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TDA7514 Arkusz danych(PDF) 21 Page - STMicroelectronics

Numer części TDA7514
Szczegółowy opis  SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR
PDF  74 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7514 Arkusz danych(HTML) 21 Page - STMicroelectronics

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TDA7514
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Blend Adjustment
The filtered Smeter input to the SNC detector has variable gain and
offset. See SNC Detector specs.
High Cut Control
VHCH
VHCH = a * b * 4V
(level = Smeter * 1.0)
see below
a
VHCH Shift “a” factor
0001
97
%
0010
73
%
0100
50
%
1000
32
%
b
VHCH “b” factor
00
67
%
01
75
%
10
83
%
11
92
%
VHCL
VHC Control Voltage for FULL
Highcut Rolloff
for HCC control from level (where level = Smeter * 1.0):
VHCL = a * b * c * 4V
(or VHCL = c * VHCH)
for HCC control from SNC:
VHCL = 2V + a * b * c * 3V
c
VHCL “c” factor
00
16.70
%
01
22.20
%
10
27.80
%
11
33.30
%
fc range
HCC Filter cutoff frequency
range
00
20kHz
~
4kHz
01
10kHz
~
2kHz
10
4kHz
~
800Hz
11
4kHz
~
800Hz
HCC step
Number of settings (per
range)
32
Table 8. Quality Actuators (continued)



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