NEC's
φ
µ
m
φ50µ
InGaAs PIN-PD
IN COAXIAL PACKAGE
FOR 2.5 Gbp/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)
NR7500 SERIES
DESCRIPTION
NEC's NR7500 Series is an InGaAs PIN photo diode (PIN-PD)
coaxial module with optical fiber pigtail. This module is de-
signed for long wavelength 2.5 Gb/s optical fiber communica-
tion systems and is ideal as a reciever for Synchronous Digital
Hierarchy (SDH) system, STM-16, ITU-T recommendations.
ELECTRO-OPTICAL CHARACTERISTICS
(T
C
= 40° C to +85º C, unless otherwise specified)
PART NUMBER
SYMBOLS
I
D
C
t
S
fc
ORL
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
Cut-off Frequency, V
R
= 5 V, T
C
= 25º C
Optical Return Loss
SMF
GI-50 Fiber
GHz
dB
pF
A/W
0.78
0.80
2.5
30
28
0.7
0.89
0.94
UNITS
nA
MIN
NR7500 Series
TYP
0.1
MAX
1.0
20
0.9
California Eastern Laboratories
CEL [ CALIFORNIA EASTERN LABS ]
