NEC's φ φ
φ φ
φ80µµ
µµ
µm
InGaAs PIN-PD IN COAXIAL PACKAGE
FOR 155Mb/s AND 622 Mb/s APPLICATIONS NR7800 SERIES
FEATURES
•SMALL DARK CURRENT:
ID = 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:
VR = 5 V
•COAXIAL MODULE WITH SINGLE MODE FIBER (SMF)
or GI-50 fiber
•WITH SC CONNECTOR: Standard, FC connector: option
(Refer to Ordering Information)
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.
DESCRIPTION
PART NUMBER NR7800 SERIES
SYMBOLS PARAMETERS AND CONDITIONS UNITS MIN TYP MAX
IDDark Current, VR = 5 V, TC = 25º C nA 0.1 1.0
VR = 5 V 20
CtTerminal Capacitance, VR = 5 V, f = 1 MHz, TC = 25º C pF 1.0 1.5
SSensitivity, VR = 5 V, λ = 1310 nm A/W 0.78 0.89
VR = 5 V, λ = 1550 nm 0.80 0.94
∆
StTemperature Dependence of Sensitivity, % -5 5
VR = 5 V, λ = 1550 nm
∆
SpPolarization Dependence of Sensitivity, % -2.5 2.5
VR = 5 V, λ = 1550 nm, TC = 25º C
∆
SwWavelength Dependence of Sensitivity, % -2.5 2.5
VR = 5 V, λ = 1520 to 1560 nm, TC = 25º C
fc Cut-off Frequency, VR = 5 V, TC = 25º C GHz 2.5
ORL Optical Return Loss, SMF dB 30
GI-50 Fiber 28
ELECTRO-OPTICAL CHARACTERISTICS (TC = 40° C to +85º C, unless otherwise specified)
California Eastern Laboratories
Dark Current, I
D
(nA)
TEMPERATURE DEPENDENCE
OF DARK CURRENT
ABSOLUTE MAXIMUM RATINGS1
(TC = 25°C, unless otherwise specified)
SYMBOLS PARAMETERS UNITS RATINGS
VRReverse Voltage V 20
IFForward Current mA 10
PIN Optical Input Power mW 8
TCOperating Case Temp. °C -40 to +85
TSTG Storage Temperature °C -40 to +85
TSLD Lead Soldering Temp. °C260 (10 sec.)
RH Relative Humidity % 85
(noncondensing)
WAVELENGTH DEPENDENCE OF
QUANTUM EFFICIENCY
Sensitivity (Relative Value), ∆S/S (%)
Operating Case Temperature, TC (°C)
Reverse Voltage, VR (V)
Dark Current, I
D
(nA)
REVERSE VOLTAGE DEPENDENCE
OF DARK CURRENT
Quantum Efficiency, η (%)
Wavelength, λ (µm)
TYPICAL PERFORMANCE CURVES (TC = 25°C, unless otherwise specified)
TEMPERATURE DEPENDENCE OF
SENSITIVITY
Note:
1. Operation in excess of any one of these parameters may result
in permanent damage.
NR7800 Series
100
80
60
40
20
00.9 1.71.61.51.41.31.21.11.0
10
0
-10
-60 -40 -20 0 20 40 60 80 100
λ = 1310 nm
T
C
= 75°C
25°C
0°C
-25°C
50°C
10
1.0
0.1
0.01
0.001 100 20
V
R
= 5 V
10
1.0
0.1
0.01
0.001
-60 -40 -20 0 20 40 60 80 100
Operating Case Temperature, TC (°C)
Remark:The graphs indicate nominal characteristics.
NR7800 Series
TYPICAL PERFORMANCE CURVES (TC = 25°C, unless otherwise specified)
1. Anode (Negative)
2. Cathode (Positive)
3. Case
Remark:The graphs indicate nominal characteristics.
NR7800BFP/FR
OUTLINE DIMENSIONS (Units in mm)
FREQUENCY RESPONSE
Response (dB)
Frequency, f (GHz)
REVERSE VOLTAGE DEPENDENCE
OF TERMINAL CAPACITANCE
Terminal Capacitance, C
t
(pF)
Reverse Voltage, VR (V)
NR7800CP/CR
5
0.5
1
1001010.10.01
f = 1.0 MHz
VR = 5 V
λ = 1310 nm
RL = 50 Ω
05.0
2.5
12
9
6
3
0
-3
-6
-9
-12
-15
12.7±0.2
17.0±0.2
ø2.2
ø0.9
ø3.2±0.2
ø7.0±0.2
ø5.0±0.2
1.2±0.2
4.0±0.2
10.5±1.0
14.0±1.0
3.7±0.3
1.0±0.1
P.C.D. = ø2.0
7.2±0.3
24.7±1.0
4.0±0.5
3.2
3
21
1
3
2
ø0.45±0.05
2.2
3.5±0.5
Optical Fiber
Length: 1 m MIN
16.0±0.2
11.2±1.0
25.4±1.0
4.0±0.5
ø3.2±0.2
ø0.9
ø5.0±0.2
Optical Fiber
Length: 1 m MIN
3.5±0.5
14.0±1.0
0.5
0.5±0.1
ø0.45±0.05
3
21
1
3
2
7.0±0.2
12.0±0.1
8.5±0.2
2 – ø2.5
4–R1.25±0.2
P.C.D. = ø2.0
1. Anode (Negative)
2. Cathode (Positive)
3. Case
NR7800 Series
OPTICAL FIBER CHARACTERISTICS
PARAMETER UNITS SPECIFICATION
SMF GI-50
Mode Field Diameter µm9.5±1–
Core Diameter µm–50±3
Cladding Diameter µm125±2125±2
Maximum Cladding Noncircularity % 2 2
Maximum Core/Cladding Concentricity % 1.6 4.0
Outer Diameter mm 0.9±0.1 0.9±0.1
Cut-off Wavelength nm 1100 to 1270 –
Minimum Fiber Bending Radius mm 30 30
Fiber Length mm 1000 MIN 1000 MIN
Flammability UL1581 VW-1
35±2 mm
Fiber Length: 1000 mm MIN
Connector
8.99±0.5 mm
5±2 mm
PART NUMBER FLANGE TYPE FIBER TYPE AVAILABLE CONNECTOR1
NR7800FP-BC Flat mount Flange SMF With FC-UPC Connector
NR7800FP-CC With SC-UPC Connector
NR7800FR-BB GI-50 Fiber With FC-SPC Connector
NR7800FR-CB With SC-SPC Connector
NR7800CP-BC Vertical Mount SMF With FC-UPC Connector
NR7800CP-CC Flange With SC-UPC Connector
NR7800CR-BB GI-50 Fiber With FC-SPC Connector
NR7800CR-CB With SC-SPC Connector
Note:
1. SC Connector: standard
FC Connector: option
ORDERING INFORMATION
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.
A Business Partner of NEC Com
p
ound Semiconductor Devices, Ltd
.
04/02/2003