lm49370rl National Semiconductor Corporation, lm49370rl Datasheet - Page 9

• Manufacturer Part Number: lm49370rl
• Description: Audio Sub-system With An Ultra Low Emi, Spread Spectrum, Class D Loudspeaker Amplifier, A Dual-mode Stereo Headphone Amplifier, And A Dedicated Pcm Interface For Bluetooth Transceivers
• Manufacturer: National Semiconductor Corporation

LOUDSPEAKER AMPLIFIER
P
LS
LS
PSRR
SNR
e
V
HEADPHONE AMPLIFIER
P
PSRR
SNR
HP
e
ΔA
X
V
EARPIECE AMPLIFIER
N
N
LS
OS
HP
TALK
OS
THD+N
EFF
THD+N
CH-CH
Symbol
LS
HP
LS
HP
Max Loudspeaker Power
Loudspeaker Harmonic Distortion
Efficiency
Power Supply Rejection Ration
(Loudspeaker)
Signal to Noise Ratio
Output Noise
Loudspeaker Offset Voltage
Headphone Power
Power Supply Rejection Ratio
(Headphones)
Signal to Noise Ratio
Headphone Harmonic Distortion
Output Noise
Stereo Channel-to-Channel Gain
Mismatch
Stereo Crosstalk
Offset Voltage
Parameter
8Ω load, LS_V
8Ω load, LS_V
8Ω load, LS_V
8Ω load, LS_V
P
0 dB Input
MCLK = 12.000 MHz
AUX inputs terminated
C
V
f
From 0 dB Analog AUX input, A-weighted
A-weighted
32Ω load, 3.3V, SE
16Ω load, 3.3V, SE
32Ω load, 3.3V, OCL, VCM = 1.5V
32Ω load, 3.3V, OCL, VCM = 1.2V
16Ω load, 3.3V, OCL, VCM = 1.5V
16Ω load, 3.3V, OCL, VCM = 1.2V
AUX inputs terminated
C
V
f
SE Mode
OCL Mode
VCM = 1.2V
OCL Mode
VCM = 1.5V
From 0dB Analog AUX input
A-weighted
SE Mode
OCL Mode
VCM = 1.2V
OCL Mode
VCM = 1.5V
32Ω load, 3.3V, P
A-weighted
SE Mode
OCL Mode
RIPPLE
RIPPLE
O
RIPPLE
RIPPLE
BYPASS
BYPASS
= 400mW
= 217 Hz
= 217 Hz
= 200 mV
= 200 mV
= 1.0 µF
= 1.0 µF
9
Conditions
DD
DD
DD
DD
= 5V
= 4.2V
= 3.3V
= 3.3V,
P-P
P-P
O
= 7.5mW
(Note 6)
Typical
0.04
0.05
1.2
0.9
0.5
0.3
84
70
90
62
12
33
52
31
20
50
32
60
68
65
98
97
96
12
61
71
8
LM49370
(Notes 7,
Limit
0.43
11)
80
25
55
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W (min)
dB(min)
dB(min)
Units
(min)
mW
mW
mW
mW
mW
mW
mV
mV
dB
µV
dB
dB
dB
dB
dB
µV
dB
dB
dB
W
W
%
%
%