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LM4780 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4780
Description  Audio Power Amplifier Series Stereo 60W, Mono 120W Audio Power Amplifier with Mute
PDF  24 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4780 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-|
(No Signal)
94V
Supply Voltage |V
+|+|V-|
(Input Signal)
84V
Common Mode Input Voltage
(V
+ or V-) and
|V
+|+|V-|
≤ 80V
Differential Input Voltage (Note 13)
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
≤ 84V
Note: Operation is guaranteed up to 84V; however, distor-
tion may be introduced from SPiKe protection circuitry if
proper thermal considerations are not taken into account.
Refer to the Thermal Considerations section for more
information.
Electrical Characteristics (Notes 1, 2)
The following specifications apply for V
+ = +35V, V- = −35V, I
MUTE = -1mA and RL =8
Ω unless otherwise specified. Limits ap-
ply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4780
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 8)
|V
+|+|V-|
Power Supply Voltage (Note
10)
GND−V
-
≥ 9V
18
20
84
V (min)
V (max)
A
M
Mute Attenuation
I
MUTE = 0mA
110
80
dB (min)
P
O
Output Power (RMS)
THD+N = 0.5% (max)
f = 1kHz; f = 20kHz
|V
+|=|V-| = 25V, R
L =4
Ω
|V
+|=|V-| = 30V, R
L =6
Ω
|V
+|=|V-| = 35V, R
L =8
Ω
55
55
60
50
50
50
W (min)
W (min)
W (min)
THD+N
Total Harmonic Distortion +
Noise
P
O = 30W, f = 20Hz - 20kHz
A
V = 26dB
|V
+|=|V-| = 25V, R
L =4
Ω
|V
+|=|V-| = 30V, R
L =6
Ω
|V
+|=|V-| = 35V, R
L =8
Ω
0.07
0.05
0.03
%
%
%
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
8
V/µs (min)
I
DD
Total Quiescent Power
V
CM = 0V,
110
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
1
µA (max)
I
O
Output Current Limit
|V
+|=|V-| = 20V, t
ON = 10ms
11.5
7
A (min)
V
OD
Output Dropout Voltage
(Note 12)
|V
+ -V
O|, V
+ = 28V, I
O = +100mA
|V
- -V
O|, V
- = -28V, I
O = -100mA
1.6
2.5
2.0
3.0
V (max)
V (max)
PSRR
Power Supply Rejection Ratio
(Note 15)
V
+ = 40V to 20V, V- = -40V,
V
CM = 0V, IO = 0mA
120
85
dB (min)
V
+ = 40V, V- = -40V to -20V,
V
CM = 0V, IO = 0mA
105
85
dB (min)
CMRR
Common Mode Rejection Ratio
(Note 15)
V
+ = 60V to 20V, V- = -20V to -60V,
V
CM = 20V to -20V, IO = 0mA
110
85
dB (min)
www.national.com
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