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WITH AUDIO AND VIDEO SWITCHES
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STV8223B
MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES
. . . . . . .
VIDEO PLL DEMODULATION SOUND PLL DEMODULATION NEGATIVE MODULATION AGC FOR NEGATIVE MODULATION AUDIO SWITCH DC VOLUME CONTROL VIDEO SWITCH
SHRINK24 (Plastic Package)
DESCRIPTION The STV8223B is a pictureand sound IF processor for multistandard application with very few external components and adjustments. It provides the audio and video switches for one SCART plug application. PIN CONNECTIONS
PIF PLL FILTER AFC OUTPUT CVBS OUTPUT SWITCHING INPUT (INT/EXT) IF LC IF LC AUDIO HIGH PASS FILTER 2nd IF SOUND INPUT AUDIO AND 2nd IF DECOUPLING INTERNAL VIDEO INPUT VIDEO SWITCH OUTPUT EXTERNAL VIDEO INPUT 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
ORDER CODE : STV8223B
TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT AGC CAPACITOR NOT TO BE CONNECTED IF INPUT IF INPUT GROUND VCC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT VOLUME CONTROL + MUTE
8223B-01.EPS
January 1997
1/10
STV8223B
BLOCK DIAGRAM
EXT CVBS AFC OUTPUT
V CC 5 6 1 12
6dB
2
17
18 11 10 SWITCHED CVBS
PIF PLL & AFC
19 IF INPUT 20
VID AMP
WHITE NOISE & SPOT INVERT
3
SFE 5.5
SFE 6.5
CVBS OUT
22 TUNER AGC OUTPUT
AGC
Int/Ext
LOGIC INTERFACE
4
23 TUNER AGC 24 AUDIO Vref MUTE 14 13 16 15 7 9 DC VOLUME SIF PLL LIMITER 8
STV8223B
SWITCHED AUDIO
EXT AUDIO
AUDIO OUT
ABSOLUTE MAXIMUM RATINGS
Symbol VS Vx Tstg Toper Supply Voltage Tuner AGC Voltage Storage Temperature Operating Temperature Parameter Value 13.5 VCC -40, +150 0, +70 Unit V
o o
C C
Symbol Rth (j-a)
Parameter Junction-ambient Thermal Resistance Max.
Value 75
Unit
o
C/W
2/10
8223B-02.TBL
THERMAL DATA
8223B-01.TBL
V
8223B-02.EPS
STV8223B
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 SUPPLY VCC ICC V19-20 R 19-20 C 19-20 Gr Supply Voltage Supply Current Input Sensitivity (RMS) Differential Input Resistance Differential Input Capacitance Gain Control Range Max Input Signal Vision Carrier Capture AFC Slope 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 Charging Current Discharge Current Charging/Discharging Ratio Maximum Sinked Current Current Slope Maximum Tuner Plus Sinked Current
S
Parameter
Test Conditions
Min. 8
Typ. 9 70 70 2 2 68 180
Max. 12.6 95
Unit V mA µVRMS k pF dB mVRMS
I17, VCC = 9V -3dB Video at Output
IF AMPLIFIER
+1dB Video at Output -1.4 See Figure 21 Top Sync to White B/G B/G -3dB Video Signal 2 1.6 7
SYNCHRONOUS VIDEO DEMODULATOR DFPC AFC S2 VA3 BG vs L VS3 BW Dg Dp Vr3c Vr3h I3 S/N VWTH VWIL VBTH VBIL I22CBG I22DBG C/D I23 S23 I23+
Notes : 1.
1.6 0.2 2.3 1.9 4.4 9 6 3 1 1 5 61 52 4.85 3.6 1.3 2.5 950 20 45 2 170 40 2.6 10 2.2
MHz µA/kHz VPP % V V MHz % Degree mV mV mA dB dB V V V V µA µA
8223B-03.TBL
DEMODULATED VIDEO OUTPUT (Pin 3)
8 6 10 10
Note 1 - Weighted CCIR-567 Note 2
3 56
AGC CIRCUIT 550 12 1300 28
TUNER AGC R24 = 5k Note 3 1.5 100 2.5 230 mA µA/dB mA
Vout black white at BW = 5MHz VN (mVRMS) 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 (V 3 < V BTH in BG mode).
N
= 20 log 10
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STV8223B
ELECTRICAL CHARACTERISTICS (continued) (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 V 8S R8 AMR SVR V15 THD R 15 S/N Parameter Input Sensitivity Limiter Input Resistance DC Voltage (Pin 8) Amplitude Modulation Rejection Supply Voltage Rejection Ratio Detected Audio Output Signal Total Harmonic Distortion Internal Deemphasis Resistor Signal to Noise Ratio Test Conditions Min. Typ. Max. 150 600 4.2 61 33 1.1 0.2 750 60 Unit µVRMS V dB dB VRMS % dB FM SOUND DEMODULATION
Note 4 Ripple signal : 100Hz, 0.5VPP
50 28 0.85 600 55
1.4 1 900
Black Picture (sync only) White Picture 250kHz Square Wave VOLUME CONTROL VC Range R 16 CRtk En EXTHD Control Range Input Resistance Crosstalk Output Noise Level (Pin 14) THD on External Signal (Pin 14) Audio Reference Voltage (Pin 9) DC Input Level Top Sync. Clamp Level DC Output Level Top Sync. Clamp Level Crosstalk Gain from Ext. Input to Output Output Swing Input Current Bandwidth Gain from Int. Input to Output Threshold Voltage Pin 13 Negative Modulation Negative Modulation
Notes : 4. AMR = 20 log
See Note 5, Weighted CCIR 468-4, (quasi peak level) input Pin 8 Measurement between IF input (Pins 19-20) and audio output (Pin 15) SAW : K2955 BPF : SFE5.5MB
47 46 47
52 50 52
dB dB dB
See Figure 22
72 55 70
77 70 80 70 0.1 4.5 85
dB k dB µV % V V V V V dB dB V µA MHz dB V V V
8223B-04.TBL
AUDIO SWITCH
Weighted CCIR 468-4, V13 = 0.5V (quasi peak level) VIN = 2VRMS, Attenuation = 0dB
0.3
VIDEO SWITCH VDC 12 VS12 V11 VS11 GEX I12 VBW GIN VTH13 No signal No signal 1.6 1.7 1.9 1.8 2 1.5 55 6 5 1 15 0 0.3 2.2 2.3
5.5 4 V12 = VDC12 = 1.5V VIN = 1VPP -0.5 0.2 Video : External - Audio : External Video : Internal - Audio : Internal 7.2
6.5 5 +0.5 0.4
MUTE (Pin 13) CONTROL INPUT 1.8
V15 (mVRMS) (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% VAM V15 (mV ) S RMS = 20 log 5. (dB) VN (mVRMS) N
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STV8223B
INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output
2
1
8223B-03.EPS
Figure 3 : CVBS Output
Figure 4 : Switching Input INT/EXT
3
4
Figure 5 : IFLC
8223B-05.EPS
Figure 6 : Audio High Pass Filter
2k
2k
5
6
7
8223B-07.EPS
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8223B-08.EPS
8223B-06.EPS
8223B-04.EPS
STV8223B
INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 7 : 2nd IF Sound Input (Pin 8) Audio and 2nd IF Decoupling (Pin 9) Figure 8 : Internal Video Input
600
600
8
9
10
Figure 9 : Video Switch Output
8223B-09.EPS
Figure 10 : External Video Input
11
12
8223B-11.EPS
Figure 11 : Volume Control + Mute
Figure 12 : Audio Switch Output
13
14
8223B-14.EPS 8223B-13.EPS
Figure 13 : FM Demodulated Audio Output
Figure 14 : External Audio Input
750 15
8223B-15.EPS
16
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8223B-16.EPS
8223B-12.EPS
8223B-10.EPS
STV8223B
INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 15 : VCC Figure 16 : IF Input
1k
15V
19
1k
17
20
8223B-17.EPS
Figure 18 : AGC Capacitor
Figure 19 : Tuner AGC Output
23
22
8223B-19.EPS 8223B-20.EPS 8223B-21.EPS
Figure 20 : Tuner AGC Starting Point Adjustment
24
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8223B-18.EPS
STV8223B
Figure 21 : AFC Voltage Pin 2 vs IF Frequency
8 AFC VOLTAGE (PIN 2) (V) VOLUME CONTROL ATTENUATION (dB) 7 6 5 4 3 2 1
8223B-22.EPS
Figure 22 : Volume Control Attenuation vs V13
0 -10 -20 -30 -40 -50 -60 -70 1.0 2.0 3.0 V13 (V) 4.0 5.0
8223B-23.EPS 8223B-26.EPS 8223B-25.EPS
Current Conversion with 100k/100k Bridge
0 38.55
-80
38.75 38.95 39.15 IF FREQUENCY (MHz)
39.35
Figure 23 : Tuner AGC Output Current vs VIN (R24 is external adjustment Pin 24)
TUNER AGC OUTPUT CURRENT (mA) 2 1.75 1.5 1.25 1 0.75 0.5 0.25
8223B-24.EPS
Figure 24 : Video Signal to Noise Ratio (Pin 3) as a function of IF Input Signal (Pins 19-20) Weighted CCIR-567
80 70 60 S/N (dB) 50 40 30 20 10
R24 = 1k R24 = 3k R24 = 5k
0 10-1 1 VIN 10 (mV RMS ) 102 103
0 0.01
0.1
1 VIN (mVRMS)
10
100
Figure 25 : Black and White Noise Inverter
V3 (V) 4.85 4.2 3.6 2.5 1.9 1.3 White Spike Noise Clamp Top White White Noise Level Insertion Black Noise Level Insertion Top Synchronization Black Spike Noise Clamp t
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C9 10µF L4 R11 220 10µF C21 47µF C20 C18 1µF 100nF
22 21 20 19 18 17 16 15 14 13 24 23
External Sound Input (From SCART)
C8
3.3µH C6 C7 68nF 4.7µF
IF1
VIDEO SAW FILTER BGDK R32 10k
Demodulated Sound Output (To SCART) Switched Sound Output 3.3k +9V
APPLICATION DIAGRAM (B/G/D/K)
Tuner AGC Output
Volume control Mute C31 100nF SW1
C16 2.2µF P1 10k
R14 27k
P2 10k
R15 6.8k
C17 10nF
STV8223B
1 2 3 4 5 6 7 8 9 10 11 12
12V LC1 C25 10µF C26 100nF
R35
Q4 BC337 1nF C15 100nF R13 330 38.9MHz C29 10nF R24 4.7k C24 1nF +9V
Tuner AGC 9V Delay
15
C30 470nF
R34
C33 10µF
390
R29 75 C27 470nF
External CVBS Input (From SCART)
9V
DZ1 BZX55C 10V
CVBS Ouput R28 4.7k Q3 BC547 +9V SW4 STD
R17 100k Switching Voltage C28 1.8k 68pF 1N4148 D2 BFP 5.5MHz CF1 R21
AFC Output C32 10nF R20 1k
R16 100k
R25 2.7k
R26 3.9k
R10 22 BC547
BFP 6.5MHz CF2 D1 1N4148 R22 150
Q2 R27 1.8k TRAP FILTER (5.5MHz - 6.5MHz) L6 8.2µH CF3 R12 2.2k R9 560 R18 75 CVBS Output (To SCART)
STV8223B
9/10
8223B-27.EPS
STV8223B
PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP
E E1
A1
A2
Stand-o ff B B1 e e1 e2
L c D E 24 13 F
.015 0,38 Gage Plane
A
1
12 e3
SDIP24
e2
Dimensions A A1 B B1 C D E E1 e e1 e2 e3 L
Min. 0.51 3.05 0.36 0.76 0.23 22.61 7.62 6.10
Millimeters Typ.
Max. 5.08 4.57 0.56 1.14 0.38 23.11 8.64 6.86
Min. 0.020 0.120 0.0142 0.030 0.0090 0.890 0.30 0.240
Inches Typ.
Max. 0.20 0.180 0.0220 0.045 0.0150 0.910 0.340 0270
3.30 0.46 1.02 0.25 22.86 6.40 1.778 7.62
0.130 0.0181 0.040 0.0098 0.90 0.252 0.070 0.30
2.54
3.30
0.10
0.130
Information furni shed is believed to be accurate and reliable. However, SGS-THOMSON Micr oelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise und erany patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This pu blication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1997 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I 2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
10/10
SDIP24.TBL
10.92 1.52 3.81
0.430 0.060 0.150
PMSDIP24.EPS