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| STV8223A MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES . . . . . . . PRELIMINARY DATA VIDEO PLL DEMODULATION SOUND PLL DEMODULATION NEGATIVE MODULATION AGC FOR BG STANDARDS AUDIO SWITCH DC VOLUME CONTROL VIDEO SWITCH SHRINK24 (Plastic Package) DESCRIPTION The STV8223Ais a picture and sound IF processor for negative modulation application with very few external components and adjustments. It provides the audio and video switches for one SCART plug application. PIN CONNECTIONS ORDER CODE : STV8223A PIF PLL FILTER AFC OUTPUT CVBS OUTPUT SWITCHING INPUT (STANDARD + INT/EXT) IF LC IF LC AUDIO HIGH PASS FILTER 2nd IF SOUND INPUT 2nd IF DECOUPLING + MUTE 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 TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT AGC CAPACITOR NOT TO BE CONNECTED IF INPUT IF INPUT GROUND V CC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT VOLUME CONTROL + MUTE 8223A-01.EPS May 1995 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice. 1/10 STV8223A BLOCK DIAGRAM EXT CVBS AFC OUTPUT VCC 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 Int/Ext 22 TUNER AGC OUTPUT AGC BG 23 TUNER AGC 24 14 13 16 15 7 DC VOLUME SIF PLL LIMITER & MUTE 8 9 LOGIC INTERFACE 4 STV8223A 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 8223A-02.TBL THERMAL DATA 8223A-01.TBL V 8223A-02.EPS SWITCHED AUDIO STV8223A ELECTRICAL CHARACTERISTICS (Tamb = 25C, 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 R19-20 C19-20 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 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 1.5 2 64 110 Max. 12.6 95 Unit V mA VRMS k pF dB mVRMS I17, VCC = 9V -3dB Video at Output IF AMPLIFIER +1dB Video at Output -1.4 See Figure 20 Top Sync to White B/G B/G -3dB Video Signal 2 1.6 6 SYNCHRONOUS VIDEO DEMODULATOR DFPC AFC S2 VA3 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 7 6 6 1 1 5 58 52 4.85 3.6 1.3 2.5 950 20 45 2 170 40 2.6 2.2 MHz A/kHz VPP V V MHz % Degree mV mV mA dB dB V V V V A A DEMODULATED VIDEO OUTPUT (Pin 3) 8 8 10 10 Note 1 - Weighted CCIR-567 Note 2 3 53 AGC CIRCUIT (BG MODE) 550 12 1300 28 TUNER AGC R24 = 5k Note 3 8223A-03.TBL 1.5 100 2.5 230 mA A/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 (V3 < V BTH in BG mode). N = 20 log 10 3/10 STV8223A ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25C, 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 V8S R8 AMR SVR V15 THD R 15 S/N VC Range R 16 CRtk EXTHD VDC 12 VS12 V11 VS11 GEX I12 VBW GIN VTH9 V9 VTH13 Parameter Input Sensitivity Limiter Input Resistance Amplitude Modulation Rejection Supply Voltage Rejection Ratio Detected Audio Output Signal Total Harmonic Distortion Internal Deemphasis Resistor Signal to Noise Ratio Control Range Input Resistance Crosstalk THD on External Signal DC Input Level Top Sync. Clamp Level DC Output Level Top Sync. Clamp Level Crosstalk Gain from External Input to Output Output Swing Input Current Bandwidth Gain from Internal Input to Output Threshold Voltage Pin 9 DC Level when Mute Disabled Threshold Voltage Pin 13 Negative Modulation Positive Modulation Threshold 3 Threshold 2 Threshold 1 Notes : 4. AMR = 20 log Test Conditions -3dB FM detected signal Note 4 Ripple signal : 100Hz, 0.5VPP Min. Typ. 35 1.2 61 17 1.1 0.2 750 55 77 60 80 0.1 1.9 1.8 2 1.5 55 6 5 1 15 0 2 2.8 0.3 Ma. Unit V k dB dB VRMS % dB dB FM SOUND DEMODULATION 50 12 0.85 600 50 72 45 70 1.4 1 900 Note 5, Weighted CCIR 468-4 See Figure 21 VOLUME CONTROL AUDIO SWITCH 75 0.3 2.2 2.3 k dB % V V V V dB dB V A MHz dB V V V V V V V V V V VIN = 2VRMS, Attenuation = 0dB No signal No signal 1.6 1.7 VIDEO SWITCH 5.5 4 V12 = VDC12 = 1.5V VIN = 1VPP -0.5 1.7 High impedance controling circuit 0.2 Video : External - Audio : External Video : Internal - Audio : Internal Video : External - Audio : External Video : Internal - Audio : External Level linked to V CC Level linked to V CC Level linked to V CC 7.2 4.9 2.6 6.4 4.1 1.8 6.5 5 +0.5 2.3 0.4 MUTE (Pin 9 or Pin 13) CONTROL INPUT 1.8 6.4 4.1 7.2 4.9 2.6 V15 (mVRMS) (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% VAM V15 (mVRMS) S 5. (dB) = 20 log VN (mVRMS) N 4/10 8223A-04.TBL 6.8 4.5 2.2 STV8223A INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output 2 1 8223A-03.EPS Figure 3 : CVBS Output Figure 4 : Switching Input Standard + INT/EXT 3 4 Figure 5 : IFLC 8223A-05.EPS Figure 6 : Audio High Pass Filter 2k 2k 5 6 7 8223A-07.EPS 5/10 8223A-08.EPS 8223A-06.EPS 8223A-04.EPS STV8223A INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 7 : 2CD IF Sound Input (Pin 8) 2CD IF Decoupling + Mute (Pin 9) Figure 8 : Internal Video Input 560 560 8 9 10 Figure 9 : Video Switch Output 8223A-09.EPS Figure 10 : External Video Input 11 12 8223A-11.EPS Figure 11 : Volume Control + Mute Figure 12 : Audio Switch Output 13 14 8223A-14.EPS Figure 13 : FM Demodulated Audio Output 8223A-13.EPS Figure 14 : External Audio Input 1k 15 8223A-15.EPS 16 6/10 8223A-16.EPS 8223A-12.EPS 8223A-10.EPS STV8223A INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 15 : VCC Figure 16 : IF Input 800 17 15V 19 800 20 8223A-17.EPS Figure 17 : AGC Capacitor Figure 18 : Tuner AGC Output 23 22 8223A-20.EPS 8223A-21.EPS 8223A-22.EPS Figure 19 : Tuner AGC Starting Point Adjustment 24 7/10 8223A-18.EPS STV8223A Figure 20 : AFC Voltage Pin 2 vs IF Frequency 8 AFC VOLTAGE (PIN 2) (V) 7 6 5 4 3 2 1 8223A-23.EPS Figure 21 : Volume Control Attenuation vs V13 0 VOLUME CONTROL ATTENUATION (dB) -10 -20 -30 -40 -50 -60 -70 1.0 2.0 3.0 V13 (V) 4.0 5.0 8223A-24.EPS 8223A-26.EPS Current Conversion with 100k/100k Bridge 0 38.55 -80 38.75 38.95 39.15 39.35 IF FREQUENCY (MHz) Figure 22 : 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 0.1 1 10 VIN (mV RMS ) 100 200 8223A-25.EPS R24 = 1k R24 = 3k R24 = 5k 0 Figure 23 : 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 8/10 C9 10F L4 R11 220 10F C21 47F C20 C18 1F 100nF 22 21 20 19 18 17 16 15 14 13 24 23 External Sound Input (From SCART) C8 3.3H C6 C7 68nF 4.7F APPLICATION DIAGRAM Demodulated Sound Output (To SCART) Switched Sound Output R32 10k +9V IF1 VIDEO SAW FILTER BGDK Tuner AGC Output Volume control Mute C31 100nF SW1 C16 47F P1 10k R14 27k P2 10k R15 6.8k C17 10nF STV8223A 1 2 3 4 5 6 7 8 9 10 11 12 12V LC1 C15 220nF C25 1F 38.9MHz C29 10nF R24 4.7k C24 1nF +9V R13 220 C14 4.7nF C26 100nF R35 Q4 BC337 Tuner AGC 9V Delay 15 R34 C33 10F C30 470nF 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 C32 10nF Switching Voltage C28 D2 1.8k 1N4148 68pF BFP 5.5MHz CF1 R21 AFC Output R16 100k R20 1k 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 8.2H CF3 R12 2.2k R9 560 R18 75 CVBS Output (To SCART) STV8223A 9/10 8223A-27.EPS STV8223A PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP Dimensions A a1 b b1 b2 b3 D E e e3 e4 F i L Min. 0.51 0.35 0.2 0.75 0.75 7.95 Millimeters Typ. 3.3 Max. Min. 0.020 0.014 0.008 0.030 0.030 0.313 Inches Typ. 0.130 Max. 0.59 0.36 1.42 23.11 9.73 1.778 19.558 7.62 6.86 5.08 0.023 0.014 0.056 0.910 0.383 0.070 0.770 0.300 SDIP24.TBL 0270 0.200 0.100 2.54 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without noti ce. This publication 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. (c) 1995 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C 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 confo rms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - 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 PMSDIP24.WMF |
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