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LM49370 датащи(PDF) 8 Page - Texas Instruments

номер детали LM49370
подробное описание детали  Audio Power Amplifier Series Audio Sub-System with an Ultra Low EMI, Spread Spectrum, Class D Loudspeaker Amplifier
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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LM49370 датащи(HTML) 8 Page - Texas Instruments

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LM49370
SNAS356D – FEBRUARY 2007 – REVISED MARCH 2012
www.ti.com
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)
HEADPHONE AMPLIFIER
mW
32
Ω load, 3.3V, SE
33
25
(min)
16
Ω load, 3.3V, SE
52
mW
32
Ω load, 3.3V, OCL, VCM = 1.5V
31
mW
PHP
Headphone Power
32
Ω load, 3.3V, OCL, VCM = 1.2V
20
mW
16
Ω load, 3.3V, OCL, VCM = 1.5V
50
mW
16
Ω load, 3.3V, OCL, VCM = 1.2V
32
mW
AUX inputs terminated
CBYPASS = 1.0 µF
VRIPPLE = 200 mVP-P
fRIPPLE = 217 Hz
Power Supply Rejection Ratio
SE Mode
60
dB
PSRRHP
(Headphones)
OCL Mode
68
55
dB(min)
VCM = 1.2V
OCL Mode
65
dB
VCM = 1.5V
From 0dB Analog AUX input
A-weighted
SE Mode
98
dB
SNRHP
Signal to Noise Ratio
OCL Mode
97
dB
VCM = 1.2V
OCL Mode
96
dB
VCM = 1.5V
HPTHD+N
Headphone Harmonic Distortion
32
Ω load, 3.3V, PO = 7.5mW
0.05
%
eN
Output Noise
A-weighted
12
µV
Stereo Channel-to-Channel Gain
ΔACH-CH
0.3
dB
Mismatch
SE Mode
61
dB
XTALK
Stereo Crosstalk
OCL Mode
71
dB
VOS
Offset Voltage
8
mV
EARPIECE AMPLIFIER
mW
32
Ω load, 3.3V
115
100
(min)
PEP
Earpiece Power
16
Ω load, 3.3V
150
mW
CP_IN terminated
CBYPASS = 1.0 µF
PSRREP
Power Supply Rejection Ratio (Earpiece)
76
dB
VRIPPLE = 200 mVP-P
FRIPPLE = 217 Hz
SNREP
Signal to Noise Ratio
From 0dB Analog AUX input, A-weighted
93
dB
EPTHD+N
Earpiece Harmonic Distortion
32
Ω load, 3.3V, PO = 50mW
0.04
%
eN
Output Noise
A-weighted
41
µV
VOS
Offset Voltage
8
mV
AUXOUT AMPLIFIER
THD+N
Total Harmonic Distortion + Noise
VO = 1VRMS, 5kΩ load
0.02
%
CP_IN terminated
CBYPASS = 1.0μF
PSRR
Power Supply Rejection Ratio
86
dB
VRIPPLE = 200mVPP
fRIPPLE = 217Hz
8
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Product Folder Links: LM49370


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