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LM49352 データシート(PDF) 2 Page - Texas Instruments

部品番号 LM49352
部品情報  Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers Earpiece Driver, and Audio DSP
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM49352 データシート(HTML) 2 Page - Texas Instruments

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background image
EP+/
AUX_OUT+
LS_OUT+
HPL_OUT
HPR_OUT
DACREF
MCLK
A_VDD
D_VDD
SCL
SDA
PORT1_CLK
PORT1_WS
PORT1_SDI
PORT1_SDO
PORT2_CLK
PORT2_WS
PORT2_SDI
MONO_IN-
MONO_IN+
POWER MANAGEMENT
and CONTROL
CLOCK
NETWORK
with
6' PLL
REGISTERS
I
2
C
SLAVE
BG
AB
AB
-46.5 dB to 18 dB
6 dB to 36 dB
PORT2_SDO/GPIO
RIGHT
ADC
6'
6'
LEFT
ADC
DAC
EFFECTS
VOL CTRL
5-BAND EQ
ALC
AB
CHARGE
PUMP
CP+
CP-
LS_VDD LSGND
AGND
DGND
I/O_VDD
6'
LEFT
DAC
6'
RIGHT
DAC
HPVSS
MIC+
VCM
EP-/
AUX_OUT-
LS_OUT-
MIC-
VCM
ADC
EFFECTS
VOL CTRL
5-BAND EQ
ALC
AUXR / AUX+
AUXL / AUX-
VCM
HP_VSS
HP_VSS
HP_VDD
HP_VDD
HP_VDD
0 dB to 12 dB
-18 dB
to
0 dB
D
-18 dB
to
0 dB
ADCREF
0 dB to 6 dB
LM49352
SNAS467D – MARCH 2009 – REVISED JUNE 2010
www.ti.com
DESCRIPTION (CONTINUED)
The LM49352 features dual bi-directional I2S or PCM audio interfaces and an I2C compatible interface for control.
The stereo DAC path features an SNR of 103dB with 24-bit 48 kHz input. The headphone amplifier delivers
65mWRMS (typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when HP_VDD = 2.8V.
The loudspeaker amplifier delivers up to 970mW into an 8
Ω load with less than 1% distortion when LS_VDD =
4.2V.
The LM49352 employs advanced techniques to extend battery life, to reduce controller overhead, to speed
development time, and to eliminate click and pop artifacts. Boomer audio power amplifiers are designed
specifically for mobile devices and require minimal PCB area and external components.
LM49352 Overview
Figure 1. LM49352 Block Diagram
2
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Copyright © 2009–2010, Texas Instruments Incorporated
Product Folder Links: LM49352


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