Page 1
MULTISTANDARDVIDEO AND SOUND IF SYSTEM
.
VIDEOPLLDEMODULATION
.
SOUNDPLLDEMODULATION
.
NEGATIVEMODULATION
.
AGC FORNEGATIVEMODULATION
.
AUDIO SWITCH
.
DC VOLUMECONTROL
.
VIDEOSWITCH
STV8223B
WITHAUDIO AND VIDEO SWITCHES
SHRINK24
(PlasticPackage)
DESCRIPTION
TheSTV8223Bisapictureand soundIFprocessor
formultistandardapplicationwithvery fewexternal
componentsand adjustments.
It provides the audio and video switches for one
SCART plug application.
PIN CONNECTIONS
PIF PLLFILTER
AFC OUTPUT
CVBS OUTPUT
SWITCHINGINPUT (INT/EXT)
IF LC
IF LC
AUDIO HIGH PASS FILTER
2nd IF SOUND INPUT
AUDIO AND 2nd IF DECOUPLING
1
2
3
4
5
6
7
8
9
24
23
22
21
20
19
18
17
16
ORDER CODE :
TUNERAGC STARTINGPOINT ADJUSTMENT
TUNERAGC OUTPUT
AGCCAPACITOR
NOT TO BE CONNECTED
IF INPUT
IF INPUT
GROUND
V
CC
EXTERNALAUDIO INPUT
STV8223B
INTERNALVIDEO INPUT
VIDEOSWITCH OUTPUT
EXTERNALVIDEO INPUT
January 1997
10
11
12
15
14
13
FM DEMODULATED AUDIO OUTPUT
AUDIOSWITCH OUTPUT
VOLUMECONTROL + MUTE
8223B -01.EPS
1/10
Page 2
STV8223B
BLOCKDIAGRAM
AFC
OUTPUT
PIF PLL
& AFC
EXT
CVBS
6dB
V
CC
1817125162
SWITCHED
11
CVBS
10
SIF
PLL
WHITE NOISE
&
SPOT INVERT
LOGIC
INTERFACE
LIMITER
AUDIO
Vref
STV8223B
3
SFE
5.5
4
8
9
SFE
6.5
IF INPUT
TUNER
AGC
OUTPUT
19
20
AGC
22
23
TUNER
AGC
24
SWITCHED
DC
VOLUME
MUTE
14 13 15 7
AUDIO
VID
AMP
16
EXT
AUDIO
AUDIO
OUT
Int/Ext
ABSOLUTE MAXIMUMRATINGS
Symbol Parameter Value Unit
V
S
Vx Tuner AGC Voltage V
T
stg
T
oper
Supply Voltage 13.5 V
CC
Storage Temperature -40, +150
Operating Temperature 0, +70
CVBS
OUT
V
o
C
o
C
8223B -02.EPS
8223B-01.TBL
THERMAL DATA
Symbol Parameter Value Unit
Junction-ambient Thermal Resistance Max. 75
2/10
R
th (j-a)
o
C/W
8223B-02.TBL
Page 3
STV8223B
ELECTRICALCHARACTERISTICS
=25°C, VCC=9V,IF input= 10mV
(T
amb
VideomodulationDSB,D = 90%at B/G,f
VideoBW= 5MHz, Soundcarrier input: 5.5MHz,10mV
Volumeattenuation=0dB,unlessotherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
SUPPLY
V
I
IF AMPLIFIER
V
19-20
R
19-20
C
19-20
Gr Gain Control Range 68 dB
SYNCHRONOUS VIDEO DEMODULATOR
DF
AFC
S2 AFC Slope See Figure 21 0.2 µA/kHz
DEMODULATED VIDEO OUTPUT (Pin 3)
V
BG vs L Amplitude Difference 10 %
V
BW Bandwidth -3dB Video Signal 7 9 MHz
Dg Differential Gain 6 8 %
Dp Differential Phase 3 6 Degree
Vr3c Residual Carrier Signal (RMS Value) 1 10 mV
Vr3h Residual 2nd Harmonic (RMS Value) 1 10 mV
S/N Signal to Noise Ratio Note 1 - Weighted CCIR-567 56 61 dB
V
WTH
V
V
V
AGC CIRCUIT
I
22CBG
I
22DBG
C/D Charging/Discharging Ratio 45
TUNER AGC
I
S23 Current Slope R
I
23+
Notes :
Supply Voltage 8 9 12.6 V
CC
Supply Current I17,VCC=9V 70 95 mA
CC
Input Sensitivity (RMS) -3dB Video atOutput 70 µV
Differential Input Resistance 2 kΩ
Differential Input Capacitance 2 pF
Max Input Signal +1dB Video atOutput 180 mV
Vision Carrier Capture -1.4 1.6 MHz
PC
Amplitude Top Sync to White 2 2.3 2.6 V
A3
Top Sync Level B/G 1.6 1.9 2.2 V
S3
Zero Carrier Level B/G 4.4 V
I
Internal Bias of EmitterFollower 3 5 mA
3
Intermodulation 1.07MHz Note 2 52 dB
White Noise Threshold Voltage 4.85 V
White Noise Insertion Level 3.6 V
WIL
Black Noise Threshold Voltage 1.3 V
BTH
Black Noise Insertion Level 2.5 V
BIL
Charging Current 550 950 1300 µA
Discharge Current 12 20 28 µA
Maximum Sinked Current 1.5 2 2.5 mA
23
Maximum Tuner Plus Sinked Current Note 3 40 mA
S
=
1.
20 log 10
N
2. Video carrier relative level = 0dB, Chroma subcarrier level= -3.2dB,Sound carrier relativelevel =-20dB. AGC voltage (Pin 22)
is adjustedto get 1V
3. Additional sinked current for large increasing steps of input signal when:
- Voltage Pin 22 > starting point defined Pin 24.
- Outputsignal (Pin 3) saturated(V
V
out black white
VN(mV
atBW = 5MHz
)
RMS
signalon output (Pin 3).
PP
< VBTH inBG mode).
3
synclevelatB/G,
RMS
= 38.9MHz,fSC=33.4MHz,
PC
RMS,fM
=5kΩ 100 170 230 µA/dB
24
=1kHz,AudioBW =20kHz,∆f=±50kHz,
RMS
RMS
PP
8223B-03.TBL
3/10
Page 4
STV8223B
ELECTRICAL CHARACTERISTICS
=25°C,VCC= 9V, IFinput =10mV
(T
amb
VideomodulationDSB,D = 90%at B/G, f
VideoBW =5MHz,Soundcarrierinput: 5.5MHz,10mV
(continued)
synclevelat B/G,
RMS
=38.9MHz, fSC= 33.4MHz,
PC
RMS,fM
=1kHz,AudioBW= 20kHz,∆f=±50kHz,
Volumeattenuation= 0dB,unlessotherwisespecified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
FM SOUND DEMODULATION
V
8S
R
AMR Amplitude Modulation Rejection Note 4 50 61 dB
SVR Supply Voltage Rejection Ratio Ripple signal : 100Hz, 0.5V
V
15
THD Total Harmonic Distortion 0.2 1 %
R
15
S/N Signal to Noise Ratio See Note 5,
VOLUME CONTROL
Range Control Range See Figure 22 72 77 dB
V
C
AUDIO SWITCH
R
16
CRtk Crosstalk 70 80 dB
En Output Noise Level(Pin 14) WeightedCCIR 468-4,V
EXTHD THD onExternal Signal(Pin 14) V
VIDEO SWITCH
V
DC1 2
V
S12
V
11
V
S11
GEX Gain from Ext.Input toOutput 5.5 6 6.5 dB
I
12
VBW Bandwidth V
G
MUTE (Pin 13)
V
TH13
CONTROL INPUT
Notes :
Input Sensitivity 150 µV
Limiter Input Resistance 600 Ω
8
DC Voltage (Pin8) 4.2 V
PP
28 33 dB
Detected AudioOutput Signal 0.85 1.1 1.4 V
Internal Deemphasis Resistor 600 750 900 Ω
55 60 dB
Weighted CCIR 468-4,
(quasi peak level) inputPin 8
Black Picture (sync only) Measurement between IF input
White Picture 46 50 dB
250kHz Square Wave 47 52 dB
(Pins19-20) andaudio output (Pin15)
SAW : K2955
BPF : SFE5.5MB
47 52 dB
Input Resistance 55 70 85 kΩ
(quasi peak level)
IN
=2V
, Attenuation = 0dB 0.1 0.3 %
RMS
13
= 0.5V
70 µV
Audio Reference Voltage (Pin 9) 4.5 V
DC Input Level No signal 1.6 1.9 2.2 V
Top Sync. Clamp Level 1.8 V
DC Output Level No signal 1.7 2 2.3 V
Top Sync. Clamp Level 1.5 V
Crosstalk 55 dB
Output Swing 4 5 V
Input Current V12=V
=1V
IN
Gain from Int.Input to Output -0.5 0 +0.5 dB
IN
= 1.5V 1 5 µA
DC12
PP
15 MHz
Threshold Voltage Pin13 0.2 0.3 0.4 V
Negative Modulation Video : External- Audio: External 7.2 V
Negative Modulation Video : Internal -Audio : Internal 1.8 V
(
)
mV
V
15
RMS
4. AMR = 20 log
=
20 log
V
S
5.
N
(mV
15
V
(mV
N
(dB) whereVAM =outputamplitude in AM forfM = 1kHz andm =30%
V
AM
)
RMS
(dB)
)
RMS
RMS
RMS
8223B -04.TBL
4/10
Page 5
INPUT/OUTPUT PIN CONFIGURATION
Figure1 : PIFPLL Filter
1
STV8223B
Figure 2 : AFC Output
2
8223B -03.EPS
Figure3 : CVBSOutput
3
Figure5 :
56
IFLC
2kΩ 2kΩ
Figure 4 : SwitchingInput INT/EXT
4
8223B-05.EPS
Figure 6 :
Audio HighPass Filter
7
8223B-04.EPS
8223B -06.EPS
8223B-07.EPS
8223B-08.EPS
5/10
Page 6
STV8223B
INPUT/OUTPUT PIN CONFIGURATION (continued)
Figure7 : 2ndIF SoundInput (Pin 8)
Audio and 2
nd
IF Decoupling(Pin 9)
Figure 8 : InternalVideo Input
8
Figure9 :
Figure11 :
Ω
600Ω
600
VideoSwitch Output
11
VolumeControl+ Mute
9
10
8223B-09.EPS
Figure 10 :
8223B-11.EPS
Figure 12 :
ExternalVideo Input
12
AudioSwitch Output
8223B-10.EPS
8223B-12.EPS
13
Figure13 : FMDemodulatedAudioOutput
750
Ω
15
6/10
14
8223B-13.EPS
Figure 14 : ExternalAudio Input
16
8223B-15.EPS
8223B-14.EPS
8223B-16.EPS
Page 7
INPUT/OUTPUT PIN CONFIGURATION (continued)
Figure15 : V
CC
STV8223B
Figure 16 : IFInput
Figure18 :
17
AGCCapacitor
22
15V
8223B -17.EPS
Figure 19 :
1kΩ
19
TunerAGC Output
23
1kΩ
20
8223B -18.EPS
Figure20 :
8223B-19.EPS
TunerAGC StartingPoint Adjustment
24
8223B-20.EPS
8223B-21.EPS
7/10
Page 8
STV8223B
Figure21 : AFCVoltage Pin2 vsIF Frequency
8
7
6
5
4
3
2
1
AFCVOLTAGE (PIN2) (V)
0
38.55 38.95 39.3538.75 39.15
IF FREQUENCY (MHz)
Figure23 :
TunerAGC Output CurrentvsV
CurrentConversion
with 100kΩ/100kΩ Bridge
IN
(R24 is externaladjustment Pin 24)
2
1.75
1.5
1.25
1
0.75
0.5
0.25
0
-1
10
TUNER AGC OUTPUT CURRENT (mA)
Figure 25 :
R24 = 1kΩ
R24 = 3kΩ
R24 = 5kΩ
11010
V (mV )
RMS
IN
2
Blackand White Noise Inverter
10
Figure 22 : VolumeControl Attenuationvs V
0
-10
-20
-30
-40
-50
-60
ATTENUATION(dB)
VOLUME CONTROL
-70
-80
1.0 2.0 3.0
V (V)
8223B-22.EPS
Figure24 :
Video Signalto Noise Ratio (Pin3)
13
as a functionof IFInputSignal
(Pins 19-20)Weighted CCIR-567
80
70
60
50
40
S/N (dB)
30
20
10
3
8223B -24.EPS
0
VIN(mV
RMS
13
4.0
)
5.0
8223B-23.EPS
1001010.10.01
8223B -25.EPS
8/10
4.85
4.2
3.6
2.5
1.9
1.3
V
(V)
3
White SpikeNoise Clamp
Top White
White NoiseLevel Insertion
Black NoiseLevel Insertion
Top Synchronization
Black SpikeNoise Clamp
t
8223B-26.EPS
Page 9
APPLICATIONDIAGRAM (B/G/D/K)
STV8223B
+9V
External
C9
Sound
Input
10µF
(From SCART)
C8
R11
L4
Sound
Output
(To SCART)
Demodulated
10µF
220Ω
3.3µH
Sound
Switched
C6
C21
Output
R32
4.7µF
C7
47µF
10kΩ
68nF
3.3kΩ
P2
10kΩ
C31
100nF
Volume control
SW1
Mute
1314
1617181920 1521222324
C20
100nF
STV8223B
External
C30
C26
C25
LC1
CVBS
Input
100nF
10µF
(From SCART)
R29
470nF
75Ω
C27
CVBS
470nF
+9V
C24
1nF
38.9MHz
C29
Ouput
10nF
R28
R24
4.7kΩ
Q3
4.7kΩ
R21
BFP
+9V
BC547
1.8kΩ
D2
CF1
5.5MHz
C28
Voltage
Switching
R10
SW4
STD
R26
R25
R20
1N4148
68pF
22Ω
3.9kΩ
2.7kΩ
1kΩ
BFP
6.5MHz
Q2
BC547
D1
CF2
CVBS
Output
R18
R12
2.2kΩ
TRAP FILTER
(5.5MHz - 6.5MHz)
R27
1N4148
(To SCART)
75Ω
R9
560Ω
L6
1.8kΩ
R22
CF3
8.2µH
150Ω
VIDEO SAW
BGDK
FILTER
IF1
C18
Tuner AGC
1µF
R14
C16
Output
C17
27kΩ
2.2µF
C15
R13
100nF
C33
1nF
10µF
R34
330Ω
DZ1
390Ω
BZX55C
10V
9V
123456789101112
10kΩ
P1
AGC
Delay
Tuner
R15
9V
Q4
BC337
R35
15Ω
6.8kΩ
12V
10nF
R17
C32
10nF
100kΩ
100kΩ
R16
AFC
Output
8223B-27.EPS
9/10
Page 10
STV8223B
PACKAGE MECHANICAL DATA
24 PINS - PLASTICSHRINK DIP
BeB1
E
E1
A2
A1
LA
Stand-off
c
D
e1
e2
E
13
F
12
SDIP24
e3
e2
.015
0,38
Gage Plane
Dimensions
24
1
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 5.08 0.20
A1 0.51 0.020
3.05 3.30 4.57 0.120 0.130 0.180
B 0.36 0.46 0.56 0.0142 0.0181 0.0220
B1 0.76 1.02 1.14 0.030 0.040 0.045
C 0.23 0.25 0.38 0.0090 0.0098 0.0150
D 22.61 22.86 23.11 0.890 0.90 0.910
E 7.62 8.64 0.30 0.340
E1 6.10 6.40 6.86 0.240 0.252 0270
e 1.778 0.070
e1 7.62 0.30
e2 10.92 0.430
e3 1.52 0.060
L 2.54 3.30 3.81 0.10 0.130 0.150
Informationfurnishedis believedto be accurateand reliable.However, SGS-THOMSON Microelectronics assumesno responsibility
for the consequences of use ofsuch informationnor forany infringementof patentsor other rights of third parties whichmay result
from its use. No licenceis granted by implication orotherwise underany patentor patent rightsof SGS-THOMSONMicroelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
informationpreviously supplied. SGS-THOMSON Microelectronics products arenotauthorized for useas criticalcomponents inlife
support devices or systemswithout express written approval of SGS-THOMSON Microelectronics.
PMSDIP24.EPS
SDIP24.TB L
10/10
1997 SGS-THOMSON Microelectronics- All Rights Reserved
Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under thePhilips
2
C Patent. Rights to use thesecomponents in a I2C system,is granted provided that the system conforms to
I
2
the I
C StandardSpecifications as defined by Philips.
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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