SGS Thomson Microelectronics TDA7261 Datasheet
25W MONO AMPLIFIER WITHMUTE/ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
50V ABSMAX.)
SPLIT SUPPLY
HIGHOUTPUT POWER:
25W @ THD =10%,R
NO POPAT TURN-ON/OFF
MUTE(POP FREE)
STAND-BY FEATURE (LOWI
FEWEXTERNAL COMPONENTS
SHORTCIRCUIT PROTECTION
THERMALOVERLOAD PROTECTION
DESCRIPTION
The TDA7261 is class AB Audio power amplifier
assembled in the Multiwatt package, specially de-
Figure 1: Typical Application Circuit
=8Ω,VS= +20V
L
Q)
TDA7261
Multiwatt 8
ORDERING NUMBER: TDA7261
signed for high quality sound application in mono
TV chassis.
+5V
February 1997
µP
15K 1µF
1µF
MUTE/
ST-BY
18K15K
D94AU088
IN
GND
+V
S
OUT
1000µF
4.7Ω
100nF
RL
1/9
+V
S
4
6
-
7
1000µF
2
3+
5
-V
S
TDA7261
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
I
O
P
tot
T
stg,Tj
PIN CONNECTION(Topview)
DC Supply Voltage 50 V
S
Output PeakCurrent (internally limited) 4.5 A
Power Dissipation T
Storage and Junction Temperature -40 to +150 °C
=70°C30W
case
8 N.C.
7
6
5
4
3
2
1
GND
IN
-V
S
MUTE/ST-BY
OUTPUT
+V
S
N.C.
Tab connected to pin 5
D94AU090
THERMAL DATA
Symbol Description Value Unit
R
th j-case
Thermal Resistance Junction-case Max 2.5 °C/W
2/9
TDA7261
ELECTRICALCHARACTERISTICS (Referto the test circuit,VS+ 20V; RL=8Ω;Rs=50Ω;
f = 1KHz; T
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
q
P
O
P
O
THD Total Harmonic Distortion R
SR Slew Rate 10 V/µs
G
V
∆G
V
e
N
R
i
SVR Supply Voltage Rejection fr = 100Hz; Vripple = 0.5V
T
j
MUTE FUNCTION [ref: +V
VT
MUTE
A
M
STAND-BY FUNCTION [ref: +V
VT
ST-BY
A
ST-BY
I
q ST-BY
Note :
(*) FULL POWER up to.V
MUSICPOWER is themaximal powerwhich theamplifier is capableof producing across therated load resistance(regardless of non linearity)
1 sec after the application of a sinusoidal input signal of frequency 1KHz.
=25°C, unlessotherwise specified.)
amb
Supply Range +5 +22.5 V
Total Quiescent Current 30 mA
Music Output Power (*) THD = 10%; RL=8Ω ;
V
+ 28.5V;
S
32 W
Output Power THD = 10%
R
=8Ω ;
L
V
+ 16V; RL=4
S
Ω
20 25
25
THD = 1%
R
=8Ω ;
L
V
+ 16V; RL=4
S
=8Ω ;PO= 1W; f= 1KHz 0.02 %
L
=8Ω ;
R
L
P
= 0.1 to 15W;
O
Ω
20
20
0.5 %
f = 100Hz to 15KHz
R
=4Ω;PO= 1W; f =1KHz 0.03 %
L
=4Ω ;VS+ 16V;
R
L
P
= 0.1 to 12W;
O
1%
f = 100Hz to 15KHz
Closed Loop Voltage Gain 29 30 31 dB
Voltage Gain Matching 0.2 dB
Total Input Noise A Curve
f = 20Hz to 22KHz
2.5
3.5 8
Input Resistance 15 20 KΩ
RMS
Thermal Shut-down
60 dB
145
Junction Temperature
S]
Mute / PlayThreshold -7 -6 -5 V
Mute Attenuation 60 90 dB
]
S
Stand-by / Mute Threshold -3.5 -2.5 -1.5 V
Stand-by Attenuation 110 dB
Quiescent Current @ Stand-by 3 mA
=±22.5V with RL=8Ωand VS= ±16V with RL=4Ω
S
W
W
W
W
µV
µV
°
C
3/9
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