TDA2030 Datasheet, PDF (10/14 Pages) STMicroelectronics – 14W Hi-Fi AUDIO AMPLIFIER

TDA2030A LINEAR INTEGRATED CIRCUIT
The components values calculated for fc=900Hz using a Bessel 3rd Sallen and Key structure are:
C1=C2=C3=22nF,R1=8.2K
W,R2=5.6KW,R3=33KW.
Using this type of crossover filter, a complete 3-way 60W active loudspeaker system is shown in Fig. 20.
It employs 2nd order Buttherworth filter with the crossover frequencies equal to 300Hz and 3kHz.
The midrange section consistors of two filters a high pass circuit followed by a low pass network. With Vs=36V the
output power delivered to the woofer is 25W at d=0.06%( 30W at d=0.5%).The power delivered to the midrange and
the tweeter can be optimized in the design phase taking in account the loudspeaker efficiency and impedance(RL=4 W
to 8W).
It is quite common that midrange and tweeter speakers have an efficiency 3dB higher than woofers.
Vs+
Low-pass
300Hz
IN
1 mF
22k W
22k W
1
5
BD908
100 mF
Contek
4
2 ^TDA2030A
3
BD907
2200 mF
Vs+
Band-pass
300Hz to 3kHz
0.1 mF 0.1 mF _{22k W}
High-pass
3kHz
0.1 mF 0.1 mF
22k W
100 mF
47 mF
0.22 mF
Vs+
1N4001
1
5
Contek
4
TDA2030A
2
3
1N4001
2.2k W
0.22 mF
Vs+
1N4001
1
5
Contek
4
TDA2030A
2
3
1N4001
2.2k W
High-pass
3kHz
Woofer
220 mF
Midrange
100 mF
Tweeter
Contek Microelectronics Co.,Ltd.
10
CONTEK
http://www.contek-ic.com E-mail:[e-mail]