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