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EMCORE

7820A Datasheet Preview

7820A Datasheet

CATV Optical Receiver

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7820A CATV Optical Receiver
1 GHz
DATASHEET | MARCH 2012
Applications
Video Signal Distribution in HFC and
FTTx nodes
Video Overlay in Passive Optical
Networks (PON).
Features
5 Wide 40 MHz – 1002 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 (4.5 pA/Hz typ.) Low Power
Dissipation (0.75 W max.) as well as
High RF Output.
RoHS Compliant
Internal Prorietary Impedance Match
Circuitry (75)
Robust Small Package with Single-Mode
Fiber Pigtail and Connector Options
Wide Operating Case Temp Range, -30O
to + 85OC
FIBER OPTICS
The 7820A 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.
The 7820A exhibits excellent distortion performance with values well above
standards over the entire bandwidth and case temperature specifications (40 MHz
– 1002 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 7820A CATV optical receiver can be used in both 1310 nm and 1550 nm
applications being useful at different points of a given network.
The 7820A 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 – 1002 MHz
-80 dBc (typ)
-68 dBc (typ)
Up to +3dBm
1260 – 1620 nm
0.85 W
| REV 2012.03
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.
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EMCORE

7820A Datasheet Preview

7820A Datasheet

CATV Optical Receiver

No Preview Available !

7820A CATV Optical Receiver
1 GHz
DATASHEET | MARCH 2012
FIBER OPTICS
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
Optical Power
Optical Return Loss
DC Power
+5V Amp Bias, (Pin 2)
+12V PD Bias, (Pin 6)
Wavelength
PIN
RLOPT
ICCA
ICCP
λ
Responsivity --
PDI Monitor Voltage
Dissipation P
VMON
DISS --
Min
--
40
--
--
1260
--
--
--
Typ
-- +3
--
--
--
1310/1550
>0.85 at 1310 nm
>0.95 at 1550 nm
0.5
--
Max
--
160
3
1620
--
--
--
0.85
Unit
dBm
dB
mA
mA
nm
mA/mW
mA/mW
V/mA
W
RF Characteristic
Parameter
Symbol
Min
Typ
Max Unit
Frequency Response
BW 5
--
1002
MHz
Gain (Ref @ 40MHz)
G 28
--
20 dB
Gain Stability
(-30C to + 85C)
GST -0.5
--
+0.5
dB
Ripple (40 MHz – 1002 MHz)
--
--
1 1.2 dBpk-pk
Gain Tilt
-- -- 1 2 dB
RF Output Level (2)
RFOUT
22
--
24 dBmV/ch
Output Return Loss
(40 – 1002 MHz)
RL --
-- -14 dB
Equivalent Input Noise
EIN --
-- 4.5 pA/Hz
Discrete Second-Order (1) DSO
-- -70 -67 dBc
Discrete Third Order (1,3)
DTO
--
-85 -80 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 2012.03
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.


Part Number 7820A
Description CATV Optical Receiver
Maker EMCORE
PDF Download

7820A Datasheet PDF






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