參數(shù)資料
型號： LM4931
廠商： National Semiconductor Corporation
英文描述： Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
中文描述： 與單聲道音頻子系統(tǒng)高效揚(yáng)聲器和立體聲耳機(jī)放大器
文件頁數(shù)： 5/47頁
文件大?。?/td> 1640K
代理商： LM4931
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Analog Supply Voltage
Digital Supply Voltage
Storage Temperature
Power Dissipation (Note 3)
ESD Susceptibility
Human Body Model (Note 4)
Machine Model (Note 5)
6.0V
6.0V
-65C to +150C
Internally Limited
2500V
200V
Junction Temperature
Thermal Resistance
θ
JA
- TLA42YVA
150C
105C/W
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
DV
DD
(Note 8)
AV
DD
(Note 8)
40C
≤
T
A
≤
+85C
2.7V - 4.0V
2.7V - 5.0V
Electrical Characteristics DV
DD
= 3V, AV
DD
= 3V, R
LHP
= 32
, R
LHF
= 8
(Notes 1, 2)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4931
Units
(Limits)
Typical
(Note 6)
Limits
(Note 7)
Power
DI
SD
Digital Shutdown Current
Mode 0
f
MLCK
= 12MHz (Note 9)
No MCLK
Mode 1, f
MCLK
= 12MHz
f
MLCK
= 12MHz
Mode 2, 3, 4
Mode 5, 6, 7
Mode 8, 9, 10
f
MCLK
= 12MHz
Mode 0, No load
Mode 1, No load
No Load
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Mode 8, 9, 10
400
1
400
500
2
1200
μA (max)
μA (max)
μA (max)
DI
ST
Digital Standby Current
DI
DD
Digital Power Supply Current
1.3
2.8
3.2
2.8
0.1
100
3.2
7
7.5
3.5
2.5
200
mA (max)
mA (max)
mA (max)
mA (max)
μA (max)
μA (max)
PLLI
DD
AI
SD
AI
ST
PLL Quiescent Current
Analog Shutdown Current
Analog Standby Current
AI
DD
Analog Power Supply Quiescent
Current
7.8
5.3
8.6
8.4
6.0
9.2
10.1
19
10
15
15
15
15
16
mA (max)
mA (max)
mA (max)
mA (max)
mA (max)
mA (max)
mA (max)
Loudspeaker Amplifier
V
FS
Full-Scale Output Voltage
Loudspeaker Amplifier)
Total Harmonic Distortion + Noise
Loudspeaker Amplifier Output
Power
8
load, 0dB gain setting
2.6
V
P-P
THD+N
P
OLS
f
OUT
= 1kHz, P
OUT
= 200mW
THD = 1% (max), f
OUT
= 1kHz
0.4
%
470
350
mW (min)
PSRR
Power Supply Rejection Ratio
(Loudspeaker Amplifier)
C
B
= 1.0μF
V
RIPPLE
= 200mV
P-P
f
RIPPLE
= 217Hz
Signal = V
O
at 0dBFS, f = 1kHz,
Noise = digital zero, A-weighted,
0dB gain setting (Note 10)
f
MCLK
= 12.288MHz, PLL disabled
54
dB
SNR (Voice)
Signal-to-Noise Ratio of Voice
Channel (Loudspeaker Amplifier)
71
dB
L
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