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LM49370 Folha de dados(PDF) 7 Page - Texas Instruments

Nome de Peças LM49370
Descrição Electrónicos  Audio Power Amplifier Series Audio Sub-System with an Ultra Low EMI, Spread Spectrum, Class D Loudspeaker Amplifier
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM49370 Folha de dados(HTML) 7 Page - Texas Instruments

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LM49370
www.ti.com
SNAS356D – FEBRUARY 2007 – REVISED MARCH 2012
Electrical Characteristics
(1)(2) (continued)
Unless otherwise stated PLL_VDD = 3.3V, D_VDD = 3.3V, BB_VDD = 1.8V, A_VDD = 3.3V, LS_VDD = 3.3V. The following
specifications apply for the circuit shown in Figure 2 unless otherwise stated. Limits apply for 25°C.
LM49370
Symbol
Parameter
Conditions
Units
Limit(4)
Typical(3)
(5)
Chip Mode '10', fMCLK = 12MHz,
fS = 48kHz,
7.9
mA
DAC on; PLL off
Digital Playback Mode Digital
Active Current
Chip Mode '10', fMCLK = 13MHz,
fPLLOUT = 12MHz, fS = 48kHz;
12.5
14.5
mA(max)
DAC + PLL on
Chip Mode '10', HP On, SE mode,
9.0
13.5
mA(max)
DAC inputs selected
Digital Playback Mode Analog
Chip Mode '10', HP On, OCL mode,
9.4
13.5
mA(max)
Active Current
DAC inputs selected
Chip Mode '10', LS On,
11.5
15.5
mA(max)
DAC inputs selected
Analog Playback Mode Digital Active
Chip Mode '10', fMCLK = 13MHz,
0.9
1.8
mA(max)
Current
DAC +ADC + PLL off
Chip Mode '10', HP On, SE mode,
5.9
9.5
mA(max)
AUX inputs selected
Analog Playback Mode Analog Active
Chip Mode '10', HP On, OCL mode,
6.3
9.7
mA(max)
Current
AUX inputs selected
Chip Mode '10', LS On,
8.4
12
mA(max)
AUX inputs selected
Chip Mode '10', fMCLK = 13MHz, fS =
CODEC Mode Digital Active Current
2.7
3.5
mA(max)
8kHz, DAC +ADC on; PLL Off
CODEC Mode Analog Active Current
Chip Mode '10', EP On,
11.2
15.5
mA(max)
DAC inputs selected
Voice Module Mode Digital Active
Chip Mode '10', fMCLK = 13MHz,
0.9
1.8
mA(max)
Current
DAC +ADC + PLL off
Voice Module Mode Analog Active
Chip Mode '10', EP + CPOUT on,
7.4
11
mA(max)
Current
CPIN input selected
LOUDSPEAKER AMPLIFIER
8
Ω load, LS_VDD = 5V
1.2
W
PLS
Max Loudspeaker Power
8
Ω load, LS_VDD = 4.2V
0.9
W
8
Ω load, LS_VDD = 3.3V
0.5
0.43
W (min)
8
Ω load, LS_VDD = 3.3V,
LSTHD+N
Loudspeaker Harmonic Distortion
0.04
%
PO = 400mW
0 dB Input
LSEFF
Efficiency
84
%
MCLK = 12.000 MHz
AUX inputs terminated
Power Supply Rejection Ration
CBYPASS = 1.0 µF
PSRRLS
70
dB
(Loudspeaker)
VRIPPLE = 200 mVP-P
fRIPPLE = 217 Hz
SNRLS
Signal to Noise Ratio
From 0 dB Analog AUX input, A-weighted
90
80
dB(min)
eN
Output Noise(7)
A-weighted
62
µV
VOS
Loudspeaker Offset Voltage
12
mV
(7)
Disabling or bypassing the PLL will usually result in an improvement in noise measurements.
Copyright © 2007–2012, Texas Instruments Incorporated
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