Optical disc ICs
Pulse width controller for portable
CD players
BA3890F
The BA3890F is an interface IC that provides gain for the PWM signal pulses used in digital servo systems, and allows
gain adjustment to eliminate the dependence on battery voltage.
FApplications
Portable CD players CD-ROM, and MD players
FFeatures
1) Amplifies the pulse width in accordance with the bat-
tery voltage.
2) Gain switching is possible via the control pin.
FAbsolute
maximum ratings (Ta = 25_C)
FRecommended
operating conditions
649
Appendix
Notes
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The contents described herein are subject to change without notice. The specifications for the
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that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
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ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
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About Export Control Order in Japan
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In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
Electronics Design Contest
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