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AN12945A Datasheet

Download or read online Panasonic Corporation AN12945A Monophonic Audio Power IC With Built-in AGC pdf datasheet.
Also see for AN12945A: Datasheet #1 (17 pages)



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Ideal for mobile equipment
Monaural Audio Power IC with Built-in AGC
AN12945A
Overview
The AN12945A is a monaural BTL amplifier incorporating
an automatic gain control (AGC) function that prevents
speaker clipping. The AGC On level can be set to a desired
threshold through external resistor value adjustment.
Signal circuits except for the output stage may be driven at
3V. The small 4mm × 4mm package helps reduce equipment
size and weight.
Feature
• 2W monaural BTL amplifier
(Vcc = 3.3V, VccSP = 5V, RL = 4Ω, THD = 10%)
• AGC circuitry prevents output clipping
• Standby function
• Speaker power save function
• AGC On/Off function
• AGC On level control function
• Small package: ULGA020-L-0404
Applications
Mobile equipment such as cellular phones and PDAs
Products and specifications are subject to change without notice.
Please ask for the latest Product Standards to guarantee the satisfaction
of your product requirements.
New publication, effective from 31 Jan. 2005
M00678AE
,
1 Kotari-yakemachi, Nagaokakyo, Kyoto 617-8520, Japan
Tel. +81-75-951-8151
http://panasonic.co.jp/semicon
Unit : mm
ULGA020-L-0404

Summary of Contents

Page 1

... Ideal for mobile equipment Monaural Audio Power IC with Built-in AGC AN12945A Overview The AN12945A is a monaural BTL amplifier incorporating an automatic gain control (AGC) function that prevents speaker clipping. The AGC On level can be set to a desired threshold through external resistor value adjustment. ...

Page 2

Block Diagram 1µF 16 VREF 3dB Audio Input 33kΩ 17 0.47µF 47kΩ 22dBV 28dBV 18 3dB for LPF 19 GND 9dB 20 16dBV 0.47µF Note) This circuit and these circuit constants show an example and do not guarantee ...

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Absolute maximum Ratings Parameter Supply voltage Supply current Power dissipation Storage temperature Operating ambient temperature Note1) The values the condition not exceeding the above absolute maximum ratings and the power dissipation. Note2) The power dissipation shown is the value at ...

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Electrical Characteristics (unless otherwise specified, ambient temperature is 25°C± 2°C, Parameter Circuit current Circuit current 1A at non-signal Circuit current 2A at non-signal Circuit current 1B at non-signal SP power save On Circuit current 2B at non-signal SP power save ...

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Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or ...

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