LA7471 查看數據表（PDF） - SANYO -> Panasonic
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LA7471 Datasheet PDF : 10 Pages
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Ordering number : EN4488A
Monolithic Linear IC
LA7471M
Two-Channel Microphone Amplifier
for Video Camera
Overview
The LA7471M is a stereo microphone amplifier for use in
video camera products. It includes an automatic wind
noise detection and removal circuit, an equalization circuit
to compensate for microphone frequency characteristics
and an L/R mixing circuit to provide a good stereo image.
The LA7471M provides high quality audio for video
camera applications.
Functions
• Microphone amplifier (two channels)
• Internal/external microphone switching
• Automatic wind noise detection/prevention circuit
• High-pass filter and disable switch
• Internal microphone power supply
• External microphone power supply (with current
limiter)
• Ripple filter
• Stereo/mono detection for external microphones
Features
• Automatic wind noise detection and exclusion circuit
(The high-pass filter provides a first-order to third-order
linear conversion.)
• High-quality audio (low noise, microphone frequency
characteristic compensation, and stereo enhancement)
Package Dimensions
unit: mm
3162B-QFP36
[LA7471M]
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Ta ≤ 65°C
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Symbol
VCC
VCC op
Conditions
Conditions
SANYO: QFP36
Ratings
Unit
7.0
V
300
mW
–10 to +65
°C
–55 to +150
°C
Ratings
Unit
5.0
V
4.5 to 5.5
V
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098HA (OT)/40596TH/42094TH (OT) B-0326 No. 4488-1/10
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