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参数资料
| 型号： | LM4912MM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.145 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | MSOP-10 |
| 文件页数： | 10/16页 |
| 文件大小： | 490K |
| 代理商： | LM4912MM/NOPB |
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
6.0V
Storage Temperature
65°C to +150°C
Input Voltage
-0.3V to V
DD + 0.3V
Power Dissipation (Note 3)
Internally Limited
ESD Susceptibility (Note 4)
2000V
ESD Susceptibility (Note 5)
250V
Junction Temperature
150°C
Thermal Resistance
θ
JC (MSOP)
56°C/W
θ
JA (MSOP)
190°C/W
Operating Ratings
Temperature Range
T
MIN ≤ TA ≤ TMAX
40°C
≤ T
A ≤ 85°C
Supply Voltage (V
DD)
2.0V
≤ V
DD ≤ 5.5V
Electrical Characteristics V
The following specifications apply for V
DD = 5.0V, RL = 16, CO = 100, and CB = 4.7F unless otherwise specified. Limits apply
to T
A = 25°C.
Symbol
Parameter
Conditions
LM4912
Units
(Limits)
Typ
(Note 6)
Limit
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A
2
5
mA (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.1
2.0
A (max)
I
M
Mute Current
V
MUTE = VDD
2
5
mA (max)
V
SDIH
Shutdown Voltage Input High
1.8
V
SDIL
Shutdown Voltage Input Low
0.4
V
MIH
Mute Voltage Input High
1.8
V
MIL
Mute Voltage Input Low
0.4
V
P
O
Output Power
THD = 1%; f = 1kHz
mW
R = 16
145
R = 32
80
V
NO
Output Noise Voltage
BW = 20 Hz to 20kHz, A-weighted
10
V
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mV sine p-p
65
dB
A
M
Mute Attenuation
f = 1kHz
85
dB
Electrical Characteristics V
The following specifications apply for V
DD = 3.0V, RL = 16, CO = 100F, and CB = 4.7F unless otherwise specified. Limits apply
to T
A = 25°C.
Symbol
Parameter
Conditions
LM4912
Units
(Limits)
Typ
(Note 6)
Limit
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN = 0V, IO = 0A
1.5
3
mA (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.1
2.0
A (max)
I
M
Mute Current
V
MUTE = VDD
1.5
3
mA (max)
P
O
Output Power
THD = 1%; f = 1kHz
mW
R = 16
40
R = 32
25
V
NO
Output Noise Voltage
BW = 20 Hz to 20kHz, A-weighted
10
V
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mV sine p-p
65
dB
A
M
Mute Attenuation
f = 1kHz
80
dB
3
www.national.com
LM4912
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