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LG1627BXC 데이터시트 PDF




Agere Systems에서 제조한 전자 부품 LG1627BXC은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 LG1627BXC 기능
기능 LG1627BXC Clocked Laser Driver
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LG1627BXC 데이터시트, 핀배열, 회로
Data Sheet
May 2001
LG1627BXC Clocked Laser Driver
Features
s High data-rate clocked laser diode driver
s Clock disable mode for data feedthrough
s Adjustable high output current
s Operation up to 3 Gbits/s
Applications
s SONET/SDH transmission systems
s SONET/SDH test equipment
s Optical transmitters
Functional Description
The LG1627BXC is a gallium arsenide (GaAs) laser
diode driver to be used with direct modulated laser
diodes in high-speed non-return-to-zero (NRZ) trans-
mission systems. The device is made in a high-
performance 0.9 µm gate GaAs hetero-junction FET
technology that utilizes high-density MIM capacitors,
airbridge interconnect, and NiCr film precision resis-
tors. The driver includes differential data and clock
inputs. The high-output, low overshoot drive current
and prebias can be set separately. Data retiming is
accomplished by the internal flip-flop, minimizing
jitter on the data. Clocking can be disabled for data
feedthrough. A pulse-width control enables the user
to compensate for laser turn-on delay. A 2.5 V band-
gap reference is required for stable operation over
temperature and varying power supply voltage.
Functional Diagram
VTH
VIN
VIN
CLK
CLK
CLK_E
MOD_E
GND
BG2P5
MK
MK
VPRE
IOUT-PRE
LG1627BXC
VMOD
VSS3
VSS2
VSS1
PWN
PWP
IOUT
Figure 1. Functional Diagram
5-6549(F).b




LG1627BXC pdf, 반도체, 판매, 대치품
LG1627BXC Clocked Laser Driver
Data Sheet
May 2001
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Supply Voltage
Input Voltage
Power Dissipation
Storage Temperature
Operating Case Temperature Range
Symbol
VSS
VI
PD
Tstg
TC
Min
GND
40
0
Max
–5.7
VSS
1
125
100
Unit
V
V
W
°C
°C
Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Parameter
Case Temperature
Power Supply
Symbol
tCASE
VSS
Min
0
–4.7
Max
70
–5.7
Unit
°C
V
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid expo-
sure to electrostatic discharge (ESD) during handling and mounting. Lucent employs a human-body model (HBM)
and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. ESD voltage
thresholds are dependent on the circuit parameters used to define the model. No industry-wide standard has been
adopted for the CDM. However, a standard HBM (resistance = 1500 , capacitance = 100 pF) is widely used and,
therefore, can be used for comparison. The HBM ESD threshold presented here was obtained by using these cir-
cuit parameters.
Table 4. ESD Threshold Voltage
Human-Body Model ESD Threshold
Device
Voltage
LG1627BXC
>200
Mounting and Connections
Certain precautions must be taken when using solder. For installation using a constant temperature solder, temper-
atures of under 300 °C may be employed for periods of time up to 5 seconds, maximum. For installation with a sol-
dering iron (battery operated or nonswitching only), the soldering tip temperature should not be greater than
300 °C and the soldering time for each lead must not exceed 5 seconds. This device is supplied with solder on the
back of the package. For optimum performance, it is recommended to solder the back of the package to ground.
4 Agere Systems Inc.

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LG1627BXC 전자부품, 판매, 대치품
Data Sheet
May 2001
LG1627BXC Clocked Laser Driver
Typical Optical Evaluations and Performance Characteristics (continued)
HORIZONTAL: 60 ps/div, VERTICAL: 1.5 mW/div
Figure 5. Typical Optical Eye-Diagram IOUT = 85 mA; IOUT-PRE = 5 mA
100
90
80
70
60
50
40
30
20
10
0
–5.5
–5.0
–4.5
VMOD (V)
–4.0
Figure 6. Typical IOUT vs. VMOD
Agere Systems Inc.
80
70
60
50
40
30
20
10
0
–5.5
–5.0
–4.5
VPRE (V)
–4.0
–3.5
Figure 7. Typical IOUT-PRE vs. VPRE
5-7676(F)
5-7677(F)r.1
7

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LG1627BXC

LG1627BXC Clocked Laser Driver

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