STV8223A 查看數據表（PDF） - STMicroelectronics
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STV8223A Datasheet PDF : 10 Pages
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STV8223A
ELECTRICAL CHARACTERISTICS
(Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Video modulation DSB,
D = 90% at B/G, fPC = 38.9MHz, fSC = 33.4MHz, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mVRMS, fM = 1kHz, Audio BW = 20kHz, ∆f = ±50kHz,
Volume attenuation = 0dB, unless otherwise specified)
Symbol
Parameter
SUPPLY
VCC Supply Voltage
ICC Supply Current
IF AMPLIFIER
V19-20
R1 9-20
C1 9-20
Gr
Input Sensitivity (RMS)
Differential Input Resistance
Differential Input Capacitance
Gain Control Range
Max Input Signal
SYNCHRONOUS VIDEO DEMODULATOR
Test Conditions
I17, VCC = 9V
-3dB Video at Output
+1dB Video at Output
Min. Typ. Max. Unit
8
9 12.6 V
70
95
mA
70
µVRMS
1.5
kΩ
2
pF
64
dB
110
mVRMS
DFPC Vision Carrier Capture
AFC
S2 AFC Slope
DEMODULATED VIDEO OUTPUT (Pin 3)
VA3
VS3
BW
Dg
Dp
Vr3c
Vr3h
I3
S/N
VWTH
VWIL
VBTH
VBIL
Amplitude
Top Sync Level
Zero Carrier Level
Bandwidth
Differential Gain
Differential Phase
Residual Carrier Signal (RMS Value)
Residual 2nd Harmonic (RMS Value)
Internal Bias of Emitter Follower
Signal to Noise Ratio
Intermodulation 1.07MHz
White Noise Threshold Voltage
White Noise Insertion Level
Black Noise Threshold Voltage
Black Noise Insertion Level
AGC CIRCUIT (BG MODE)
I22CBG
I22DBG
C/D
Charging Current
Discharge Current
Charging/Discharging Ratio
TUNER AGC
See Figure 20
Top Sync to White
B/G
B/G
-3dB Video Signal
Note 1 - Weighted CCIR-567
Note 2
-1.4
1.6 MHz
0.2
µA/kHz
2
2.3 2.6 VPP
1.6 1.9 2.2
V
4.4
V
6
7
MHz
6
8
%
6
8 Degree
1
10 mV
1
10 mV
3
5
mA
53 58
dB
52
dB
4.85
V
3.6
V
1.3
V
2.5
V
550 950 1300 µA
12
20
28
µA
45
I23 Maximum Sinked Current
S23 Current Slope
R24 = 5kΩ
I23+ Maximum Tuner Plus Sinked Current Note 3
1.5
2
2.5 mA
100 170 230 µA/dB
40
mA
Notes : 1.
S
N
=
20
log
10
Vout black white
VN (mVRMS)
at BW = 5MHz
2. Video carrier relative level = 0dB, Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22)
is adjusted to get 1VPP signal on output (Pin 3).
3. Additional sinked current for large increasing steps of input signal when :
- Voltage Pin 22 > starting point defined Pin 24.
- Output signal (Pin 3) saturated (V3 < V BTH in BG mode).
3/10
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