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參數資料
| 型號： | CXB1549Q |
| 廠商： | Sony Corporation |
| 英文描述： | Laser Diode Driver |
| 中文描述： | 激光二極管驅動器 |
| 文件頁數： | 1/19頁 |
| 文件大?。?/td> | 219K |
| 代理商： | CXB1549Q |
CXB1549Q
Laser Diode Driver
Description
The CXB1549Q is a high-speed monolithic Laser
Diode Driver/Current Switch with ECL/PECL input
level. Open collector outputs are provided at the
output pins (Q, QBX) and have the capacity of driving
modulation current of 50mAp-p at a max. data rate of
1.25Gbps (Min.). Along with the modulation current
generator there is the laser diode bias generator
which has capacity of sourcing up to 60mA (Bias).
The laser diode current can be controlled by either a
voltage or current into the bias adjust pin (BiasAdj) and
the bias set pin (SBias), depending on how these
pins are configured. Control of the diode bias current
is achieved through the APC (Automatic Power
Control) circuitry. In order to avoid having a large
current go through the laser diode, this IC also
provides an Activity detector and Power on Reset
functions for Laser Safety. The Activity detector
circuit detects data edge transitions and if no data
transition occur after a certain time period, then both
the modulation and bias current are shutdown.
The Power on Reset circuit holds the modulation
and bias current off for a set period of time while the
system power is applied. Additionally, this IC has an
internal Duty Cycle correction circuit that can control
the falling edge of the input pulse up to a maximum
of 0.2ns (Min.).
Features
Maximum data rate (NRZ): 1.25Gbps
Power on Reset function
Alarm and Shutdown function
Signal Duty cycle correction
Automatic Power Control (APC) for bias current
Activity detector function for laser safety
Power indicate function
Differential PECL inputs or AC coupled inputs
Application
Gbit-ethernet: 1.25Gb/s
SONET/SDH: 622Mb/s
Fibre channel: 532Mb/s, 1.062Gb/s
Absolute Maximum Ratings
Supply voltage
Input voltage
Differential input voltage
Vcc – V
EE
V
IN
–0.3 to +6.0
V
EE
to Vcc
V
V
| V
D
– V
DB
|
0 to 2.5
0 to 80
0 to 70
0 to 5
V
Bias output current
Modulation output current
SBias input/output current
Input bias control current
mA
mA
mA
Iset (Ibiasadj)
0 to 5
mA
Input bias control voltage
Vset (Vbiasadj)
0 to 3
V
Storage temperature
Tstg
–65 to +150
°C
Recommended Operating Conditions
DC power supply voltage
Vcc – V
EE
Operating ambient temperature
Ta
3.14 to 3.46
V
–40 to +85
°C
Structure
Bipolar silicon monolithic IC
– 1 –
E98313B92-PS
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
40 pin QFP (Plastic)
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