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LM4731 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM4731
Description  Stereo 25W Audio Power Amplifier with Mute and Standby Modes
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4731 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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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.
Supply Voltage |V
+|+|V-|
56V
Common Mode Input Voltage
V
+ or V-
Differential Input Voltage
56V
Output Current
Internally Limited
Power Dissipation (Note 3)
50W
ESD Susceptability (Note 4)
2.0kV
ESD Susceptability (Note 6)
250V
Junction Temperature (T
JMAX) (Note 9)
150˚C
Soldering Information
T Package (10 sec.)
260˚C
Storage Temperature
−40˚C to +150˚C
Thermal Resistance
θ
JA (TA)
43˚C/W
θ
JC (TA)
1.5˚C/W
Operating Ratings (Notes 1, 2)
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−20˚C
≤ T
A
≤ +85˚C
Supply Voltage |V
+|+|V-|
20V
≤ V
TOTAL
≤ 56V
Electrical Characteristics (Notes 1, 2)
The following specifications apply for V
+ = +22V, V- = −22V and R
L =8
Ω unless otherwise specified. Limits apply for T
A =
25˚C.
Symbol
Parameter
Conditions
LM4731
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
|V
+|+|V-|
Power Supply Voltage (Note 10)
GND − V
-
≥ 9V
20
56
V (min)
V (max)
A
M
Mute Attenuation
85
dB
P
O
Output Power (RMS)
THD+N = 10% (max), f = 1kHz
|V
+|=|V-| = 18V, R
L =4
|V
+|=|V-| = 22V, R
L =8
25
25
20
22
W (min)
W (min)
THD+N = 1% (max), f = 1kHz
|V
+|=|V-| =18V, R
L =4
|V
+|=|V-| = 22V, R
L =8
20
20
18
18
W (min)
W (min)
THD+N
Total Harmonic Distortion +
Noise
P
O = 1W, f = 1kHz
A
V = 26dB,
|V
+|=|V-| = 18V, R
L =4
|V
+|=|V-| = 22V, R
L =8
0.03
0.02
0.5
0.3
% (max)
% (max)
X
talk
Channel Separation
P
O = 10W
f = 1kHz
f = 10kHz
65
60
dB
dB
SR
Slew Rate (Note 11)
V
IN = 2.0Vp-p,trise = 2ns
18
V/µs
I
DD
Total Quiescent Power Supply
Current
V
CM = 0V, VO = 0V, IO =0A
Standby off (Play Mode)
Standby on (Standby Mode)
95
4.8
110
6
mA (max)
mA (max)
V
OS
Input Offset Voltage
V
CM = 0V, IO = 0 mA
2.0
15
mV (max)
I
B
Input Bias Current
V
CM = 0V, IO = 0 mA
0.2
µA
PSRR
Power Supply Rejection Ratio
V
RIPPLE =1VRMS,fRIPPLE = 120Hz sine
wave
Inputs terminated to GND
50
dB
A
VOL
Open Loop Voltage Gain
R
L =2 k
Ω, ∆ V
O = 20V
110
dB
e
IN
Input Noise
IHF — A-Weighting Filter
2.0
8
µV (max)
R
IN = 600
Ω (Input Referred)
Standby
V
IL
Standby Low Input Voltage
Not in Standby Mode (Play)
0.8
V (max)
V
IH
Standby High Input Voltage
In Standby Mode
2.0
2.5
V (min)
Mute
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