參數(shù)資料
型號(hào)： LM4753T
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 音頻／視頻放大
英文描述： 11.8 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM15
封裝： TO-220, 15 PIN
文件頁(yè)數(shù)： 10/16頁(yè)
文件大小： 511K
代理商： LM4753T
Absolute Maximum Ratings (Notes 3, 4)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
32V
Output Current
Internally Limited
Power Dissipation (Note 5)
22W
ESD Susceptibility (Note 6)
2000V
ESD Susceptibility (Note 7)
250V
Junction Temperature
150C
Soldering Information
T Package (10 sec)
260C
Storage Temperature
40C to +150C
Input Signal Voltage Range
±3V
Operating Ratings (Notes 3, 4)
Temperature Range
T
MIN ≤ TA ≤ TMAX
40C
≤ T
A ≤ +85C
Supply Voltage
15V to 28V
θ
JA (Junction to Ambient)
35C/W
θ
JC (Junction to Case)
1.5C/W
Electrical Characteristics (Notes 3, 4)
The following specifications apply for V
CC = +22V, and Volume @ 0 dB unless otherwise specified. Limits apply for TA = 25C.
Symbol
Parameter
Conditions
LM4753
Units
(Limits)
Typical
(Note 8)
Limit
(Note 9)
I
CQ
(Note 1)
Total Quiescent Power Supply
Current
V
CM = 0V, Vo = 0V, Io = 0 mA
20
mA (min)
80
140
mA (max)
I
STBY
(Note 1)
Standby Current
V
STDBY = 5V, Standby-on
7
10
mA (max)
I
MUTE
Mute Current
V
MUTE = 5V Mute-on
13
20
mA
A
M
(Note 2)
Mute Attenuation
V
MUTE = 5V, VSTDBY = 0V. Mute-on
Signal Input
75
60
dB (min)
V
MUTE = 0V. VSTDBY = 0V. Mute-off
2 Vrms
±5dB
Volume Attenuation Range
80
70
dB (min)
Volume Absolute Attenuation
Line-out
Pin 3 @ 0V = 80 dB, 2V = 14 dB,
3V = 8 dB, 4V = 3 dB, 5V = 0dB
±3
±5
dB (max)
Line-out Offset Voltage
20
40
mV (max)
P
O
(Note 1)
Output Power (Continuous Average)
THD+N = 10% (max)
f = 1 kHz, R
L =8,VCC = 28
11.8
W
f = 1 kHz, R
L =8,VCC = 22V
7
6.5
W(min)
THD+N
(Note 2)
Total Harmonic Distortion Plus Noise
P
o =1W,f=1 kHz, RL =8
0.4
1
% (max)
Xtalk
(Note 2)
Channel Separation
f = 1 kHz, P
o = 5W, RL =8
50
dB
Power Amp Closed-Loop Gain Error
Internal Gain = 30 dB
0.5
±1
dB (max)
SR
(Note 2)
Slew Rate
V
IN = 100 mVp-p, tRISE = 2 ns, RL =8
3
V/s
R
IN
(Note 1)
Input Impedance
32
k
I
O
(Note 1)
Output Current Limit
V
IN = 100 mV DC, tON = 1 ms, RL =1
2.5
2.0
A(min)
PSRR
(Note 2)
Power Supply Rejection Ratio
Vpin 13 AC = 1 Vrms, f = 100 Hz
50
dB
V
CM = 0V, Io =0mA
GBWP
Gain-Bandwidth Product
f
o = 100 kHz, VIN = 50 mvrms
2
MHz
Power Bandwidth
3 dB Bandwidth at 5W
90
kHz
eVCA
out
VCA Output Noise
IHF - A Weighting Filter
R
IN =25
55
V
e
out
Power Amp Output Noise
IHF - A Weighting Filter
R
IN =25
1.8
mV
SNR
Signal-to-Noise Ratio
Measured at 1 kHz, R
s =25
P
o = 4.8W, A - Weighted,
70
dB
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