E-TDA7409DTR STMicroelectronics, E-TDA7409DTR Datasheet - Page 14

• Manufacturer Part Number: E-TDA7409DTR
• Description: IC PROCESSOR CAR SIGNAL 20SOIC
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of E-TDA7409DTR

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7409
1.8.2 Center Frequency
Figure 13 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.
Figure 13. Treble Center Frequencies @ Gain = 15dB
1.9 Speaker Attenuator
Due to practical aspects the steps in the speaker-attenuators are not linear over the full range. At attenuations
more than 24dB the steps increase from 1.5dB to 10dB (please see data byte specification).
1.10 Subwoofer Attenuator
The Subwoofer output is a single ended stereo output. The attenuator is exactly the same like the other speak-
ers.
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