SONY CXA1753M

CXA1753M
I-V Photo IC for CD Player
For the availability of this product, please contact the sales office.
Description
The CXA1753M is a photo IC developed as a
photodetector for the optical pickup of CD players.
It has a built-in I-V amplifier, and features low
output impedance for stable output.
• Focus servo
: astigmatic method
• Tracking servo : three-spot method
Features
• I-V amplifier (current-voltage conversion circuit)
• Compact transparent molded package (SOP)
Identical to the shape of conventional photodiodes
Applications
Optical pickup of CD players
Structure
Bipolar silicon monolithic IC
PD-S-14
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC
12
V
• Operating temperature Topr
–20 to +75
°C
• Storage temperature
Tstg
–40 to +85
°C
• Allowable power dissipation
PD
200
mW
Operating Conditions
Supply voltage
VCC
2.8 to 11.0
V
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.
—1—
E93537A79-TE
CXA1753M
Electrical and Optical Characteristics I
Item
Current consumption
Output offset voltage (A-F)
Symbol
ICC
Voff
Output offset voltage difference
∆Voff
Output voltage (A-D)
Output voltage (E, F)
Maximum output voltage (A-D)
Maximum output voltage (E, F)
Frequency response (A-D)
Frequency response (E, F)
VO
VO
Vomax
Vomax
fC
fC
(VCC=3.0 V, VC=1.5 V, Ta=25 °C)
Conditions
In the dark
In the dark
(A+B) – (C+D) In the dark
(A+D) – (B+C) In the dark
(A+C) – (B+D) In the dark
E–F
In the dark
PO=10 µW, λ=780 nm
PO=10 µW, λ=780 nm
PO=100 µW, λ=780 nm
PO=100 µW, λ=780 nm
100 kHz reference, –3 dB
10 kHz reference, –3 dB
Electrical and Optical Characteristics II
Item
Current consumption
Output offset voltage (A-F)
Symbol
ICC
Voff
Output offset voltage difference
∆Voff
Output voltage (A-D)
Output voltage (E, F)
Maximum output voltage (A-D)
Maximum output voltage (E, F)
Frequency response (A-D)
Frequency response (E, F)
VO
VO
Vomax
Vomax
fC
fC
Min.
—
–15
–15
–15
–15
–10
290
610
2.0
2.5
2.0
100
Typ.
2.0
0
0
0
0
0
370
770
2.2
2.9
3.0
400
Max.
2.8
15
15
15
15
10
450
930
—
—
—
—
Unit
mA
mV
mV
mV
mV
mV
mV
mV
V
V
MHz
kHz
(VCC=5.0 V, VC=2.5 V, Ta=25 °C)
Conditions
In the dark
In the dark
(A+B) – (C+D) In the dark
(A+D) – (B+C) In the dark
(A+C) – (B+D) In the dark
E–F
In the dark
PO=10 µW, λ=780 nm
PO=10 µW, λ=780 nm
PO=100 µW, λ=780 nm
PO=100 µW, λ=780 nm
100 kHz reference, –3 dB
10 kHz reference, –3 dB
Min.
—
–15
–15
–15
–15
–10
290
610
4.0
4.5
2.0
100
Note 1 : VC is reference for output voltage and output offset voltage.
Note 2 : GND is reference for maximum output voltage.
Note 3 : Output voltage and frequency response are subject to confirmation of design.
—2—
Typ.
3.5
0
0
0
0
0
370
770
4.2
4.9
2.5
400
Max.
4.5
15
15
15
15
10
450
930
—
—
—
—
Unit
mA
mV
mV
mV
mV
mV
mV
mV
V
V
MHz
kHz
CXA1753M
Measurement Circuit
10kΩ
10kΩ
1
DO
FO 10
2
AO
VCC 9
3
NC
VC 8
4
BO
GND 7
5
CO
EO 6
VCC
10kΩ
VC
10kΩ
10kΩ
10kΩ
Photodetector position
F
AB
D
C
E
0.6
45°
0.52
1
Reference side
Tolerance in position of photodetector center
X, Y : ±0.2
Z
: ±0.2
θ
: ±2°
—3—
Photodetector plane
(Unit : mm)
CXA1753M
0.6±0.2mm from
package center
Photodetector Pattern Dimensions
E
C
5
D
120
B
30
A
45°
50
5
50
F
30
200
120
(Unit : µm)
Circuit Block Diagram
R1
DO 1
R2
–
+
D I-V AMP∗
–
+
B
F
10 FO
∗F I-V AMP
R1
AO 2
–
+
A I-V AMP∗
9 VCC
C
NC 3
8 VC
R1
BO 4
–
+
B I-V AMP∗
7 GND
D
R1
CO 5
R2
–
+
C I-V AMP∗
–
+
A
E
6 EO
∗E I-V AMP
R1=166kΩ, R2=334kΩ
A, B, C, D, E and F are photodiodes
—4—
CXA1753M
Pin Description
Pin No.
Symbol
1
2
4
5
DO
AO
BO
CO
I/O
Equivalent circuit
Description
1
O
Output of voltage signals converted
from optical signals.
2
4
16k
5
400µA
8k
Vc
3
NC
6
10
EO
FO
Common with GND for the package
construction.
O
Output of voltage signals converted
from optical signals.
6
10
16k
100µA
8k
Vc
7
GND
I
For a dual power supply : negative
power supply
For a single power supply : GND
For a dual power supply : GND
For a single power supply : center
voltage input
8
VC
I
9
VCC
I
8
Positive power supply
—5—
CXA1753M
Notes on Operation
1. Connection to RF amplifiers
The CXA1753M features the voltage-output type and the voltage-input type such as the CXA1610M should
be used as RF amplifiers. The noise tolerance will be greatly improved over that of conventional
photodiodes used with current-input RF amplifiers.
2. Power supply
The CXA1753M can be used either with a dual power supply or with a single power supply.
However, this IC is not provided with a center voltage generating circuit, and so when used with a single
power supply the center voltage must be supplied by an RF amplifier or some other device. For instance
when the CXA1610M is used as an RF amplifier, the VC input pin of the CXA1753M should be connected to
the VR output pin of the CXA1610M.
In addition, note that Pin 3 is internally connected to Pin 7 (GND).
Power supply connections for each case are as follows.
(9) VCC
Dual power supply
Single power supply
Positive power
supply
Positive power
supply
(7) GND
Negative power
supply
GND
(8) VC
GND
Center voltage
(3) NC
Negative power
supply or open
GND or open
For both a dual power supply and a single power supply, the voltage difference between the VCC and GND
pins should be within the range of 2.8 V and 11.0 V.
—6—
CXA1753M
Package Outline
Unit : mm
PD-S-14
1.5 ± 0.1
+ 0.4
5.0 – 0.1
0.9 ± 0.1
+ 0.1
0.15 – 0.05
φ2.5 Mirror
6
1
10
°
9.4 ± 0.3
+ 0.3
4.0 – 0.1
15°
10
Datum plane
5
0.3 MIN
0.3 ± 0.1
0.16 M
0.8
10°
NOTE: Dimension “∗” does not include mold protrusion.
5°
SONY CODE
PD-S-14
EIAJ CODE
JEDEC CODE
PACKAGE WEIGHT
—7—
This data sheet has been made from recycled paper to help protect the environment.
0.06g