7840A DOCSIS 3.1 Low Noise CATV Optical Receiver DATASHEET | FEBRUARY 2015 FIBER OPTICS The 7840A DOCSIS 3.1 Low Noise CATV 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 digital signals for a range of video broadcast options, and delivers the corresponding RF electrical output. The wide bandwidth supports the delivery of up to 110 CATV analog signals or a combination of analog and digital channels (80/30 for example), including HDTV broadcast. Applications Video Signal Distribution in HFC and FTTx nodes Video Overlay in Passive Optical Networks (PON). Features 5 Wide 40 MHz – 1200 MHz Bandwidth Supports as Many as 110 CATV Analog Channels or a Combination of Analog and Digital Channels Including HDTV Broadcast. Excellent RF Frequency and Distortion Characteristics for High Linearity. Low Noise (3.9 pA/√Hz typ.) Low Power Dissipation (0.75 W max.) as well as High RF Output. The 7840A DOCSIS 3.1 exhibits excellent distortion performance with values well above standards over the entire bandwidth and case temperature specifications (40 MHz – 1200 MHz, -30 °C to +85 °C). Moreover, the proprietary impedance-match circuitry between the photodetector and RF amplification stages resolves a number of OEM design obstacles with very low noise performance value, typically less than 4.5 pA/√Hz. The 7840A DOCSIS 3.1 Low Noise CATV optical receiver can be used in both 1310 nm and 1550 nm applications being useful at different points of a given network. The 7840A DOCSIS 3.1 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 RoHS Compliant Parameter Internal Prorietary Impedance Match Circuitry (75Ω) Frequency Range Limits 40 – 1200 MHz CTB (79ch NTSC) -80 dBc (typ) Robust Small Package with Single-Mode Fiber Pigtail and Connector Options CSO (79ch NTSC) -68 dBc (typ) Wide Operating Case Temp Range, -30O to + 85OC Wavelength Optical Input Power Power Consumption Up to +3 dBm 1260 – 1620 nm 0.85 W | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver FIBER OPTICS DATASHEET | FEBRUARY 2015 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause 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 the 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 TCASE -30 85 °C Storage Temperature Range Tstg -40 85 °C Humidity at 85 °C RH -- 85 % Note: For all tables, typical values are performed at 25oC; min and max values are performance vs. temperature. Electrical/Optical Characteristics Parameter Symbol Min Typ Max Unit PIN -- -- +3 dBm RLOPT 40 -- -- dB ICCA ICCP --- --- 160 3 mA mA Wavelength λ 1260 1310/1550 1620 nm Responsivity -- --- >0.85 at 1310 nm >0.95 at 1550 nm --- mA/mW mA/mW PDI Monitor Voltage VMON -- 1.0 -- V/mA Dissipation PDISS -- -- 0.85 W Symbol Min Typ Max Unit Frequency Response BW 5 -- 1200 MHz Gain (Ref @ 40MHz) G 18 -- 22 dB GST -0.5 -- +0.5 dB Ripple (40 MHz – 1200 MHz) -- -- 1 1.2 dBpk-pk Gain Tilt -- -- 1 2 dB RFOUT 22 -- 24 dBmV/ch RL -- -- -14 dB EIN -- -- 3.9 pA/√Hz Optical Power Optical Return Loss DC Power +5V Amp Bias, (Pin 2) +12V PD Bias, (Pin 6) RF Characteristic Parameter Gain Stability (-30°C to + 85°C) RF Output Level (2) Output Return Loss (40 – 1200 MHz) Equivalent Input Noise Discrete Second-Order Discrete Third Order (1) (1,3) DSO -- -63 -60 dBc DTO -- -73 -70 dBc (1) Two laser test at 1310 nm/1550 nm. 40% OMI/tone. Total received optical power = 0 dBm. Distortion products measured at 40 and 200 MHz. (2) Optical Input = 0 dBm, OMI = 20% (3) DTO may degrade to -77 dBc above 800 MHz | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver DATASHEET | FEBRUARY 2015 FIBER OPTICS Outline Drawing (dimensions are in inches & mm) | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver DATASHEET | FEBRUARY 2015 FIBER OPTICS | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver FIBER OPTICS DATASHEET | FEBRUARY 2015 Pin Definitions Pin Function 1 2 3 4 5 6 7 8 GND +5V GND RF OUT GND +12V PD MONITOR GND | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver FIBER OPTICS DATASHEET | FEBRUARY 2015 Ordering Code Definitions 7840A-yy-zzz Family Name 7840A DOCSIS 3.1, 1 GHz Low Noise CATV Optical Receiver Optical Connector yy = SA: SC/APC Fiber Length (L) zzz = 115: 1.15 m Example: 7840A-SA-115: 1 GHz Low Noise CATV Optical Receiver, SC/APC Connector, 1.15m Fiber | REV 2015.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.