TDA7406 STMicroelectronics, TDA7406 Datasheet - Page 38
![IC PROCESSOR CAR SIGNAL 44-TQFP](/photos/6/84/68458/497-44-tqfp_44-lqfp_sml.jpg)
TDA7406
Manufacturer Part Number
TDA7406
Description
IC PROCESSOR CAR SIGNAL 44-TQFP
Manufacturer
STMicroelectronics
Type
Car Signal Processorr
Datasheet
1.TDA7406TR.pdf
(64 pages)
Specifications of TDA7406
Applications
Automotive Systems
Mounting Type
Surface Mount
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TDA7406
Manufacturer:
ANALOG
Quantity:
420
Company:
Part Number:
TDA7406TR
Manufacturer:
STMicroelectronics
Quantity:
10 000
Functional Description of Stereodecoder
8.9
38/64
between 0dB and the maximum separation. Internally this control range has a fixed upper
limit which is the internal reference voltage REF5V. The lower limit can be programmed
between 20 and 70% of REF5V in 3.3% steps (see figs.26, 27).
To adjust the external LEVEL-voltage to the internal range two values must be defined: the
LEVEL gain LG and VSBL (see
external level signal has to be amplified so that internally it becomes equal to REF5V. The
second point (e.g. 10dB channel sep.) is then adjusted with the VSBL voltage.
Figure 26. Internal stereoblend characteristics
The gain can be programmed through 4 bits in the “Stereodecoder-Adjustment”-byte. All
necessary internal reference voltages like REF5V are derived from a bandgap circuit.
Therefore they have a temperature coefficient near zero.
Figure 27. Relation between internal and external LEVEL-voltages for setup of
Highcut Control
The highcut control set-up is similar to the stereoblend control set-up: the starting point
VHCH can be set with 2 bits to be 42, 50, 58 or 66% of REF5V whereas the range can be
set to be 17, 22, 28 or 33% of VHCH (see
Stereoblend
Figure
27). At the point of full channel separation the
Figure
28).
70
20
TDA7406