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LM4941 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4941
Description  1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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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
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