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LM49352 Folha de dados(PDF) 10 Page - Texas Instruments

Nome de Peças LM49352
Descrição Electrónicos  Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers Earpiece Driver, and Audio DSP
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

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LM49352
SNAS467D – MARCH 2009 – REVISED JUNE 2010
www.ti.com
Electrical Characteristics
A_VDD = LS_VDD = 3.3V; HP_VDD = D_VDD = I/O_VDD = 1.8V
(1) (2)
The following specifications apply for RL(LS) = 8Ω, RL(HP) = 32Ω, f = 1kHz, unless otherwise specified. Limits apply for TA =
25°C.
LM49352
Units
Symbol
Parameter
Conditions
Typical
Limit
(Limit)
(3)
(4)
DC CHARACTERISTICS (Digital current combines D_VDD and I/O_VDD. Analog current combines A_VDD, HP_VDD, and LS_VDD)
Shutdown Mode,
DISD
Digital Shutdown Current
2
µA
fMCLK = 13MHz, PLL Off
fMCLK = 11.2896MHz, fS = 44.1kHz,
Digital Active Current (MP3 Mode)
Stereo DAC On, OSRDAC = 64,
1.2
1.4
mA (max)
PLL Off, HP On
fMCLK = 13MHz
Digital Active Current (FM Mode)
0.2
0.5
mA (max)
Analog Audio modes
fMCLK = 12.288MHz, fS = 48kHz,
DIDD
Digital Active Current
Stereo ADC On, OSRADC = 128,
1.3
1.5
mA (max)
(FM Record Mode)
PLL Off, Stereo Analog Inputs On
fMCLK = 12.288MHz, fS = 8kHz,
Digital Active Current
Mono ADC On, Mono DAC On,
0.5
0.8
mA (max)
(CODEC Mode)
OSRDAC = 64
OSRADC = 128, PLL Off, MIC On
AISD
Analog Shutdown Current
Shutdown Mode
0.1
5
μA (max)
fMCLK = 11.2896MHz, fS = 44.1kHz
Stereo DAC On, OSRDAC = 64
PLL Off, Stereo HP On
Analog Supply Current (MP3 Mode)
From A_VDD
4.3
6
mA (max)
From HP_VDD
1.5
2.7
mA (max)
fMCLK = 13MHz, PLL Off
Stereo Auxiliary Inputs On,
PLL Off, Stereo HP On
Analog Supply Current (FM Mode)
From A_VDD
1.7
2.6
mA (max)
AIDD
From HP_VDD
1.5
2.7
mA (max)
fMCLK = 12.288MHz, fS = 48kHz,
Analog Supply Current
Stereo ADC On, OSRADC = 128,
7.2
9.3
mA (max)
(FM Record Mode)
PLL Off, Stereo Analog Inputs On
fMCLK = 12.288MHz, fS = 8kHz,
Mono ADC On, Mono DAC On,
Analog Supply Current
OSRDAC = 64
6.6
8.7
mA (max)
(CODEC Mode)
OSRADC = 128, PLL Off, MIC On,
EP On
fMCLK = 13MHz,
fPLLOUT = 12MHz, PLL On only
PLLIDD
PLL Total Active Current
From A_VDD
1.9
2.7
mA (max)
From D_VDD
1.4
2
mA (max)
HPIDD
Headphone Quiescent Current
Stereo HP On only
1.5
mA
LSIDD
Loudspeaker Quiescent Current
LS On only
2.2
mA
MICIDD
Microphone Quiescent Current
Mono MIC
0.4
mA
(1)
“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified.
(2)
The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not guaranteed.
(3)
Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of
product characterization and are not guaranteed.
(4)
Datasheet min/max specification limits are guaranteed by test or statistical analysis.
10
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