ST TDA7233 User Manual
TDA7233
Fi
1W AUDIO AMPLIFIER WITH MUTE
1 FEATURES
OPERATING VOLTAGE 1.8 TO 15 V
EXTERNAL MUTE OR POWER DOWN
FUNCTION
IMPROVED SUPPLY VOLTAGE REJECTION
LOW QUIESCENT CURRENT
HIGH POWER CAPABILITY
LOW CROSSOVER DISTORTION
2 DESCRIPTION
The TDA7233/D is a monolithic integrated circuit
in 8 pin Minidip or SO8 package, intended for use
as class AB power amplifier with a wide range of
supply voltage from 1.8V to 15V in portable players, cordless telephones and Cellular Radios.
Figure 2. Pin Connection
gure 1. Package
Minidip
Table 1. Order Codes
Part Number Package
TDA7233 Minidip
TDA7233D SO8
SO8
May 2010
REV. 4
1/8
TDA7233
Table 2. Absolute Maximum Ratings
Symbol Parameter Value Unit
V
P
tot
I
O
T
stg
Figure 3. PIN CONNECTIONS (top view)
Supply Voltage 16 V
S
Total Power Dissipation at T
= 50 °C 1 W
amb
Output Peak Current 1 A
, TjStorage and Junction Temperature -40 to 150 °C
Minidip
SO8
Table 3. Thermal Data
Symbol Parameter SO8 MInidip Unit
R
th j-amb
Table 4. Electrical Characteristcs (V
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
V
O
I
d
I
b
P
O
d Distortion Po = 0.5W; f = 1KHz; R
Gv Closed Loop Voltage Gain f = 1KHz; 39 dB
R
in
e
N
SVR Supply Voltage Rejection f = 100Hz; R
I
M
Thermal Resistance Junction-ambient Max. 200 100 °C/W
= 6 V, T
s
= 25 °C, unless otherwise specified)
amb
Supply Voltage 1.8 15 V
Quiescent Output Voltage
Vs = 3 V
Vs = 9 V
2.7
1.2
4.2
Quiescent Drain Current MUTE HIGH 3.6 9 mA
MUTE LOW 0.4 mA
Input Bias Current 100 nA
Output Power d = 10%; f = 1kHz
Vs = 12V; R
Vs = 9V; R
Vs = 9V; R
Vs = 6V; R
Vs = 6V; R
Vs = 3V; R
Vs = 3V; R
= 8Ω
L
= 4Ω
L
= 8Ω
L
= 8Ω
L
= 4Ω
L
= 4Ω
L
= 8Ω
L
= 8Ω
L
1.9
1.6
1
0.4
0.7
110
70
0.3 %
Vs = 9V
Input Resistance f = 1KHz; 100 KΩ
Total Input Noise Rs = 10KΩ; B = Curve A
Rs = 10KΩ; B = 22Hz to 22KHz
= 10KΩ 45 dB
g
2
3
MUTE Attenuation Vo = 1V; f = 100Hz to 10KHz; 70 dB
MUTE Threshold 0.6 V
MUTE Current Vs = 15V 0.4 mA
V
W
W
W
W
W
mW
mW
µV
µV
2/8
TDA7233
Figure 4. Output Power versus Supply Voltage
Figure 5. Supply Voltage Rejection versus
Frequency
Figure 7. Quiescent Current versus Supply
Voltage
Figure 8. Total Power Dissipated versus
Supply Voltage
Figure 6. DC Output Voltage versus Supply
Voltage
3/8
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