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LM4941 Datasheet(Fiches technique) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Numéro de pièce LM4941
Description  1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown
Télécharger  13 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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 3 page
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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)
200V
Junction Temperature
150˚C
Thermal Resistance
θ
JA (TM)
100˚C/W
Soldering Information
See AN-1187
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ 85˚C
Supply Voltage
2.4V
≤ V
DD
≤ 5.5V
Electrical Characteristics V
DD =5V (Notes 1, 2)
The following specifications apply for V
DD = 5V, AV = 1, and 8
Ω load unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4941
Units
(Limits)
Typical
Limit
(Note 6)
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN = 0V, no load
V
IN = 0V, RL =8
1.7
1.7
2.5
mA (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.1
1
µA (max)
P
o
Output Power
THD = 1% (max);f=1kHz
R
L =8
1.25
1.1
W (min)
THD = 10% (max);f=1kHz
R
L =8
1.54
W
THD+N
Total Harmonic Distortion + Noise
P
o = .7 Wrms; f = 1kHz
.04
%
PSRR
Power Supply Rejection Ratio
V
ripple = 200mV sine p-p
f = 217Hz (Note 8)
95
70
dB (min)
f = 1kHz (Note 8)
90
CMRR
Common-Mode Rejection Ratio
f = 217Hz, V
CM = 200mVpp
70
dB
f = 20Hz–20kHz , V
CM = 200mVpp
70
dB
V
OS
Output Offset
V
IN =0V
2
mV
V
SDIH
Shutdown Voltage Input High
1.4
V (min)
V
SDIL
Shutdown Voltage Input Low
0.4
V (max)
SNR
Signal-to-Noise Ratio
P
O = 1W, f = 1kHz
108
dB
T
WU
Wake-up Time from Shutdown
Cbypass = 1µF
12
ms
Electrical Characteristics V
DD =3V
(Notes 1, 2)
The following specifications apply for V
DD = 3V, AV = 1, and 8
Ω load unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4941
Units
(Limits)
Typical
Limit
(Note 6)
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN = 0V, no load
V
IN = 0V, RL =8
1.6
1.6
2.4
mA (max)
I
SD
Shutdown Current
V
SHUTDOWN = GND
0.1
1
µA (max)
P
o
Output Power
THD = 1% (max);f=1kHz
R
L =8
0.43
W
THD = 10% (max);f=1kHz
R
L =8
0.54
W
THD+N
Total Harmonic Distortion + Noise
P
o = 0.25Wrms; f = 1kHz
.05
%
PSRR
Power Supply Rejection Ratio
V
ripple = 200mV sine p-p
f = 217Hz (Note 8)
95
dB
f = 1kHz (Note 8)
90
www.national.com
3




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