Product Bulletin OPF2414 December 1997 25 MHz Fiber Optic Receiver Types OPF2414, OPF2414T Features • Low Cost • No Mounting Hardware Required • Wide Temperature Range • Link Distances up to 4 KM • SMA or ST* Style Ports • Wave Solderable Absolute Maximum Ratings (TA = 25o C unless otherwise noted) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55o C to +85o C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40o C to +85o C Lead Soldering Temperature (for 10 sec.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260o C Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to 7.0 V Description PIN The OPF2414 is a low cost high speed fiber optic receiver. The OPF2414 is ideal for fibers as small as 50/125 µm. The lensed optical system keeps the receiver’s response consistent for all fiber sizes. 1 2 3 4 5 6 7 8 The output of the receiver is an analog, low impedance, voltage source capable of driving an amplifier or level translating circuitry for use on various data formats and data rates up to 25MBaud. The receiver is comprised of a high speed, low noise, photodiode coupled to a transimpedance amplifier which produces an output voltage proportional to the input light amplitude. This hybrid approach solves many of the problems of high speed data link designs by placing a pre-amplifier close to the photodiode. The level amplification produced by the transimpedance amplifier makes the output signal much less susceptible to interference which is a problem often found at high data rates an in high EMI environments. FUNCTION N.C. Signal Common N.C. N.C. VCC Common N.C. Bottom View See Mechanical Dimensions page 8-19 for Mechanical Drawings. “T” suffix = Threaded ST* package. This component is susceptible to damage from electrostatic discharge (ESD). Normal static precautions should be taken in handling and assembly of this component to prevent ESD damage or degradation. *ST is a registered trademark of AT&T. Optek Technology, Inc. 1215 W. Crosby Road Carrollton, Texas 75006 8-10 (972) 323-2200 Fax (972) 323-2396 Types OPF2414, OPF2414T Electrical Characteristics (TA = 25o C unless otherwise noted) 4.75 ≤ VCC ≤ 5.25, RLOAD = 511 Ω , Fiber Sizes ≤ 100 Microns, N.A. ≤ 0.35 SYMBOL RP VNO PN PARAMETER Responsivity MIN TYP MAX UNIT 5.1 7 Equivalent Optical Noise Input Power 10.9 mV/µW at 840 nm 12.3 mV/µW at 840 nm, -40oC ≤ TA ≤ +85oC 4.6 RMS Output Noise Voltage TEST CONDITION .30 .36 mV PR = 0 µW .43 mV PR = 0 µW, -40oC ≤ TA ≤ +85oC -43.7 -40.3 dBm .042 .094 µW -12.6 dBm TA = 25oC 55 µW TA = 25oC -14 dBm -40oC ≤ TA ≤ +85oC 40 µW -40oC ≤ TA ≤ +85oC Peak Input Power PR ICC Power Supply Current 3.4 6.0 mA RLOAD = ∞ tr , tf Rise Time, Fall Time (10% to 90%) 14 19.5 ns PR = 10 µW Peak, RLOAD = 511 Ω , CLOAD = 13 pF 2 ns PR = 40 µW Peak, RLOAD = 511 Ω , CLOAD = 13 pF PWD Pulse Width Distortion Optek reserves the right to make changes at any time in order to improve design and to supply the best product possible. Optek Technology, Inc. 1215 W. Crosby Road Carrollton, Texas 75006 (972)323-2200 Fax (972)323-2396 8-11