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TDA7266M

P1-P3P4-P6P7-P9
+V
S
(V)
V
IN
(mV)
V
ST-BY
pin 7
I
q
(mA)
ST-BY
MUTE
PLAY MUTE ST-BY
+18
1.8
0.8
V
MUTE
pin 6
4.1
2.3
OFF
OFF
D96AU259
V
OUT
(V)
2.9
1.3
Figure 2:
Microprocessor Driving Signals.
(B) Low Cost Application
In low cost applications where the mP is not pre-
sent, the suggested circuit is shown in fig.3.
The St-by and mute terminals are tied together
and they are connected to the supply line via an
external voltage divider.
The device is switched-on/off from the supply line
and the external capacitor C4 is intended to delay
the St-by and mute threshold exceeding, avoiding
"Popping" problems.
TDA7266M
4/9
1
2
4
Vref
ST-BY
7
IN1
C3 0.22µF
V
CC
133
D98AU834B
+
-
-
+
OUT1+
OUT1-
MUTE
6
8
9
S-GND
PW-GND
C1
470µF
C2
100nF
R1
47K
C4
10µF
R2
47K
Vs
Figure 3a:
Stand-alone Low-cost Application.
Figure 3b:
PCB and Component Layout of the Application Circuit (Fig. 1).
DASHED PARTS
ARE NOT TO BE
CONSIDERED
TDA7266M
5/9
0.010
0.1
1
10
0.1 1 10
Vcc = 11 V
Rl = 8 ohm
f = 15 KHz
f = 5 KHz
f = 1 KHz
Pout (W)
THD (%)
Figure 4:
Distortion vs Output Power
0.010
0.1
1
10
0.1 1 10
THD(%)
Vcc = 9V
Rl= 8 ohm
f = 15KHz
f = 5 KHz
f = 1KHz
Pout (W)
Figure 5:
Distortion vs Output Power
0.010
0.1
1
10
100 1k 10k 20k
THD(%)
Vcc = 11 V
Rl = 8 ohm
Pout = 100mW
Pout = 2W
frequency (Hz)
Figure 6:
Distortion vs Frequency
-5.000
-4.000
-3.000
-2.000
-1.000
0.0
1.0000
2.0000
3.0000
4.0000
5.0000
10 100 1k 10k 100k
Level(dBr)
Vcc = 11V
Rl = 8 ohm
Pout = 1W
frequency (Hz)
Figure 7:
Gain vs Frequency
0.0
2.0000
4.0000
6.0000
8.0000
10.000
12.000
14.000
16.000
18.000
20.000
2.000 4.000 6.000 8.000 10.00 12.00 14.00 16.00 18.00
Po(W)
Vs(V)
d = 10%
d = 1%
Rl = 8 ohm
f = 1KHz
Figure 8:
Output Power vs. Supply Voltage
00.511.522.533.544.555.566.577.58
0
0.5
1
1.5
2
2.5
3
3.5
4
0
10
20
30
40
50
60
70
80
Pd (W)
µ(%)
Pout(W)
Vcc = 11V
Rl = 8ohm
f = 1KHz
Pd
µ
Figure 9:
Total Power Dissipation & Efficiency
vs. Output Power
TDA7266M
6/9
P1-P3P4-P6P7-P9

TDA7266M

Mfr. #:
Buy TDA7266M
Manufacturer:
STMicroelectronics
Description:
Audio Amplifiers 7W MONO BRIDGE AMP
Lifecycle:
New from this manufacturer.
Delivery:
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