datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. applications video signal distribution in rfog and fttx nodes video overlay in passive optical networks (pon). features 5 mhz-200 mhz bandwidth supports the return path application. excellent rf frequency, high rf output. low noise (<1.0 pa/ hz typ.) low power dissipation (0.5 w max). rohs compliant internal prorietary impedance match circuitry (75 ? ) robust small package with single-mode fiber pigtail and connector options wide operating case temp range, -40 o to + 85 o c the 7820r rfog return path optical receiver is a single-mode fiber pigtailed module featuring a low-noise, impedance-matched broadband photodiode and rf amplification. the device receives optical analog and/or di gital signals for a range of return path, and delivers the corresponding rf electrical output. the 7820r exhibits excellent noise performance with values well above standards over the entire 200mhz bandwidth and case temperature specifications (-40c to +85c). moreover, the proprietary impedance-matc h circuitry between the photodetector and rf amplification stages resolves a numbe r of oem design obstacles. the device?s noise performance is typically less than 0.75pa/ hz for the 85mhz version and 1pa/ hz for the 200mhz version. the 7820r rfog return path optical rece iver can be used in the optical wavelength range from 1260nm ? 1620nm applications. the 7820r is compliant with all criteria of the restriction of the use of hazardous substances in electrical and electronic equipment (rohs) guidelines 2002/95/ec. performance highlights parameter limits frequency range 5 ? 200 mhz noise 5 ? 85mhz version 5 ? 200mhz version 0.75 pa/ hz (typ) 1.0 pa/ hz (typ) dso (20% omi/tone) -60 dbc (typ) dto (20% omi/tone) -50 dbc (typ) optical input power up to -10dbm wavelength 1260 ? 1620 nm power consumption 0.5 w 7820r optical receive r 5-200 mhz rfog return path
datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. absolute maximum ratings stresses in excess of the absolute maximum ratings can caus e permanent damage to the device. these are absolute stress ratings only. functional operation of the device is not implied at these or any other conditions in excess of those given in th e operational sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter symbol min max unit operating case temperature range t case -40 85 c storage temperature range t stg -40 85 c humidity at 85 c rh -- 85 % note: for all tables, typical values are performed at 25 o c; min and max values are performance vs. temperature. electrical/optical characteristics parameter symbol min typ max unit optical power 5 ? 85mhz version 5 ? 200mhz version p in -- -- -10 -7 dbm optical return loss rl opt 40 -- -- db dc power +5v amp bias, (pin 2) +12v pd bias, (pin 6) i cca i ccp -- -- -- -- 100 1 ma ma wavelength 1260 1310/1550 1620 nm responsivity -- -- -- >0.8 at 1310 nm >0.9 at 1550 nm -- -- ma/mw ma/mw pdi monitor voltage v mon -- 10 -- v/ma dissipation p diss -- -- 0.5 w rf characteristics parameter symbol min typ max unit frequency response bw 5 -- 85 mhz gain (ref @ 5mhz) 5 ? 85mhz version 5 ? 200mhz version g 36 29 -- 38 31 db gain stability (-40 ? c to + 85 ? c) g st -0.5 -- +0.5 db ripple -- -- 1 1.2 dbpk-pk gain tilt (3) -- -- 1 2 db rf output level (2) 5-85 mhz version 5 ? 200 mhz version rf out 37 35 -- 39 37 dbmv/ch 7820r optical receive r 5-200 mhz rfog return path
datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. rf characteristics (continued) parameter symbol min typ max unit output return loss rl -- -- -16 db equivalent input noise 5 ? 85mhz version 5 ? 200mhz version ein -- 0.75 1.0 0.9 1.30 pa/ hz discrete second-order (1,2) dso -- -60 -50 dbc discrete third order (1,2) dto -- -70 -60 dbc (1). two laser test at 1310 nm/1550 nm. 40% omi/tone (before combined). distortion produ cts measured at 40 and 85 mhz. (2). 5 ? 85mhz version, optical input = -10dbm, omi = 20% (after combined) 5 ? 200mhz version, optical input = -7dbm, omi = 20% (after combined) (3). tilt is defined as the delta between 5 ? 85mhz for 7820r-085 and 5 ? 200mhz for 7820r-200. outline drawing (dimensions are in inches & mm) 7820r optical receive r 5-200 mhz rfog return path
datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. 7820r optical receive r 5-200 mhz rfog return path
datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. pin definitions pin function 1 gnd 2 +5v 3 gnd 4 rf out 5 gnd 6 +12v 7 pd monitor 8 gnd 7820r optical receive r 5-200 mhz rfog return path
datasheet | march 2012 fiber optics | rev 2012.03 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. ordering code definitions 7820r-xxx-yy-zzz family name 7820r: rfog return path optical receiver optical connector yy = fa: fc/apc yy = sa: sc/apc yy = su: sc/upc yy = lu: lc/upc yy = la: lc/apc 7820r optical receive r 5-200 mhz rfog return path fiber length (l) zzz = 115: 1.15 0.30m fiber zzz = 066: 0.66 0.02m fiber zzz = 054: 0.54 0.02m fiber example: 7820r-085-sa-115: rfog return path receiver, 5-85 mhz, sc/apc connector, 1.15m fiber bandwidth xxx = 085: 5 ? 85 mhz xxx = 200: 5 ? 200 mhz
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