參數(shù)資料
型號(hào)： STV2246
元件分類： 參考電壓二極管
英文描述： Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode
中文描述： 250 的低電流運(yùn)算，低反向泄露，低噪聲穩(wěn)壓二極管
文件頁數(shù)： 24/76頁
文件大小： 2157K
代理商： STV2246
STV223XD/224XC - ELECTRICAL CHARACTERISTICS
24/76
Note 1:
Additional sinked current for large increasing steps of input signal when:
- Voltage at PIFinput > Tuner AGC starting point adjustment given by the WR03(d5 to d0)
- Output Signal (IntCVBSout) saturated (VIntCBVSoutVwth) in positive modulation.
SYNCHRONOUS VIDEO DEMODULATOR
Note 2
: This parameter is not tested during production, it is tested during the qualification phase.
DEMODULATED VIDEO OUTPUT (INTCVBSOUT PIN)
Note 3
: S/N = 20 log [PIFOUT Black to White / V
NOISE
(mV
RMS
) weighted CCIR 567.
Note 4
: Supply Voltage ripple rejection = 20log (V
SUPPLY/
V
OUTPUT
) measured at 100 Hz with V
AC
Max. = 100 mVpp applied
to V
CC IF
= 5 V.
Symbol
DFPC
Parameter
Test Conditions
Min.
Typ
±2
Max.
Unit
MHz
Vision Carrier Capture Range
Maximum VCO Frequency for PIF
regeneration
PIF Input Signal for PIF PLL locking
PIFVCO Temperature Coefficient
f
VCO
With external LC network at 50 MHz
(see Note 2)
50
MHz
V
ILOCK
TVCO
40
70
±20
μV
RMS
ppm/K
Symbol
Parameter
Test Conditions
Black-to-White Video amplitude:
reg 02 data = 10h
(INTCVBSOUT =2 V
PP
)
reg 02 data = 90h
(INTCVBSOUT =2.3 V
PP
)
Video amplitude bus register
Typ.: reg 02 data = 10 hex
Min.
Typ
Max.
Unit
PIFOUT-Q
PIFOUT-I
Video Amplitude at INTCVBSOUT
Pin
1.19
1.36
1.4
1.6
1.61
1.84
V
BG/L
BG to L Ratio
5
8
%
DG
DP
V
PIF
V
R2IF
S/N
Differential Gain
Differential Phase
Residual Carrier Signal
Residual 2nd Harmonic
Video Output S/N Ratio
3
3
1
1
60
5
5
10
10
%
deg
mV
RMS
mV
RMS
dB
See Note 3
reg 02 data = 90h
2.3 V
PP
at INTCVBSOUT Pin
reg 02 data = 90h
2.3 V
PP
at INTCVBSOUT Pin
reg 02 data = 90h
2.3 V
PP
at INTCVBSOUT Pin
reg 02 data = 90h
2.3 V
PP
at INTCVBSOUT Pin
55
V
WTH
White Noise Threshold Voltage
6.7
V
V
WIL
White Noise Insertion Level
3.7
V
V
BTH
Black Noise Threshold Voltage
1
V
V
BIL
Black Noise Insertion Level
2.6
V
BW
Video Bandwidth
Luminance Non Linearity
Internal Output Resistance
6
8
10
5
MHz
%
LUMLIN
ROUT
50
RLOAD
Output Load Resistance
reg 02 data = 10hex
(INTCVBOUT = 2 V
PP
)
reg 02 data = 90hex
(INTCVBSOUT = 2.3 V
PP
)
Top Sync Level
Intercarrier Mode
Video signal Grey level (see Note 4)
BG standard
L standard
2
3
k
IVID
Video Output Source Current
7
10
13
mA
DCOUT
Inter Mod.
DC Output Level
1.07 MHz Intermodulation
2
52
V
dB
PSRR
Power Supply Ripple Rejection
35
30
dB
NH
Suppression of Video signals har-
monics
35
40
dB
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