TDA7406TR STMicroelectronics, TDA7406TR Datasheet - Page 17

• Manufacturer Part Number: TDA7406TR
• Description: IC PROCESSOR CAR SIGNAL 44-TQFP
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7406TR

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7406
4.2
4.2.1
Figure 3.
AutoZero
The AutoZero allows a reduction of the number of pins as well as external components by
canceling any offset generated by or before the In-Gain-stage (Please notice that externally
generated offsets, e.g. generated through the leakage current of the coupling capacitors,
are not canceled).
The auto-zeroing is started every time the DATA-BYTE 0 is selected and needs max. 0.3ms
for the alignment. To avoid audible clicks the Audioprocessor have to be muted by soft mute
or hard mute during this time.
AutoZero for Stereodecoder-Selection
A special procedure is recommended for selecting the stereodecoder at the input-selector to
guarantee an optimum offset-cancellation:
(Step 0: SoftMute or Mute the signal-path)
Step 1: Temporary deselect the stereodecoder at the input-selector
Step 2: Configure the stereodecoder via IIC-Bus
Step 3: Wait 1ms
Step 4: Select the stereodecoder
Input-stages
Description of the audioprocessor part
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