7840A-SA-115 Datasheet, PDF (1/6 Pages) Emcore Corporation – RoHS Compliant

7840A DOCSIS 3.1 Low Noise CATV Optical Receiver
DATASHEET | DECEMBER 2015
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.
RoHS Compliant
Internal Prorietary Impedance Match
Circuitry (75Ω)
Robust Small Package with Singlemode
Fiber Pigtail and Connector Options
Wide Operating Case Temp Range, -30^O
to + 85^OC
FIBER OPTICS
The 7840A DOCSIS 3.1 Low Noise CATV Optical Receiver is a singlemode 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.
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
Parameter
Frequency Range
CTB (79ch NTSC)
CSO (79ch NTSC)
Optical Input Power
Wavelength
Power Consumption
Limits
40 – 1200 MHz
-80 dBc (typ)
-68 dBc (typ)
Up to +3 dBm
1260 – 1620 nm
0.85 W
| REV 2015.12
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.