cxa1915an

Manufacturer Part Numbercxa1915an
DescriptionI-v Photo Ic For Minidisc
ManufacturerSony Electronics
cxa1915an datasheet
 


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I-V Photo IC for MiniDisc
Description
The CXA1915AN is a photo IC developed as a
photo detector for the optical pickup of MiniDisc. The
photodiode for RF signal detection has a built-in I-V
amplifier and features low output impedance for
stable output.
• Focus servo:
astigmatic method
• Tracking servo: three-spot method
• Magneto optical signal (RF signal) detection:
Wollaston prism method
Features
• I-V amplifier (current-voltage conversion circuit)
• Ultra-compact transparent molded package
(SSOP)
Applications
Optical pickup for MiniDisc
Structure
Bipolar silicon monolithic IC
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.
CXA1915AN
16 pin PD-S (Plastic)
Absolute Maximum Ratings (Ta=25°C)
• Supply voltage
V
CC
• Operating temperature
Topr
• Storage temperature
Tstg
• Allowable power dissipation
P
D
Recommended Operating Conditions
• Supply voltage
V
CC
—1—
6
V
–20 to 90
°C
–40 to 90
°C
150
mW
2.5 to 5.5
V
E94X43-TE

cxa1915an Summary of contents

  • Page 1

    ... I-V Photo IC for MiniDisc Description The CXA1915AN is a photo IC developed as a photo detector for the optical pickup of MiniDisc. The photodiode for RF signal detection has a built-in I-V amplifier and features low output impedance for stable output. • Focus servo: astigmatic method • Tracking servo: three-spot method • ...

  • Page 2

    ... Circuit Block Diagram Vcc 160 135 GND GND Fo Co R=115k and J are photodiodes. —2— CXA1915AN E 150 (Unit: µ ...

  • Page 3

    ... In the dark Voff In the dark V P =5µW, = 780nm O O Vomax P =100µW, = 780nm O fc 100kHz reference GND Io GND —3— CXA1915AN (V =3.0V, V =1.5V, Ta=25° Min. Typ. Max. Unit 2.2 3.2 mA 4.0 nA 0.3 0.4 A/W -10 5 100 130 160 2.7 2.8 V 1.8 2.3 ...

  • Page 4

    ... Photo Detector Position Reference side Photo detector center Reference side Accuracy in position of photo detector (the reference side shown above is reference ±0 ±0 ±2° 0.45 1 2.20 Photo detector side Photo detector center —4— CXA1915AN 0.38 Reference side (Unit: mm) ...

  • Page 5

    ... Ta-Ambient temperature (°C) Current consumption vs. Ambient temperature characteristics 5 In the dark state =6.0V, V =3. =3.0V, V =1. =2.5V, V =1.25V – Ta-Ambient temperature (°C) —5— CXA1915AN 100 100 100 ...

  • Page 6

    ... Light 6 Photo 7 current 8 Photodiode 10 —6— CXA1915AN Description For a dual positive/negative power supply: GND For a single power supply: center voltage input Output of electrical signals converted from optical signals V C For a dual positive/negative power supply: negative power supply For a single power supply: ...

  • Page 7

    ... Notes on Operation 1. Connection to RF amplifiers In the CXA1915AN, the RF signals (I, J) are of the voltage-output type. Therefore, the RF amplifier should have an I-V amplifier at the input block because the servo signals ( are of current-output type. 2. Power supply The CXA1915AN can be used either with a dual positive/negative power supply or with a single power supply ...

  • Page 8

    ... Package Outline Unit : mm 3.5 ± 0.1 0.5 0.22 B SONY CODE EIAJ CODE JEDEC CODE PD-S-16 1.8 ± 0.2 0.985 ± 0.1 2 Mirror Datum plane 0 0.1 – 0.05 0.1 0° to 10° DETAIL A NOTE: Dimension “ ” does not include mold protrusion. PD-S-16 PACKAGE WEIGHT —8— CXA1915AN 0.145 0 0.05 0.22 – 0.04 (0.2) DETAIL B 0.04g ...