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參數(shù)資料
| 型號(hào)： | STV8223B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard Video and Sound IF System with Audio and Video Switches(低音頻和視頻開關(guān)的多標(biāo)準(zhǔn)視頻和聲音IF系統(tǒng)) |
| 中文描述： | 多標(biāo)準(zhǔn)視頻和聲音中頻與音頻視頻開關(guān)系統(tǒng)（低音頻和視頻開關(guān)的多標(biāo)準(zhǔn)視頻和聲音中頻系統(tǒng)） |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大?。?/td> | 112K |
| 代理商： | STV8223B |
ELECTRICALCHARACTERISTICS
(T
amb
= 25
°
C,V
CC
=9V,IF input= 10mV
RMS
synclevelat B/G,
VideomodulationDSB,D = 90% at B/G,f
PC
= 38.9MHz,f
SC
=33.4MHz,
VideoBW = 5MHz, Soundcarrier input: 5.5MHz,10mV
RMS
, f
M
= 1kHz,AudioBW = 20kHz,
f =
±
50kHz,
Volumeattenuation= 0dB,unless otherwisespecified)
Symbol
SUPPLY
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
CC
I
CC
Supply Voltage
Supply Current
8
9
70
12.6
95
V
I
17
, V
CC
= 9V
mA
IF AMPLIFIER
V
19-20
R
19-20
C
19-20
Gr
Input Sensitivity (RMS)
Differential Input Resistance
Differential Input Capacitance
Gain Control Range
Max Input Signal
-3dB Video at Output
70
2
2
68
180
μ
V
RMS
k
pF
dB
mV
RMS
+1dB Video at Output
SYNCHRONOUS VIDEO DEMODULATOR
DF
PC
Vision Carrier Capture
AFC
-1.4
1.6
MHz
S2
AFC Slope
See Figure 21
0.2
μ
A/kHz
DEMODULATED VIDEO OUTPUT (Pin 3)
V
A3
Amplitude
Amplitude Difference
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
I
22CBG
Charging Current
I
22DBG
Discharge Current
C/D
Charging/Discharging Ratio
TUNER AGC
Top Sync to White
2
2.3
2.6
10
2.2
V
PP
%
V
V
MHz
%
Degree
mV
mV
mA
dB
dB
V
V
V
V
BG vs L
V
S3
B/G
B/G
-3dB Video Signal
1.6
1.9
4.4
9
6
3
1
1
5
61
52
4.85
3.6
1.3
2.5
BW
Dg
Dp
Vr3c
Vr3h
I
3
S/N
7
8
6
10
10
3
56
Note 1 - Weighted CCIR-567
Note 2
V
WTH
V
WIL
V
BTH
V
BIL
550
12
950
20
45
1300
28
μ
A
μ
A
I
23
S23
I
23+
Maximum Sinked Current
Current Slope
Maximum Tuner Plus Sinked Current
1.5
100
2
2.5
230
mA
μ
A/dB
mA
R
24
= 5k
Note 3
170
40
Notes :
1.
S
N
=
20 log 10V
outblack white
2. Video carrier relativelevel = 0dB,Chroma subcarrier level = -3.2dB, Sound carrier relative level = -20dB. AGC voltage (Pin 22)
is adjustedto get 1V
PP
signalon output (Pin 3).
3. Additional sinked currentfor large increasing steps of input signal when:
- VoltagePin 22 > startingpoint defined Pin 24.
- Outputsignal (Pin 3) saturated(V
3
< V BTH inBG mode).
V
N
(
mV
RMS
)
atBW = 5MHz
8
STV8223B
3/10
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