TDA7497 ST Microelectronics, TDA7497 Datasheet - Page 3

• Manufacturer Part Number: TDA7497
• Description: 10 + 10W STEREO AMPLIFIER WITH MUTE/ST-BY
• Manufacturer: ST Microelectronics

ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V
f = 1KHz; T
Note :
MUSIC POWER is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity)
1 sec after the application of a sinusoidal input signal of frequency 1KHz.
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
(*) FULL POWER up to. V
COMPONENTS
MUTE FUNCTION [ref: +V
STAND-BY FUNCTION [ref: +V
Symbol
VT
VT
I
A
q ST-BY
SVR
SR
ST-BY
P
G
A
V
C
e
R5, R6
C1, C2
C4, C6
C5, C7
C8, C9
R
T
ST-BY
I
G
MUTE
d
q
O
N
M
S
T
V
j
Dz
i
R1
R2
R3
R4
C3
V
amb
Supply Range
Total Quiescent Current
Output Power
Total Harmonic Distortion
Cross Talk
Slew Rate
Closed Loop Voltage Gain
Voltage Gain Matching
Total Input Noise
Input Resistance
Supply Voltage Rejection
(each channel)
Thermal Shut-down
Junction Temperature
Mute / Play Threshold
Mute Attenuation
Stand-by / Mute Threshold
Stand-by Attenuation
Quiescent Current @ Stand-by
= 25 C, unless otherwise specified.)
RECOMMENDED
S
VALUE
1000 F
= 22.5V with R
Parameter
10K
15K
18K
15K
0.1 F
0.1 F
4.7
5.1V
1 F
1 F
S
]
S
]
L
= 8 and V
Mute Circuit
Mute Circuit
Mute Circuit
Mute Circuit
Frequency Stability
Input DC
Decoupling
St-By/Mute Time
Constant
Supply Voltage
Bypass
Supply Voltage
Bypass
Frequency Stability
Mute Circuit
PURPOSE
S
d = 10%
d = 1%
P
P
f = 1KHz
f = 10KHz
A Curve
f = 20Hz to 22KHz
fr = 100Hz; Vripple = 0.5V
= 16V with R
O
O
= 1W
= 0.1 to 5W f = 0.1 to 15KHz
Test Condition
nents are those shown on the demo board sche-
matic. Different values can be used: the following
table can help the designer.
RECOMMENDED VALUE
Increase of Dz
Biasing Current
V
V
V
Danger of Oscillations
Larger On/Off Time
L
pin
pin
pin
= 4
# 4 Shifted Downward
# 4 Shifted Upward
# 4 Shifted Upward
LARGER THAN
S
+ 14V; R
RMS
L
Min.
-3.5
+5
29
15
60
-7
= 8 ; R
RECOMMENDED VALUE
V
V
V
Danger of Oscillations
Higher Low Frequency
Cutoff
Smaller On/Off Time
Danger of Oscillations
Danger of Oscillations
pin
pin
pin
Typ.
0.02
-2.5
145
110
7.5
0.2
2.5
3.5
s
80
10
70
60
10
30
20
60
90
-6
3
SMALLER THAN
# 4 Shifted Upward
# 4 Shifted Downward
# 4 Shifted Downward
= 50 ;
Max.
+20
-1.5
0.5
31
-5
8
TDA7497
Unit
V/ s
mA
mA
K
dB
dB
dB
dB
dB
dB
dB
W
W
%
%
V
V
V
C
V
V
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