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LM4734 Datasheet(Fiches technique) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numéro de pièce LM4734
Description  3 Channel 20W Audio Power Amplifier with Mute and Standby
Télécharger  24 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-|
60V
Common Mode Input Voltage
(V
+ or V-) and
|V
+|+|V-|
≤ 54V
Differential Input Voltage (Note 12)
54V
Output Current
Internally Limited
Power Dissipation (Note 3)
125W
ESD Susceptability (Note 4)
2.0kV
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
1.0˚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
≤ 60V
Electrical Characteristics (Notes 1, 2)
The following specifications apply for V
+ = +21V, V- = −21V, and R
L =8
Ω unless otherwise specified. Limits apply for T
A =
25˚C.
Symbol
Parameter
Conditions
LM4734
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
|V
+|+|V-|
Power Supply Voltage (Note
10)
GND−V
-
≥ 9.5V
18
20
60
V (min)
V (max)
A
M
Mute Attenuation
V
MUTE = 2.5V
110
dB
P
O
Output Power (RMS)
THD+N = 10% (max), f = 1kHz
|V
+|=|V-| = 17V, R
L =4
|V
+|=|V-| = 21V, R
L =8
20
20
15
15
W (min)
W (min)
THD+N = 1% (max), f = 1kHz
|V
+|=|V-| = 17V, R
L =4
|V
+|=|V-| = 21V, R
L =8
17
18
W
W
THD+N
Total Harmonic Distortion +
Noise
P
O = 1W, f = 1kHz
A
V = 26dB
|V
+|=|V-| = 17V, R
L =4
|V
+|=|V-| = 21V, R
L =8
0.05
0.03
%
%
X
talk
Channel Separation (Note 11)
P
O = 10W, f = 1kHz
65
dB
P
O = 10W, f = 10kHz
55
dB
SR
Slew Rate
V
IN = 1.414VRMS,trise = 2ns
18
V/µs
I
DD
Total Quiescent Power Supply
Current
V
CM = 0V, VO = 0V, IO =0A
V
STANDBY = GND, Standby = Off
V
STANDBY = 5V, Standby = On
75
8
120
10
mA (max)
mA (max)
V
OS
Input Offset Voltage
V
CM = 0V, IO = 0mA
2.0
15
mV (max)
I
B
Input Bias Current
V
CM = 0V, IO = 0mA
0.2
µA
PSRR
Power Supply Rejection Ratio
V
+ =21V+V
RIPPLE (1VRMS),
f
RIPPLE = 120Hz Sine, V
- = –21V
DC
75
dB
V
- = –21V+V
RIPPLE (1VRMS),
f
RIPPLE = 120Hz Sine, V
+ = 21V
DC
64
dB
A
VOL
Open Loop Voltage Gain
|V
+|=|V-| = 21V, R
L =2k
∆V
O = 15V
110
dB
e
IN
Input Noise
IHF-A-Weighting Filter,
R
IN = 600
Ω (Input Referred)
2.0
µV
www.national.com
3




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