查询LSA2825供应商
Analog Coaxial Pigtailed
Laser Module
Technical Data
LSA2825 - Analog
Coaxial Laser
LSA3821 - Dual-in-Line
Package
Features
• Compact Coaxial Package
• Strained Multi Quantum
Well (SMQW) Laser Chip
• Low Thresholds Current and
Operating Currents
• Wide Operating Temperature –40°C to +85°C
• Optical Power May Be
Customized up to 2 mW
• Convenient Variety of
Pinout and Mounting Flange
Options
Applications
• CATV/CCTV
• Return Path Links
• LANS/WANS
Description
The LSAX82X is a compact
analog coaxial pigtailed laser
transmitter, operating in the
1300 nm wavelength region and
coupling light to single mode
fiber.
The device features a high
reliability SMQW laser diode and
rear facet monitor photodiode.
These are electrically connected
to four pins in an industrystandard configuration.
Environmental performance is
designed to be compatible with
the requirements of Bellcore’s
TA-NWT-000983 document.
If the specific arrangement or
performance you require is not
listed, please contact your local
representative, as our highly
flexible design and manufacturing
processes allow both physical and
electro-optical customization to
meet your needs.
Laser Safety Warning
This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid
possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.
526
5965-7337E (5/97)
Absolute Maximum Ratings
Absolute limiting (maximum) ratings mean that no catastrophic damage will occur if the product is subjected to these ratings for short periods,
provided that each limiting parameter is in isolation and all other parameters have values within the performance specification. It should not be
assumed that limiting values of more than one parameter can be applied to the product at the same time.
Limits
Parameter Symbol Test Condition Min. Max. Units
Laser Forward Current If DC 120 mA
Laser Reverse Voltage Vlr DC 2 V
Photodiode Reverse Voltage Vr DC 20 V
Photodiode Forward Current Ipf DC 1 mA
Operating Temperature Tc Temperature measured at case –40 +85 °C
Storage Temperature Ts –40 +85 °C
Relative Humidity RH noncondensing %RH
Fiber Pull Strength Three times; 10 sec. 10 N
Mechanical Shock MIL-STD-883D, Method 2002, 500 G
Condition A
Vibration MIL-STD-883D, Method 2007, 20 G
Condition A
Performance Specifications
LSA2825
LSA3821
Parameter Symbol Test Condition Min. Max. Units
LASER CW, Tc = –40°C to +85°C, Po as
noted below unless otherwise
stated
Rated Optical Power Po CW 1.0 mW
Threshold Current Ith Tc = +25°C 3.5 10 mA
Threshold Current Ith 1 30 mA
Slope Efficiency η Tc = +25°C3080µW/mA
Drive Current above Ith, Id Tc = +25°C 12.5 33.3 mA
for Im = Im (Po, +25°C)
Forward Voltage Vf 1.6 V
Center Wavelength λ Tc = +25°C 1286 1336 nm
Wavelength/Temperature ∆λ/∆T 0.4 nm/°C
Coefficient
Spectral Width σ One sigma, RMS 2.5 nm
MONITOR PHOTODIODE Tc = +25°C, Vr = 5 V
Photocurrent Im 200 1000 µA
Dark Current Id Po = 0 µW20nA
Capacitance C 1 MHz 10 pF
Tracking Error DP Im = Im (Po, +25°C) –1 +1 dB
Tc = –40°C to +85°C1055mA
Tc = –40°C to +85°C 1260 1360 nm
Tc + –40°C to + 85°C
527
Other Documentation
1. SMQW Laser Reliability Report – Publication Number 5965-1293E
2. LST282X/292X Characterization Report – Publication Number 5965-5374E
Analog Specifications
Parameter Symbol Test Conditions Min. Max. Unit
Relative Intensity RIN Po = 1 mW, Tc = –40°C to +85°C –135 dB/Hz
Noise (RIN)
2nd Order Distortion - Tc = +25°C, Po = 1 mW, OMD = 35% –43 dBc
Two tone test: F1 = 13 MHz, F2 = 19 MHz,
20 km fiber, Total loss = 9 dB, F1 ± F
3rd Order Distortion - Tc = +25°C, Po = 1 mW, OMD = 35% –50 dBc
Two tone test: F1 = 13 MHz, F2 = 19 MHz,
20 km fiber, Total loss = 9 dB,
2F1 ± F2, 2F2 ± F
1
2
Fiber Pigtail
Parameter Minimum Maximum Units
Fiber Pigtail Length 1000 mm
Spot Size (Mode Radius) 4.5 5.5 µm
Cladding Diameter 122 128 µm
Core/Cladding Concentricity 1 µm
Secondary Jacket Diameter 0.8 1 mm
Effective Cutoff Wavelength 1150 1240 nm
Reliability Target
Parameter Condition Min. Max. Units
Median Life 50% inc. in total drive current, Tc = +25°C 2x10
528
5
hours
Example of LSA2825-T – All dimensions in mm.
B
CO
E
5.3
2.0
K
DIM.
M
N
O
P
Q
R
H
0.4
A
G
F
12.2
2.6
12.9
Q
G
H
K
L
D
P – PIN DIAMETER
DIM. DIM. MIN. TYP. MAX.
MIN. TYP. MAX.
A
B
C
D
E
F
OTHER FLANGE OPTIONS ARE AVAILABLE.
7.4
17.0
11.8
3.7
2.4
12.5
PINOUT
I
J
R
MIN. TYP.
12.0
I
J
2.1
1000
0.9
5.3
2.0
0.5
1.25
0.5
M
N
L
41
CASE
LASER
32
PHOTODIODE
LST2825
PIN
1
2
3
4
FUNCTION
MONITOR ANODE (-VE)
MONITOR CATHODE (+VE)
LASER CATHODE (-VE)
LASER ANODE (+VE)
529
LSA3821 Specification – All dimensions in mm.
D
4
3
A
C
B
E
2
1
G
H
5
6
7
8
PIN 1 INDICATOR
F
I
M
C/L
J
K
CASE
4
3
2
PHOTODIODE
1
TYP.
DIM.
12.60
A
7.62
B
2.54
C
30.00
D
ALL DIMENSIONS IN MILLIMETERS
DIM.
E
F
G
H
5
6
7
8
TYP.
10.20
12.60
4.26
3.53
LASER
DIM.
K
M
PIN
1
2
3
4
5
6
7
OPTION 1
TYP.
2.54
I
8.60
J
3.20
1000
8
NOTE:
PINS 1, 4, 5, AND 8 ARE ISOLATED
FROM THE INTERNAL CIRCUITRY,
BUT ARE ELECTRICALLY CONNECTED
TO EACH OTHER.
PINS 1, 4, 5, & 8 – 0.51 x 0.38 NOM.
PINS 2, 3, 6, & 7 – 0.4/0.5 DIA.
FUNCTION
NO CONNECTION
MONITOR ANODE (-VE)
MONITOR CATHODE (+VE)
NO CONNECTION
NO CONNECTION
LASER CATHODE (-VE)
LASER ANODE (+VE)
(CONNECTED TO HEADER)
NO CONNECTION
530
Ordering Information
Coaxial Package
LSA2825 - Y - ZZ
LSA3821 - ZZ
Connector Type:
AP = Angle polished FC/PC
AS = Angle polished SC/PC
US = Ultra polished SC/PC
SF = Superpolished FC/PC
Flange:
B = Without mounting flange
T = Universal flange
Connector Type:
AP = Angle polished FC/PC
AS = Angle polished SC/PC
US = Ultra polished SC/PC
SF = Superpolished FC/PC
CDRH Certification
Hewlett-Packard Ltd.
Whitehouse Road
Ipswich, Suffolk IP1 5PB
England
Manufactured:_______ Serial No:__________
Model No: _______
This product conforms to the applicable
requirements of 21 CFR 1040 at the date of
manufacture.
531
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