cxa2652em Sony Electronics, cxa2652em Datasheet - Page 2

• Manufacturer Part Number: cxa2652em
• Manufacturer: Sony Electronics

Figure 1 Optical Pickup Structure
Figure 2 CXA2660N Block Diagram
V
Vcc
Vc
LIM
H
A
B
F
Laser diode
*
1
2
3
4
5
6
7
The block diagram of the CXA2663N is identical to that of
the earlier product, the CXA2637N.
Objective
3
3
3
3
100k
lens
1.2k
1.2k
1.2k
1.2k
Grating
V
V
V
V
A'
B'
LIM
LIM
LIM
LIM
WRF = (A' + B' + C' + D')
h
a
b
f
A'
B'
C'
D'
Beam spliter
CXA2660N/2663N
g
d
c
e
RRF = A + B + C + D
V
V
V
V
CXA2652EM/AEM/BEM
D'
C'
Disc
LIM
LIM
LIM
LIM
C
D
A
B
0.2625
1.2k
1.2k
1.2k
1.2k
0.2625
1
3
3
3
3
14
13
12
11
10
9
8
GND
G
D
C
E
RRF
WRF
CXA2660N
CXA2663N
Figure 4 CXA2652EN/AEN/BEN Block Diagram
Table 2
Figure 3 CXA2660N Photodetector Pattern Dimensions
Table 1
CXA2652EM
CXA2652AEM
CXA2652BEM
The photodetector pattern of the CXA2663N is identical to
that of the earlier product, the CXA2637N.
CXA2652EN/AEN/BEN Photodetector Pattern
Dimensions (diameter)
CXA2660N and CXA2663N Pulse Response
Characteristics
GND
Vcc
Vc
Slew rate
400 V/ s
350 V/ s
1
2
3
0.70 mm
0.36 mm
0.47 mm
0.1 F
0.1 F
Photodiode
12 ns for a 1.9 V amplitude
10 ns for a 1.5 V amplitude
Top view
Settling
4.4 k
900
200
45 deg.
6
5
4
V
V
IV
OUT
IN
OUT
VR