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TDA7541B Datasheet(PDF) 23 Page - STMicroelectronics

Part # TDA7541B
Description  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7541B Datasheet(HTML) 23 Page - STMicroelectronics

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TDA7541B
Electrical specifications and characteristics
Doc ID 16048 Rev 1
23/77
39.2
a
Max. quality detector
coefficient
QDC
0.9
1.05
1.2
-
39.3
b
Min. quality noise gain
QNG
5
6
7
dB
39.4
b
Max. quality noise gain
QNG
13
15
17
dB
1.
Intermodulation suppression
measured with: 91 % stereo signal; 9 % pilot signal; fm = 10 kHz or 13 kHz.
2.
Traffic radio (V.F.) suppression
measured with: 91% stereo signal; 9% pilot signal; fm=1 kHz; 5% sub carrier (f=57 kHz, fm=23 Hz AM, m=60 %)
3.
SCA (subsidiary communications authorization)
measured with: 81 % mono signal; 9 % pilot signal; fm=1 kHz; 10 % SCA - sub carrier (fS = 67 kHz, unmodulated)
4.
ACI (adjacent channel interference)
measured with: 90 % mono signal; 9 % pilot signal; fm=1 kHz; 1% spurious signal (fS = 110 kHz or 186 kHz, unmodulated)
5.
All thresholds are measured in test mode at the quality output. The thresholds are calculated by VNBTH - VPEAK. VPEAK can
be adjusted by applying a 150 kHz sinewave at MPXIN.
Table 8.
Stereo decoder section (continued)
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
a2
V
o signal @ 1 kHz
,
()
V
o spuriou s @1 kHz
,
()
--------------------------------------------------------------- ƒs
2
10 kHz
×
() 19 kHz
–
()
=
;
=
a3
V
o signal @ 1 kHz
,
()
V
o spuriou s @1 kHz
,
()
--------------------------------------------------------------- ƒs
3
13 kHz
×
() 38 kHz
–
()
=
;
=
a57 V W F
,
,
()
V
o signal @ 1 kHz
,
()
V
o sp urio us @1 kHz
,
() 23 kHz
±
------------------------------------------------------------------------------------------
=
a67
V
o signal @ 1 kHz
,
()
V
o spuriou s @9 kHz
,
()
--------------------------------------------------------------- ƒs
2
38 kHz
×
() 67 kHz
–
()
=
;
=
a114
V
o signal @ 1 kHz
,
()
V
o sp urio us @ 4 kHz
,
()
--------------------------------------------------------------- ƒs
110 kHz
2
38 kHz
×
()
–
()
=
;
=
a190
V
o signal @ 1 kHz
,
()
V
o sp urio us @ 4 kHz
,
()
--------------------------------------------------------------- ƒs
186 kHz
5
38 kHz
×
()
–
()
=
;
=



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