TDA8222 Datasheet, PDF (4/9 Pages) STMicroelectronics – VIDEO & SOUND IF SYSTEM WITH VIDEO AND SOUND SWITCHES

TDA8222
ELECTRICAL CHARACTERISTICS (continued)
(Tamb = 25^oC, VCC = 9V, IF input = 10mVRMS top sync, D = 90%, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mVRMS, fm = 1kHz, Audio BW = 20kHz, ∆f = ± 25kHz,
Volume attenuation = 0dB, Rload on Pin 12 = 1kΩ, unless otherwise specified)
Symbol
Parameter
Test Conditions
DEMODULATED VIDEO OUTPUT (Pin 18) (continued)
DG
DP
V18
V18
I18
S/N
VWTH
VWIL
VBTH
VBIL
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
IF input = 5mVRMS top sync
Note 1
Note 2
See Figure 5
See Figure 5
AGC CIRCUIT
I24C Charging Current
I24D Discharge Current
C/D Charging / Discharging Ratio
TUNER AGC
I2
Sinked Current
S2 Current Slope
See FIgure 4
AFC
AFC Slope
See Figure 2, refer to test circuit
FM SOUND DEMODULATION
V16S
AMR
R16
Input Sensitivity
Amplitude Modulation Rejection
Limiter Input Resistance
-3dB FM detected signal
Note 3
AUDIO OUTPUT (PIn 11)
V11
THD
S
N
R11
Detected Audio Output Signal
Total Harmonic Distortion
Signal to Noise Ratio
Internal Deemphasis Resistor
Note 4
VOLUME CONTROL
VC range Control Range
See Figure 3
Min. Typ. Max.
3
7
3
7
1
10
2
20
3
5
55
50
4.5
3.2
1.3
2.5
550 900 1200
12
20
26
45
1.2
1.9
2.6
300
20
60
40
53
1.2
500
0.2
1
68
700 1000 1400
80
Notes :
1.
S
N
= 20 Log 10
VOUT black to white _{at BW = 5MHz}
VN (RMS)
2. Video carrier relative level = 0dB, Chroma subcarrier relative level = -3.2dB, Sound carrier relative level = -20dB.
3.
AMR
=
20
Log
V11 ( mVRMS )
VAM ( mVRMS )
(dB)
where
VAM
=
output
amplitude
in
AM
for
fm
=
1kHz
and
m
=
30%
4. ^S = 20 Log ^{V11 ( mVRMS )} (dB)
N
VN ( mVRMS )
Unit
%
Degree
mV
mV
mA
dB
dB
V
V
V
V
µA
µA
mA
µA/dB
mV/kHz
µV
dB
kΩ
mVRMS
%
dB
Ω
dB
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