TDA7294
THERMAL DATA
Symbol
R
th j-case
Description
Thermal Resistance Junction-case
Max
Value
1.5
Unit
°C/W
ELECTRICAL CHARACTERISTICS
(Refer to the Test Circuit V
S
=
±35V,
R
L
= 8Ω, G
V
= 30dB;
R
g
= 50
Ω;
T
amb
= 25°C, f = 1 kHz; unless otherwise specified.
Symbol
V
S
I
q
I
b
V
OS
I
OS
P
O
Parameter
Supply Range
Quiescent Current
Input Bias Current
Input Offset Voltage
Input Offset Current
RMS Continuous Output Power
d = 0.5%:
V
S
=
±
35V, R
L
= 8Ω
V
S
=
±
31V, R
L
= 6Ω
V
S
=
±
27V, R
L
= 4Ω
d = 10%
R
L
= 8Ω ; V
S
=
±38V
R
L
= 6Ω ; V
S
=
±33V
R
L
= 4Ω ; V
S
=
±29V
(***)
P
O
= 5W; f = 1kHz
P
O
= 0.1 to 50W; f = 20Hz to 20kHz
V
S
=
±27V,
R
L
= 4Ω:
P
O
= 5W; f = 1kHz
P
O
= 0.1 to 50W; f = 20Hz to 20kHz
SR
G
V
G
V
e
N
f
L
, f
H
R
i
SVR
T
S
V
ST on
V
ST off
ATT
st-by
I
q st-by
V
Mon
V
Moff
ATT
mute
Slew Rate
Open Loop Voltage Gain
Closed Loop Voltage Gain
Total Input Noise
Frequency Response (-3dB)
Input Resistance
Supply Voltage Rejection
Thermal Shutdown
f = 100Hz; V
ripple
= 0.5Vrms
A = curve
f = 20Hz to 20kHz
P
O
= 1W
100
60
75
145
24
7
60
60
60
70
70
70
100
100
100
0.005
0.1
0.01
0.1
10
80
30
1
2
40
5
Test Condition
Min.
±10
20
30
Typ.
Max.
±40
60
500
+10
+100
Unit
V
mA
nA
mV
nA
W
W
W
W
W
W
%
%
%
%
V/µs
dB
dB
µV
µV
kΩ
dB
°C
1.5
3.5
70
90
1
3
1.5
3.5
60
80
V
V
dB
mA
V
V
dB
Music Power (RMS)
IEC268.3 RULES -
∆t
= 1s (*)
d
Total Harmonic Distortion (**)
20Hz to 20kHz
STAND-BY FUNCTION (Ref: -V
S
or GND)
Stand-by on Threshold
Stand-by off Threshold
Stand-by Attenuation
Quiescent Current @ Stand-by
Mute on Threshold
Mute off Threshold
Mute AttenuatIon
MUTE FUNCTION (Ref: -V
S
or GND)
Note (*):
MUSIC POWER CONCEPT
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.
Note (**):
Tested with optimized Application Board (see fig. 2)
Note (***):
Limited by the max. allowable current.
3/16
STMICROELECTRONICS [ STMICROELECTRONICS ]
