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TDA7541 데이터시트(PDF) 24 Page - STMicroelectronics

부품명 TDA7541
상세설명  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
PDF  76 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7541 데이터시트(HTML) 24 Page - STMicroelectronics

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Electrical specifications and characteristics
TDA7541
24/76
3.
SCA (subsidiary communications authorization)
measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA - sub carrier (fS = 67kHz, unmodulated)
4.
ACI (adjacent channel interference)
measured with: 90% mono signal; 9% pilot signal; fm=1kHz; 1% spurious signal (fS = 110kHz or 186kHz, 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.
a67
V
o signa l @ 1 k Hz
,
()
V
o spuriou s @9 kHz
,
()
------------------------------------------------------------- ƒs
2
38kHz
×
() 67kHz
–
()
=
;
=
a114
V
o signa l @ 1 k Hz
,
()
V
o sp urio us @ 4 kHz
,
()
------------------------------------------------------------- ƒs
110kHz
2
38kHz
×
()
–
()
=
;
=
a190
V
o signa l @ 1 k Hz
,
()
V
o sp urio us @ 4 kHz
,
()
------------------------------------------------------------- ƒs
186kHz
5
38kHz
×
()
–
()
=
;
=
Table 9.
PLL section
(Tamb=25°C, VCC1=VCC2=VCCMIX1=VCCVCO=VCCIF=8.5V, fXtal = 10.25 MHz,
VMPX=500mVrms mono, f=1kHz, de-emphasis τ=50µs, in application circuit, unless
otherwise specified)
Item
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
40. Voltage controlled oscillator (VCO)
40.1
fVCOmin Min. VCO frequency
160
MHz
40.2
fVCOmax Max. VCO frequency
260
MHz
40.3
C/N
Carrier-to-noise-ratio
fVCO= 200MHz, Δf=1KHz,
B=1Hz, Qloaded=60
80
dBc/
√Hz
41. Crystal oscillator
41.1
fxtal
Crystal frequency
10.25
MHz
41.2
C/N
Carrier-to-noise-ratio
fxtal =10.25MHz, Δf=10KHz
110
dBc/
√Hz
41.3
V29
Oscillator output voltage
400
mVrms
41.4
C29-32
Input capacitance
2.5
pF
41.5
Cstep
Min. cap. Step
XTAL
0.75
pF
41.6
Cmax
Max. cap.
XTAL
23.25
pF
41.7
Δf/f
Deviation versus VCC
Δ V
CC=1V
1.5
ppm/V
41.8
Δf/f
Deviation versus T
-40°C<T<+85°C
0.2
ppm/K
42. Charge pump current
42.1
-I20
Source current
V20 = 2.5V
50
μA
42.2
I20
Sink current
50
μA
42.3
-I20
Source current
ICP, V20 = 2.5V
550
μA
42.4
I20
Sink current
500
μA



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