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CXB1549 Datasheet(PDF) 5 Page - Sony Corporation

Part # CXB1549
Description  Laser Diode Driver
Download  19 Pages
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Manufacturer  SONY [Sony Corporation]
Direct Link  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXB1549 Datasheet(HTML) 5 Page - Sony Corporation

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CXB1549Q
Pad
No.
22
DB
1.6 to 2.4
23
D
1.6 to 2.4
24
VCC2
3.3
25
VBB
2
26
Indicate
0.7 to 1.7
Differential PECL data
inputs pins.
These two inputs are
internally biased by
10k
Ω to VBB.
Positive power supply
pin for Data input circuit.
Reference bias voltage.
(Option)
The analog voltage high
impedance output pin
which indicate of whether
the optical power of
Laser diode is operated
normal
or not. The power output
range has following
relationship.
High Light Indication;
Vo
≥ 1.7V
Nominal Operation;
Vo = 1.2V
Low Light Indication;
Vo
≤ 0.7V
Symbol
Typical voltage [V]
DC
AC
Equivalent circuit
Description
24
22
25
21
300
200
200
10k
10k
300
600
µA
23
600
µA
400
26
100k
VCC
VEE
14k
50
µA
35
µA
35
µA
27
Tset
Selector for output duty
cycle control pin.
This pin controls the
trailing edge of the input
high pulse. Variable
delay limit of that is from
0 to 0.2ns. Duty cycle is
controlled by connected
a resistor value between
Vcc and this pin.
Refer to Fig.1.
VCC
VEE
Rset
27
2.4k
2.4k
20pF
70
µA
140
220
28
RSB
0.5
29
RS
2.5
Window comparator
top/bottom threshold
voltage pin for
LD_ALARM.
The alarm (fail)
threshold assert voltage
can be set by the
external resistor.
Default voltages are
RS equal to 2.5V and
RSB equal to 0.5V.
29
28
VCC
VEE
100
µA
2.5k
20k
5k


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