CXA1797Q
Dolby B-C Type Noise Reduction System with Recording Equalizer Amplifier
Description
The CXA1797Q is an audio signal processing LSI
designed for use in cassette decks.
Functions include Dolby B-C noise reduction,
recording equalizer amplifier, meter circuit
(logarithmic), bias control circuit, and playback
switching circuit. Serial control of these functions is
possible.
Features
•
Few external parts
•
Serial control of each functions possible
•
Dolby B-C noise reduction
•
Dolby S noise reduction select switch
•
Recording equalizer amplifier
•
Recording volume control
•
Playback input select switch
•
Meter circuit (logarithmic wave detection)
•
Bias control circuit (left and right independent)
Applications
Cassette decks
64 pin QFP (Plastic)
Absolute Maximum Ratings
(Ta=25°C)
•
Supply voltage
V
CC
+12
V
(between V
CC
and V
EE
)
•
Operating temperature Topr
–20 to +75
°C
•
Storage temperature
Tstg –65 to +150
°C
•
Allowable power dissipation
P
D
1.02
W
Recommended Operating Conditions
Supply voltage
V
CC
±5.25 to ±6.0
Structure
Bipolar silicon monolithic IC
V
∗This
IC is available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications
information may be obtained.
∗"Dolby"
and the double D symbols are trade marks of Dolby Laboratories Licensing Corporation.
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.
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