DATASHEET
|
NOVEMBER 13, 2009
7820R RFoG Return Path Optical Receiver
Bandwidth: 5 – 200MHz
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 digital 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
C
C).
specifications (-40° to +85°
Applications
Video signal distribution in
RFoG and FTTx nodes
Video overlay in passive
optical networks (PON)
Moreover, the proprietary impedance-match circuitry between the
photodetector and RF amplification stages resolves a number 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 receiver 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
Frequency Range
Noise
5 – 85MHz Version 0.75 pA/ Hz (typ)
5 – 200MHz Version 1.0 pA/ Hz (typ)
DSO (20% OMI/tone)
DTO (20% OMI/tone)
Optical Input Power
Wavelength
Power Consumption
-60 dBc (typ)
-50 dBc (typ)
Up to -10dBm
1260 – 1620 nm
0.5 W
LIMITS
5 – 200 MHz
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 proprietary impedance
match cirucitry (75 )
Robust small package with
single-mode fiber pigtail and
connector options
Wide operating case temp
range, -40 ° +85 °
to
C
For more information on this and other products:
Contact Sales at Emcore 626-293-3400, or visit www.emcore.com.
7820R RFoG Return Path Optical Receiver
DATASHEET
|
NOVEMBER 13, 2009
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
Operating Case Temperature Range
Storage Temperature Range
Humidity at 85 °
C
Symbol
T
CASE
T
stg
RH
Min
-40
-40
--
Max
85
85
85
Unit
°
C
°
C
%
Note: For all tables, typical values are performed at 25 ° min and max values are performance vs. temperature.
C;
Table 1. Electrical/Optical Characteristics
Parameter
Optical Power
5 – 85MHz Version
5 – 200MHz Version
Optical Return Loss
DC Power
+5V Amp Bias, (Pin 2)
+12V PD Bias, (Pin 6)
Wavelength
Responsivity
PDI Monitor Voltage
Dissipation
--
V
MON
P
DISS
Symbol
P
IN
RL
OPT
I
CCA
I
CCP
Min
--
Typ
--
--
--
--
1310/1550
>0.8 at 1310 nm
>0.9 at 1550 nm
10
--
Max
-10
-7
--
100
1
1620
--
--
--
0.5
Unit
dBm
dB
mA
mA
nm
mA/mW
mA/mW
V/mA
W
40
--
--
1260
--
--
--
--
EMCORE CORPORATION
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7820R RFoG Return Path Optical Receiver
DATASHEET
|
NOVEMBER 13, 2009
Table 2. RF Characteristics
Parameter
Frequency Response
Gain (Ref @ 5MHz)
5 – 85MHz Version
5 – 200MHz Version
Gain Stability
(-40°C to + 85°C)
Ripple
Gain Tilt
(3)
(2)
Symbol
BW
G
Min
5
36
29
-0.5
--
--
37
35
--
--
--
--
Typ
--
--
Max
85
38
31
+0.5
1.2
2
39
37
-16
0.9
1.30
-50
-60
Unit
MHz
dB
G
ST
--
--
RF
OUT
RL
EIN
DSO
DTO
--
1
1
--
--
0.75
1.0
-60
-70
dB
dBpk-pk
dB
dBmV/ch
dB
pA/ Hz
dBc
dBc
RF Output Level
5-85 MHz Version
5 – 200 MHz Version
Output Return Loss
Equivalent Input Noise
5 – 85MHz Version
5 – 200MHz Version
Discrete Second-Order
Discrete Third Order
(1,2)
(1,2)
(1) Two laser test at 1310 nm/1550 nm. 40% OMI/tone (before combined). Distortion products 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.
EMCORE CORPORATION
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