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LM4732 Datasheet(Fiches technique) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM4732
Description  Stereo 50W Audio Power Amplifier with Mute
Télécharger  22 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
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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-|
80V
Common Mode Input Voltage
(V
+ or V-) and
|V
+|+|V-|
≤ 80V
Differential Input Voltage (Note 12)
60V
Output Current
Internally Limited
Power Dissipation (Note 3)
125W
ESD Susceptability (Note 4)
3.0kV
ESD Susceptability (Note 5)
200V
Junction Temperature (T
JMAX) (Note 9)
150˚C
Soldering Information
TA Package (10 seconds)
260˚C
Storage Temperature
-40˚C to +150˚C
Thermal Resistance
θ
JA
30˚C/W
θ
JC
0.8˚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
≤ 80V
Electrical Characteristics (Notes 1, 2)
The following specifications apply for V
+ = +29V, V- = −29V, I
MUTE = -1mA/Channel and RL =8
Ω unless otherwise specified.
Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4732
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
|V
+|+|V-|
Power Supply Voltage (Note
10)
V
PIN7 −V
-
≥ 9V
18
20
80
V (min)
V (max)
A
M
Mute Attenuation
I
MUTE = 0mA
110
dB
P
O
Output Power (RMS)
THD+N =10% (max), f = 1kHz
|V
+|=|V-| = 22V, R
L =4
|V
+|=|V-| = 29V, R
L =8
50
50
45
45
W (min)
W (min)
THD+N =1% (max), f = 1kHz
|V
+|=|V-| = 22V, R
L =4
|V
+|=|V-| = 29V, R
L =8
42
42
W
W
THD+N
Total Harmonic Distortion +
Noise
P
O = 1W, f = 1kHz
A
V = 26dB
|V
+|=|V-| = 22V, R
L =4
|V
+|=|V-| = 29V, R
L =8
0.02
0.01
%
%
X
talk
Channel Separation (Note 11)
P
O = 10W, f = 1kHz
70
dB
P
O = 10W, f = 10kHz
72
dB
SR
Slew Rate
V
IN = 2.0VP-P,tRISE = 2ns
19
V/µs
I
DD
Total Quiescent Power
V
CM = 0V,
105
170
mA (max)
Supply Current
V
O = 0V, IO =0A
V
OS
Input Offset Voltage
V
CM = 0V, IO = 0mA
1
10
mV (max)
I
B
Input Bias Current
V
CM = 0V, IO = 0mA
0.2
µA
PSRR
Power Supply Rejection Ratio
V
EE =-29V+VRIPPLE =1VRMS
f
RIPPLE = 120Hz sine wave, VCC = 29VDC
62
dB
V
CC =29V+VRIPPLE =1VRMS
f
RIPPLE = 120Hz sine wave, VEE =
-29V
DC
89
dB
A
VOL
Open Loop Voltage Gain
R
L =2k
Ω, ∆V
O = 40V
115
dB
e
IN
Input Noise
IHF-A-Weighting Filter,
R
IN = 600
Ω (Input Referred)
2.0
µV
Note 1: All voltages are measured with respect to the ground pins, unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given; however, the typical value is a good indication of device performance.
www.national.com
3




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