TDA7265.pdf

(157 KB) Pobierz
199643523 UNPDF
[
TDA7265
25 +25W STEREO AMPLIFIER WITH MUTE & ST-BY
WIDE SUPPLY VOLTAGE RANGE (UP TO
± 25V ABS MAX.)
SPLIT SUPPLY
HIGH OUTPUT POWER
25 + 25W @ THD =10%, R L =8 W ,V S = +20V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW I q )
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION
Multiwatt11
ORDERING NUMBER: TDA7265
DESCRIPTION
The TDA7265 is class AB dual Audio power am-
plifier assembled in the Multiwatt package, spe-
cially designed for high quality sound application
as Hi-Fi music centers and stereo TV sets.
Figure 1: Typical Application Circuit
+V S
1000
m
F
15K
1
m
F
MUTE/
ST-BY
5
7
3
IN (L)
+
4
OUT (L)
1 m F
-
18K
IN- (L)
4.7 W
RL (L)
8
100nF
15K
18K
GND
9
560 W
+5V
m P
10
IN- (R)
560
W
18K
1
m
F
-
2
OUT (R)
IN (R)
11
+
4.7 W
1
6
RL (R)
-V S
100nF
D94AU085
1000 m F
July 1998
1/11
199643523.002.png
TDA7265
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V S
DC Supply Voltage
±
25
V
I O
Output Peak Current (internally limited)
4.5
A
P tot
Power Dissipation T case =70
°
C
30
W
T op
Operating Temperature
-20 to 85
°
C
T stg ,T j
Storage and Junction Temperature
-40 to +150
°
C
PIN CONNECTION (Top view)
11
IN+(1)
IN-(1)
GND
IN-(2)
IN+(2)
-V S
MUTE
OUTPUT(2)
+V S
OUTPUT(1)
-V S
10
9
8
7
6
5
4
3
2
1
TAB CONNECTED TO PIN 6
D95AU316
THERMAL DATA
Symbol
Description
Value
Unit
R th j-case
Thermal Resistance Junction-case
Max
2
°
C/W
2/11
199643523.003.png
TDA7265
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V S = + 20V; R L =8 W ;R S =50 W ;
G V = 30dB; f = 1KHz; T amb =25 ° C, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V S
Supply Range
+5
+25
V
I q
Total Quiescent Current
80
130
mA
V OS
Input Offset Voltage
–20
+20
mV
I b
Non Inverting Input Bias Current
500
nA
P O
Music Output Power (*)
THD = 10%; R L =8
W
;
32
W
V S = + 22.5V
P O
Output Power
THD = 10%
R L =8
;
V S + 16V; R L =4
W
20
25
25
W
W
W
;
V S + 16V; R L =4
W
20
20
W
W
W
THD
Total Harmonic Distortion
R L =8
W
;P O = 1W; f = 1KHz
0.01
%
;
P O = 0.1 to 15W;
f = 100Hz to 15KHz
W
0.7
%
R L =4
W
;P O = 1W; f = 1KHz
0.02
%
;V S + 16V;
P O = 0.1 to 12W;
f = 100Hz to 15KHz
W
1
%
C T
Cross Talk
f = 1KHz
f = 10KHz
70
60
dB
dB
SR
Slew Rate
10
V/
m
s
G OL
Open Loop Voltage Gain
80
dB
e N
Total Input Noise
A Curve
f = 20Hz to 22KHz
3
4
m
V
8
m
V
R i
Input Resistance
15
20
K
W
SVR
Supply Voltage Rejection
(each channel)
fr = 100Hz
Vr = 0.5V
60
dB
T j
Thermal Shut-down
Junction Temperature
145
°
C
MUTE FUNCTION [ref: +V S ]
VT MUTE
Mute / Play Threshold
-7
-6
-5
V
A M
Mute Attenuation
60
70
dB
STAND-BY FUNCTION [ref: +V S ]
VT ST-BY
Stand-by / Mute Threshold
-3.5
-2.5
-1.5
V
A ST-BY
Stand-by Attenuation
110
dB
I q ST-BY
Quiescent Current @ Stand-by
3
mA
W
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 1K Hz.
±
22.5V with R L =8
W
and V S =
±
16V with R L =4
3/11
THD = 1%
R L =8
R L =8
R L =4
Note :
(*) FULL POWER up to .V S =
199643523.004.png
TDA7265
Figure 2: Quiescent Current vs. Supply Voltage
Figure 3: Frequency Response
Figure 4: Output Power vs. Supply Voltage
Figure 5: T.H.D. vs. Output Power
Figure 6: Output Power vs. Supply Voltage
Figure 7: T.H.D. vs. Output Power
4/11
199643523.005.png
TDA7265
Figure 8: Quiescent Current vs. Pin # 5 Voltage
Figure 9: Attenuation vs. Pin # 5 Voltage
Figure 10: SVR vs. Frequency
Figure 11: Crosstalk vs. Frequency
Figure 12: Power Dissipaton vs. Output Power
Figure 13: Power Dissipaton vs. Output Power
5/11
199643523.001.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin