5 dBm (average) Dynamic range 15 dB Bit error rate BER <10-9 2 Honeywell Sensing and Control