ST TDA7265 User Manual
®
25 +25W STEREO AMPLIFIER WITH MUTE & ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
25V ABS MAX.)
±
SPLIT SU PP L Y
HIGH OUTPUT POWER
25 + 25W @ THD =10%, R
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW Iq)
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTEC TION
DESCRIPTION
The TDA7265 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for hi gh quality sound application
as Hi-Fi music centers and stereo TV sets.
= 8Ω, VS = +20V
L
TDA7265
Multiwatt11
ORDERING NUMBER: TDA7265
Figure 1:
+5V
Typical Application Circuit in Split Supply
15K 1µF
µP
1µF
1µF
MUTE/
ST-BY
IN (L)
18K15K
GND
IN (R)
D94AU085
5
7
9
11
+
-
-
+
1
1000µF
+V
S
3
6
-V
S
OUT (L)
4
18K
IN- (L)
8
10 IN- (R)
OUT (R)
2
1000µF
18K
4.7Ω
100nF
560Ω
560Ω
100nF
4.7Ω
RL (L)
RL (R)
April 2002
1/11
TDA7265
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
I
O
P
tot
T
op
T
stg
PIN CONNECTION (Top view)
DC Supply Voltage ±25 V
S
Output Peak Current (internally limited) 4.5 A
Power Dissipation T
= 70°C30W
case
Operating Temperature -20 to 85 °C
, TjStorage and Junction Temperature -40 to +150 °C
TAB CONNECTED TO PIN 6
11
10
9
8
7
6
5
4
3
2
1
D95AU316
IN+(1)
IN-(1)
GND
IN-(2)
IN+(2)
-V
S
MUTE
OUTPUT(2)
+V
S
OUTPUT(1)
-V
S
THERMAL DATA
Symbol Description Value Unit
R
th j-case
Fig 2:
Thermal Resistance Junction-case Max 2 °C/W
Typical Application Circuit in Single Supply
+V
D1 5.1V
S
2/11
R1
10KC11µF
0
MUTE
PLAY
5V
C2
100µF
Q1
BSX33
R2
15K
R3
15K
C3 1µF
C4 1µF
MUTE
IN (L)
IN (R)
C5
OUT (L)
IN- (L)
IN- (R)
OUT (R)
1000µF
R4
30K
R5
1K
R6
30K
R7
1K
5
7
9
11
3
+
-
+
-
1
4
8
2
10
6
GND
C6
0.1µF
C9 470µF
R8
4.7Ω
C7
0.1µF
C10 470µF
R9
4.7Ω
C8
0.1µF
D96AU444A
OUT
(L)
OUT
(R)
TDA7265
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = + 20V; RL = 8Ω; RS = 50Ω;
= 30dB; f = 1KHz; T
G
V
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
q
V
OS
I
b
P
O
P
O
Supply Range +5 +25 V
Total Quiescent Current 80 130 mA
Input Offset Voltage –20 +20 mV
Non Inverting Input Bias Current 500 nA
Music Output Power (*) THD = 10%; RL = 8Ω ;
Output Power THD = 10%
THD Total Harmonic Distortion R
C
T
Cross Talk f = 1KHz
SR Slew Rate 10 V/µs
G
OL
e
N
R
i
Open Loop Voltage Gain 80 dB
Total Input Noise A Curve
Input Resistance 15 20 KΩ
SVR Supply Voltage Rejection
(each channel)
T
j
Thermal Shut-down
Junction Temperature
MUTE FUNCTION [ref: +V
VT
MUTE
A
M
Mute / Play Threshold -7 -6 -5 V
Mute Attenuation 60 70 dB
STAND-BY FUNCTION [ref: +V
VT
ST-BY
A
ST-BY
I
q ST-BY
Note :
(*) FULL POWER up to. V
MUSIC POW ER
1 sec after the application of a sinusoidal input signal of frequency 1KHz.
Stand-by / Mute Threshold -3.5 -2.5 -1.5 V
Stand-by Attenuation 110 dB
Quiescent Current @ Stand-by 3 mA
is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity)
= 25°C, unless otherwise specified.)
amb
V
= + 22.5V
S
R
= 8Ω ;
L
V
+ 16V; RL = 4Ω
S
THD = 1%
R
= 8Ω ;
L
V
+ 16V; RL = 4Ω
S
= 8Ω ; PO = 1W; f = 1KHz 0.01 %
L
RL = 8Ω ;
P
= 0.1 to 15W;
O
f = 100Hz to 15KHz
= 4Ω ; PO = 1W; f = 1KHz 0.02 %
R
L
= 4Ω ; VS + 16V;
R
L
P
= 0.1 to 12W;
O
f = 100Hz to 15KHz
f = 10KHz
f = 20Hz to 22KHz
fr = 100Hz Vr = 0.5V 60 dB
]
S
]
S
= ±22.5V with RL = 8Ω and VS = ±16V with RL = 4Ω
S
32 W
20 25
25
20
20
0.7 %
1%
70
60
3
48
145 °C
W
W
W
W
dB
dB
µV
µV
3/11
TDA7265
Figure 3: Quiescent Current vs. Supply Voltage
Figure 5: Output Power vs. Supply Voltage
Figure 4: Frequency Response
Figure 6: T.H.D. vs. Output Power
Figure 7: Output Power vs. Supply Voltage Figure 8: T.H.D. vs. Output Power
4/11
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