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PDF TDA2050H Data sheet ( Hoja de datos )
| Número de pieza | TDA2050H | |
| Descripción | 32W Hi-Fi AUDIO POWER AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
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TDA2050
32W Hi-Fi AUDIO POWER AMPLIFIER
HIGH OUTPUT POWER
(50W MUSIC POWER IEC 268.3 RULES)
HIGH OPERATING SUPPLY VOLTAGE (50V)
SINGLE OR SPLIT SUPPLY OPERATIONS
VERY LOW DISTORTION
SHORT CIRCUIT PROTECTION (OUT TO
GND)
THERMAL SHUTDOWN
DESCRIPTION
The TDA 2050 is a monolithic integrated circuit in
Pentawatt package, intended for use as an audio
class AB audio amplifier. Thanks to its high power
capability the TDA2050 is able to provide up to
35W true rms power into 4 ohm load @ THD =
10%, VS = ±18V, f = 1KHz and up to 32W into
8ohm load @ THD = 10%, VS = ±22V, f = 1KHz.
Moreover, the TDA 2050 delivers typically 50W
music power into 4 ohm load over 1 sec at VS=
22.5V, f = 1KHz.
TEST AND APPLICATION CIRCUIT
Pentawatt
ORDERING NUMBERS: TDA2050V
TDA2050H
The high power and very low harmonic and cross-
over distortion (THD = 0.05% typ, @ VS = ±22V,
PO = 0.1 to 15W, RL=8ohm, f = 100Hz to 15KHz)
make the device most suitable for both HiFi and
high class TV sets.
March 1995
1/13
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1 page  
SPLIT SUPPLY APPLICATION SUGGESTIONS
The recommended values of the external compo-
nents are those shown on the application circuit
TDA2050
of fig. 2. Different values can be used. The follow-
ing table can help the designer.
Component
Recommended
Value
Purpose
R1
22kΩ
Input Impedance
R2
680Ω
Feedback Resistor
R3 22kΩ
R4
2.2Ω
Frequency Stability
C1 1µF Input Decoupling DC
C2
22µF
Inverting Input
DC Decoupling
C3
100nF
Supply Voltage Bypass
C4
C5
220µF
Supply Voltage Bypass
C6
C7
0.47µF
Frequency Stability
(*) The gain must be higher than 24dB
PRINTED CIRCUIT BOARD
The layout shown in fig. 2 should be adopted by
the designers. If different layouts are used, the
Larger than
Recommended Value
Increase of Input
Impedance
Decrease of Gain (*)
Increase of Gain
Danger of Oscillations
Increase of Switch
ON/OFF Noise
Smaller than
Recommended Value
Decrease of Input
Impedance
Increase of Gain
Decrease of Gain (*)
Higher Low-frequency
cut-off
Higher Low-frequency
cut-off
Danger of Oscillations
Danger of Oscillations
Danger of Oscillations
ground points of input 1 and input 2 must be well
decoupled from the ground return of the output in
which a high current flows.
5/13
5 Page 
A circuit for generating the test signal is given in
fig. 19.
The load network consists of a 40 µF capacitor, in
series with a 1 ohm resistor. The capacitor limits
the current due to the 20 Hz signal to a low value,
whereas for he short pulses the effective load im-
pedance is of the order of 1 ohm, and a high out-
put current is produced.
Using this signal and load network the measure-
ment may be made without causing excessive
dissipation in the amplifier. The dissipation in the
1 ohm resistor is much lower than a rated output
TDA2050
power of the amplifier, because the duty-cycle of
the high output current is low.
By feeding the amplifier output voltage to the X-
plates of an oscilloscope, and the voltage across
the 1 ohm resistor (representing the output cur-
rent) to the Y=plates, it is possible to read on the
display the value of the maximum instantaneous
output power.
The result of this test applied at the TDA 2050 is:
PEAK POWER = 100W typ
Figure 19: Test circuit for peak power measurement
11/13
11 Page | ||
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| PDF Descargar | [ Datasheet TDA2050H.PDF ] | |
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