NEC's
φ
µ
m
φ80µ
InGaAs PIN-PD IN COAXIAL PACKAGE
NR7800 SERIES
FOR 155Mb/s AND 622 Mb/s APPLICATIONS
FEATURES
•
SMALL DARK CURRENT:
I
D
= 0.1 nA
•
HIGH SPEED RESPONSE:
fc = 2.5 GHz MIN.
• HIGH SENSITIVITY:
S = 0.89 A/W AT
λ
= 1310 nm
S = 0.94 A/W AT
λ
= 1550 nm
•
LOW OPERATING VOLTAGE:
V
R
= 5 V
• COAXIAL MODULE WITH SINGLE MODE FIBER (SMF)
or GI-50 fiber
• WITH SC CONNECTOR: Standard, FC connector: option
(Refer to Ordering Information)
DESCRIPTION
NEC's NR7800 Series are InGaAs PIN photo diode (PIN-PD)
coaxial modules with optical fiber pigtail. These modules are
designed for long wavelength optical communication systems
and are ideal as recievers for Synchronous Digital Hierarchy
(SDH) system, STM-4 and STM-1, ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 40° C to +85º C, unless otherwise specified)
PART NUMBER
SYMBOLS
I
D
C
t
S
PARAMETERS AND CONDITIONS
Dark Current, V
R
= 5 V, T
C
= 25º C
V
R
= 5 V
Terminal Capacitance, V
R
= 5 V, f = 1 MHz, T
C
= 25º C
Sensitivity, V
R
= 5 V,
λ
= 1310 nm
V
R
= 5 V,
λ
= 1550 nm
Temperature Dependence of Sensitivity,
V
R
= 5 V,
λ
= 1550 nm
Polarization Dependence of Sensitivity,
V
R
= 5 V,
λ
= 1550 nm, T
C
= 25º C
Wavelength Dependence of Sensitivity,
V
R
= 5 V,
λ
= 1520 to 1560 nm, T
C
= 25º C
Cut-off Frequency, V
R
= 5 V, T
C
= 25º C
Optical Return Loss,
SMF
GI-50 Fiber
UNITS
nA
pF
A/W
%
%
%
GHz
dB
0.78
0.80
-5
-2.5
-2.5
2.5
30
28
MIN
NR7800 SERIES
TYP
0.1
1.0
0.89
0.94
5
2.5
2.5
MAX
1.0
20
1.5
∆
S
t
∆
S
p
∆
S
w
fc
ORL
California Eastern Laboratories
CEL [ CALIFORNIA EASTERN LABS ]
