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TDA7419 Datasheet(PDF) 5 Page - STMicroelectronics

Part # TDA7419
Description  3 band car audio processor
PDF  40 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7419 Datasheet(HTML) 5 Page - STMicroelectronics

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TDA7419
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Figure 1.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2.
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3.
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 4.
Loudness attenuation @ fP = 400 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 5.
Loudness center frequencies @ Attn. = 15 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6.
Loudness attenuation, fC = 2.4 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 7.
Soft-mute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 8.
Soft-step timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 9.
Bass control @ fC = 80 Hz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10.
Bass center frequencies @ gain = 15 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11.
Bass quality factors @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 12.
Bass normal and DC mode @ gain = 14 dB, fC = 80 Hz . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 13.
Middle control @ fC = 1 kHz, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 14.
Middle center frequencies @ gain = 14 dB, Q = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 15.
Middle quality factors @ gain = 14 dB, fc = 1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 16.
Treble control @ fC = 17.5 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 17.
Treble center frequencies @ gain = 15 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 18.
Subwoofer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 19.
Spectrum analyzer block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 20.
Timing of the spectrum analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 21.
Diagram of AC coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 22.
HPF diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 23.
Output selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 24.
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 25.
SO-28 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38



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