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STV224XC 데이터시트(PDF) 25 Page - STMicroelectronics

부품명 STV224XC
상세설명  I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  76 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV224XC 데이터시트(HTML) 25 Page - STMicroelectronics

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STV223XD/224XC - ELECTRICAL CHARACTERISTICS
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SIF AMPLIFIER
Note 5: L standard Sc/Pc = -10 dB, Nyquist Pc = -6 dB, SIF input -4 dB with PIF input = 84 µV, BG standard Sc/Pc = -
13 dB, Nyquist Pc = -6 dB, SIF input -7 dB with PIF input = 85 µV.
Note 6: This parameter is not tested during production. It is tested on the validation bench during the qualification phase.
SIF AGC (FM)
SIF AGC (AM)
DEEMPHASIS
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VINSIF
SIF Input Sensitivity
- 3dB at AM/FMOUT Pin (see Note 5)
AM output amplitude,
FM subcarrier amplitude
55
40
µVRMS
GRSIF
Gain Control Range
- 3dB to +1dB at AM/FMOUT Pin
60
dB
CINSIF
Differential Input Capacitance
SIF Inputs (see Note 6)
1.5
2
2.5
pF
RINSIF
Differential Input Resistance
SIF Inputs
1.5
2
2.5
k
Ω
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
IC
Charging Current
2.4
mA
ID
Discharging Current
100
µA
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
INORMAL
Charging/Discharging Current
Normal time constant
±6
µA
IFAST
Charging/Discharging Current
Fast time constant
±2.4
mA
FM DEMODULATOR
Electrical parameter valid in both QSS and Intercarrier modes, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
SIFMin
Min. Broadcast Sound/Video Carri-
er Ratio
Intercarrier mode: SAW filter K2955M
at SNR 35 dB
-30
dB
VOAF
FM Audio Output Amplitude at AM/
FMOUT Pin
FM dev = ±27kHz BGDKI
FM dev = ±13.5kHz MN
400
500
630
mVRMS
DFMX
Maximum FM Deviation
THD < 10%
170
kHz
THD_FM
Total Harmonic Distortion
FM dev = ±27kHz BGDKI
0.3
1
%
S/N
Audio S/N
Weighted according to CCIR468-4
Quasi-Peak
55
dB
AMR
Amplitude Modulation Rejection
m = 30%, AF = 1 kHz
32
dB
SVR
Supply Voltage Rejection
See Note 4
45
dB
S/N
vsvideo
S/N versus picture content, Inter-
carrier mode
Intercarrier mode: SAW filter K2955M
Black picture,
White picture,
250 kHz squarewave
52
50
52
dB
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
deemp-T1 De-emphasis Time Constant
B,G,D,K,I standards
50
µs
deemp-T2 De-emphasis Time Constant
M, N, standards
75
µs



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