tda7269, Ham- CB Radio, Karty katalogowe
[ Pobierz całość w formacie PDF ]
[
TDA7269
10 + 10W STEREO AMPLIFIER WITH MUTE & ST-BY
WIDE SUPPLY VOLTAGE RANGE UP TO
±
20V
SPLIT SUPPLY
HIGH OUTPUT POWER
10 + 10W @ THD =10%, R
L
=8
W
,V
S
= +14V
NO POP AT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW I
q
)
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION TO GND
Multiwatt11
ORDERING NUMBER:
TDA7269
DESCRIPTION
The TDA7269 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
1/7
TDA7269
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
DC Supply Voltage
±
22
V
I
O
Output Peak Current (internally limited)
3
A
P
tot
Power Dissipation T
case
=70
°
C
40
W
T
op
Operating Temperature
0 to 70
°
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
2.8
°
C/W
SINGLE SUPPLY APPLICATION
D1 5.1V
+V
S
R1
10K
C1
1
m
F
R3
15K
C5
1000
m
F
C6
0.1
m
F
MUTE/ST-BY
5
7
3
PLAY
5V
Q1
BSX33
IN (L)
C9 470
m
F
+
4
OUT (L)
0
MUTE
C3 1
m
F
-
R2
15K
R4
30K
R8
4.7
W
OUT
(L)
8
IN- (L)
C7
0.1
m
F
C2
100
m
F
9
R5
1K
C4 1
m
F
IN (R)
11
C10 470
m
F
+
-
2
IN- (R)
10
OUT (R)
R6
30K
R9
4.7
W
OUT
(R)
C8
0.1
m
F
1
6
R7
1K
GND
D96AU444
2/7
TDA7269
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit, V
S
= + 14V; 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
+20
V
I
q
Total Quiescent Current
60
100
mA
V
OS
Input Offset Voltage
–25
+25
mV
I
b
Non Inverting Input Bias Current
500
nA
P
O
Output Power
;
V
S
+ 12.5V; R
L
=4
W
8
7.5
10
10
W
W
W
;
V
S
+ 12.5V; R
L
=4
W
7.5
7.5
W
W
W
THD
Total Harmonic Distortion
R
L
=8
W
;P
O
= 1W; f = 1KHz
0.03
%
;
P
O
= 0.1 to 5W;
f = 100Hz to 15KHz
W
0.7
%
R
L
=4
W
;P
O
= 1W; f = 1KHz
0.02
%
;V
S
+ 10V;
P
O
= 0.1 to 5W;
f = 100Hz to 15KHz
W
1
%
C
T
Cross Talk
f = 1KHz
f = 10KHz
70
60
dB
dB
50
SR
Slew Rate
6.5
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
]
(Only for Split Supply)
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
6
mA
(*)
In mute condition the current drawn from Pin 5 must be
650
m
A.
3/7
THD = 10%
R
L
=8
THD = 1%
R
L
=8
R
L
=8
R
L
=4
3
TDA7269
MUTE STAND-BY FUNCTION
The pin 5 (MUTE/STAND-BY) controls the ampli-
fier status by two different thresholds, referred to
+V
S
.
- When V
pin5
higher than = +V
S
- 2.5V the
amplifier is in Stand-by mode and the final
stage generators are off
- when V
pin5
is between +V
S
- 2.5V and +V
S
- 6V the final stage current generators are
switched on and the amplifier is in mute
mode
- when V
pin5
is lower than +V
S
- 6V the am-
plifier is play mode.
Figure 2
+V
S
(V)
20
t
-V
S
-20
V
IN
(mV)
Vpin5
(V)
V
S
V
S
-2.5
V
S-
6
V
S
-10
I
q
(mA)
0
VOUT
(V)
OFF
PLAY
STDBY
PLAY
OFF
STDBY
STDBY
MUTE
D94AU086
MUTE
MUTE
MUTE
4/7
TDA7269
Figure 3:
Test and Application Circuit (Stereo Configuration)
+V
S
C4
C5
R2
C3
+V
S
MUTE/
ST-BY
5
7
3
R1
IN (L)
+
4
OUT (L)
SW1
C1
-
DZ
R5
IN- (L)
R7
RL (L)
8
C8
R4
R3
GND
9
R6
SW2
10
IN- (R)
R9
R8
C2
IN (R)
11
-
2
OUT (R)
+
R10
1
6
RL (R)
-V
S
C9
D94AU087
C7
C6
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
nents are those shown are the demo board sche-
matic different values can be used: the following
table can help the designer.
COMPONENTS
RECOMMENDED
VALUE
PURPOSE
LARGER THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
R1
10K
W
Mute Circuit
Increase of Dz
Biasing Current
R2
15K
W
Mute Circuit
V
pin
# 5 Shifted Downward V
pin
# 5 Shifted Upward
R3
18K
W
Mute Circuit
V
pin
# 5 Shifted Upward
V
pin
# 5 Shifted Downward
R4
15K
W
Mute Circuit
V
pin
# 5 Shifted Upward
V
pin
# 5 Shifted Downward
R5, R8
18K
W
Closed Loop Gain
Setting (*)
Increase of Gain
R6, R9
560
W
Decrease of Gain
R7, R10
4.7
W
Frequency Stability Danger of Oscillations
Danger of Oscillations
C1, C2
1
F
Input DC
Decoupling
Higher Low Frequency
Cutoff
C3
1
F
St-By/Mute Time
Constant
Larger On/Off Time
Smaller On/Off Time
C4, C6
1000
m
F
Supply Voltage
Bypass
Danger of Oscillations
C5, C7
0.1
m
F
Supply Voltage
Bypass
Danger of Oscillations
C8, C9
0.1
m
F
Frequency Stability
Dz
5.1V
Mute Circuit
(*) Closed loop gain has to be => 25dB
5/7
m
m
[ Pobierz całość w formacie PDF ]