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
NR7500 Series
ABSOLUTE MAXIMUM RATINGS
1
(T
C
= 25°C, unless otherwise specified)
SYMBOLS
V
R
I
F
P
IN
T
C
T
STG
T
SLD
RH
PARAMETERS
Reverse Voltage
Forward Current
Optical Input Power
Operating Case Temp.
Storage Temperature
Lead Soldering Temp.
Relative Humidity
(noncondensing)
UNITS
V
mA
mW
°C
°C
°C
%
RATINGS
20
10
8
-40 to +85
-40 to +85
260 (10 sec.)
85
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
TYPICAL PERFORMANCE CURVES
(T
C
= 25°C, unless otherwise specified)
WAVELENGTH DEPENDENCE OF
QUANTUM EFFICIENCY
TEMPERATURE DEPENDENCE OF
SENSITIVITY
10
Sensitivity (Relative Value),
∆S/S
(%)
100
λ
= 1310 nm
Quantum Efficiency,
η
(%)
80
60
0
40
20
0
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
-10
-60
-40
-20
0
20
40
60
80
100
Wavelength,
λ
(µm)
Operating Case Temperature, T
C
(°C)
REVERSE VOLTAGE DEPENDENCE
OF DARK CURRENT
10
TEMPERATURE DEPENDENCE
OF DARK CURRENT
10
V
R
= 5 V
Dark Current, I
D
(nA)
1.0
T
C
= 75°C
50°C
Dark Current, I
D
(nA)
1.0
0.1
25°C
0.1
0°C
0.01
-25°C
0.01
0.001
0
10
20
0.001
-60
-40
-20
0
20
40
60
80
100
Reverse Voltage, V
R
(V)
Remark:The graphs indicate nominal characteristics.
Operating Case Temperature, T
C
(°C)
NR7500 Series
TYPICAL PERFORMANCE CURVES
(T
C
= 25°C, unless otherwise specified)
REVERSE VOLTAGE DEPENDENCE
OF TERMINAL CAPACITANCE
2
f = 1.0 MHz
FREQUENCY RESPONSE
12
9
6
V
R
= 5 V
λ
= 1310 nm
P
IN
= -10 dB
R
L
= 50
Ω
Terminal Capacitance, C
t
(pF)
1
Response (dB)
3
0
-3
-6
-9
-12
0.5
0.3
0.1
0.3
1
3
10
-15
0
2.5
5.0
Reverse Voltage, V
R
(V)
Remark:The graphs indicate nominal characteristics.
Frequency, f (GHz)
OUTLINE DIMENSIONS
(Units in mm)
NR7500FP/FR
Optical Fiber
Length: 1 m MIN
ø0.9
ø3.2±0.2
3.5±0.5
NR7500CP/CR
Optical Fiber
Length: 1 m MIN
ø0.9
ø3.2±0.2
3.5±0.5
11.2±1.0
4.0±0.5
14.0±1.0
25.4±1.0
4.0±0.5
4.0±0.2
2.2
ø2.2
10.5±1.0
ø7.0±0.2
1.2±0.2
3.2
24.7±1.0
ø5.0±0.2
ø5.0±0.2
ø7.0±0.2
14.0±1.0
0.5±0.1
ø0.45±0.05
0.5
ø0.45±0.05
12.7±0.2
17.0±0.2
16.0±0.2
PIN CONNECTIONS
3.7±0.3
PIN CONNECTIONS
P.C.D. = ø2.0
4–R1.25±0.2
7.0±0.2
P.C.D. = ø2.0
1.0±0.1
3
2
1
3
2
7.2±0.3
1
3
2
3
2
1
1
1. Anode (Negative)
2. Cathode (Positive)
3. Case
2 – ø2.5
8.5±0.2
12.0±0.1
NR7500 Series
OPTICAL FIBER CHARACTERISTICS
PARAMETER
UNITS
SPECIFICATION
SMF
Mode Field Diameter
Core Diameter
Cladding Diameter
Maximum Cladding Noncircularity
Maximum Core/Cladding Concentricity
Outer Diameter
Cut-off Wavelength
Minimum Fiber Bending Radius
Fiber Length
Flammability
µm
µm
µm
%
%
mm
nm
mm
mm
9.5±1
–
125±2
2
1.6
0.9±0.1
1100 to 1270
30
1000 MIN
GI-50
–
50±3
125±2
2
4.0
0.9±0.1
–
30
1000 MIN
UL1581 VW-1
35±2
mm
5±2
8.99±0.5 mm
Connector
Fiber Length: 1000 mm MIN
ORDERING INFORMATION
PART NUMBER
NR7500FP-BC
NR7500FP-CC
NR7500FR-BB
NR7500FR-CB
NR7500CP-BC
FLANGE TYPE
Flat mount Flange
FIBER TYPE
SMF
GI-50 Fiber
Vertical Mount
SMF
GI-50 Fiber
AVAILABLE CONNECTOR
1
With FC-UPC Connector
With SC-UPC Connector
With FC-SPC Connector
With SC-SPC Connector
With FC-UPC Connector
With SC-UPC Connector
With FC-SPC Connector
With SC-SPC Connector
NR7500CP-CC
Flange
NR7500CR-BB
NR7500CR-CB
Note:
1. SC Connector: standard
FC Connector: option
Life Support Applications
These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected
to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify
CEL for all damages resulting from such improper use or sale.
02/24/2003
A Business Partner of NEC Compound Semiconductor Devices, Ltd.
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