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AT73C240
13. Application Diagram
Figure 13-1. Application Using One Li-Ion Battery
PAINN
3.6 V
Battery
(Li-Ion or 3 x NiMh or
NiCd)
100n
22u
C16
VBAT
AT73C240
VDIG
100n
2.8V from LDO
C17
CBP
2.8V from LDO
8 Ohm
Loudspeaker
C7
HPP
HPN
Audio PA
AVDD
AVDDHS
100n
C18
C19
10μF
C15
PAINP
C9
470n
MONOP
REF
VREF
470n
MONON
C11
10u
stereo
R
C12
C8
LINER
VCM
10u
line input
(e.g. FM Radio)
L
470n
C3
LINEL
SPI_DOUT
SPI_DIN/TWD
SPI_CLK/TWCK
SPI / TWI
C6
470n
DIG
MCLK
SPI_CSB/TW_ADD
SMODE
RSTB
Reset active low
32 Ohm
Headset
32
100u
C5
HSR
HSL
Audio
DAC
SDIN
LRFS
BCLK
I2S
or Line Out
32
100u
10u
INGND
C10
GNDA
GNDD
33
6464A–PMAAC–28-Apr-09
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