STV8224A MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES .. .. .. . PRELIMINARY DATA VIDEO PLL DEMODULATION SOUND PLL DEMODULATION POSITIVE AND NEGATIVE MODULATION AGC FOR BG AND L STANDARDS AUDIO SWITCH DC VOLUME CONTROL VIDEO SWITCH SHRINK24 (Plastic Package) DESCRIPTION The STV8224Ais a picture and 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. AM sound demodulation is performed with the STV8225 add-on. ORDER CODE : STV8224A PIN CONNECTIONS 1 24 TUNER AGC STARTING POINT ADJUSTMENT AFC OUTPUT 2 23 TUNER AGC OUTPUT CVBS OUTPUT 3 22 AGC CAPACITOR SWITCHING INPUT (STANDARD + INT/EXT) 4 21 AGC CAPACITOR (L STANDARD) IF LC 5 20 IF INPUT IF LC 6 19 IF INPUT AUDIO HIGH PASS FILTER 7 18 GROUND 2nd IF SOUND INPUT 8 17 V CC 2nd IF DECOUPLING + MUTE 9 16 EXTERNAL AUDIO INPUT INTERNAL VIDEO INPUT 10 15 FM DEMODULATED AUDIO OUTPUT VIDEO SWITCH OUTPUT 11 14 AUDIO SWITCH OUTPUT EXTERNAL VIDEO INPUT 12 13 VOLUME CONTROL + MUTE May 1995 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without no tice. 8224A-01.EPS PIF PLL FILTER 1/12 STV8224A BLOCK DIAGRAM EXT CVBS AFC OUTPUT 2 VCC 5 6 1 12 17 18 19 10 VID AMP IF INPUT 20 21 WHITE NOISE & SPOT INVERT 3 LOGIC INTERFACE 4 SFE 5.5 SFE 6.5 CVBS OUT Int/Ext AGC 22 TUNER AGC OUTPUT SWITCHED CVBS 11 6dB PIF PLL & AFC BG/L 23 TUNER AGC SIF PLL DC VOLUME LIMITER & MUTE 8 9 24 14 13 16 15 7 STV8224A EXT AUDIO 8224A-02.EPS SWITCHED AUDIO AUDIO OUT ABSOLUTE MAXIMUM RATINGS Value Unit Supply Voltage 13.5 V Vx Tuner AGC Voltage VCC V Tstg Storage Temperature Toper Operating Temperature -40, +150 o C 0, +70 o C THERMAL DATA Symbol Rth (j-a) 2/12 Parameter Junction-ambient Thermal Resistance Value Max. 75 Unit o C/W 8224A-01.TBL Parameter VS 8224A-02.TBL Symbol STV8224A ELECTRICAL CHARACTERISTICS (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 95% at L, 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 Parameter Test Conditions Min. Typ. Max. Unit 8 9 12.6 V I17, VCC = 9V 70 95 mA -3dB Video at Output 70 µVRMS SUPPLY VCC Supply Voltage ICC Supply Current IF AMPLIFIER V19-20 Input Sensitivity (RMS) R19-20 Differential Input Resistance 1.5 kΩ C19-20 Differential Input Capacitance 2 pF Gain Control Range 64 dB 110 mVRMS Gr Max Input Signal +1dB Video at Output SYNCHRONOUS VIDEO DEMODULATOR DFPC Vision Carrier Capture -1.4 1.6 MHz AFC S2 AFC Slope See Figure 21 µA/kHz 0.2 DEMODULATED VIDEO OUTPUT (Pin 3) VA3 Amplitude BG vs L Top Sync to White 2 2.3 2.6 VPP 10 % 1.6 1.9 2.2 V Amplitude Difference Top Sync Level B/G and L Zero Carrier Level B/G L BW Bandwidth -3dB Video Signal Dg Differential Gain 6 VS3 Dp 4.4 1.8 6 V V 7 MHz 8 % Degree Differential Phase 6 8 Vr3c Residual Carrier Signal (RMS Value) 1 10 mV Vr3h Residual 2nd Harmonic (RMS Value) 1 10 mV Internal Bias of Emitter Follower I3 S/N Signal to Noise Ratio Note 1 - Weighted CCIR-567 Intermodulation 1.07MHz Note 2 3 5 mA 53 58 dB 52 dB VWTH White Noise Threshold Voltage 4.85 V VWIL White Noise Insertion Level 3.6 V VBTH Black Noise Threshold Voltage 1.3 V VBIL Black Noise Insertion Level 2.5 V I22CBG Charging Current 550 950 1300 µA I22DBG Discharge Current 12 20 28 µA C/D Charging/Discharging Ratio 45 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). Notes : 1. S N = 20 log 10 3/12 8224A-03.TBL AGC CIRCUIT (BG MODE) STV8224A ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 95% at L, 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 Parameter Test Conditions Min. Typ. Max. Unit AGC CIRCUIT (L MODE) I22CL Charging Current I22DL Discharge Current I22CL+ Additional Charging Current L in case of missing, VITS Pulses and no White in Video Content Threshold Voltage Level for Additional Charging Current Refered to Pin 3 I22DL+ Note 3 2 Additional Discharging Current Threshold Voltage Level for Additional Discharging Current 28 Refered to Pin 3 3.3 4.5 mA 0.3 µA 5 µA 2.75 V 40 56 2.25 µA V TUNER AGC I23 Maximum Sinked Current S23 Current Slope R24 = 5kΩ I23+ Maximum Tuner Plus Sinked Current Note 6 1.5 2 2.5 mA 100 170 230 µA/dB 40 mA FM SOUND DEMODULATION V8S Input Sensitivity R8 Limiter Input Resistance AMR -3dB FM detected signal Amplitude Modulation Rejection Note 4 SVR Supply Voltage Rejection Ratio Ripple signal : 100Hz, 0.5VPP V15 Detected Audio Output Signal THD Total Harmonic Distortion R15 Internal Deemphasis Resistor S/N Signal to Noise Ratio 50 35 µV 1.2 kΩ 61 dB 12 17 0.85 1.1 1.4 VRMS dB 0.2 1 % 900 Ω 600 750 Note 5, Weighted CCIR 468-4 50 55 dB See Figure 22 72 77 dB 45 60 VOLUME CONTROL VC Range Control Range R16 CRtk EXTHD Input Resistance Crosstalk THD on External Signal 70 VIN = 2VRMS, Attenuation = 0dB Notes : 3. Triggered on white level V15 (mVRMS) 4. AMR = 20 log (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% VAM S V15 (mVRMS) 5. = 20 log (dB) VN (mVRMS) N 6. 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, V3 > V WTH in L mode). 4/12 75 80 0.1 kΩ dB 0.3 % 8224A-04.TBL AUDIO SWITCH STV8224A ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS sync level at B/G, Peak-white level at L, Video modulation DSB, D = 90% at B/G, D = 95% at L, 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 Parameter Test Conditions Min. Typ. Max. Unit No signal 1.6 1.9 2.2 V No signal 1.7 VIDEO SWITCH VDC 12 DC Input Level VS12 Top Sync. Clamp Level V11 DC Output Level VS11 Top Sync. Clamp Level GEX Gain from Ext. Input to Output 1.8 GIN 5.5 6 4 5 Input Current V12 = VDC12 = 1.5V 1 Bandwidth VIN = 1VPP 15 Gain from Int. Input to Output -0.5 V V 55 Output Swing I12 V 2.3 1.5 Crosstalk VBW 2 dB 6.5 dB V 5 µA MHz 0 +0.5 dB 2 2.3 V MUTE (Pin 9 or Pin 13) VTH9 V9 VTH13 Threshold Voltage Pin 9 DC Level when Mute Disabled 1.7 High impedance controling circuit Threshold Voltage Pin 13 2.8 0.2 0.3 V 0.4 V 1.8 V V 6.4 4.1 V V Negative Modulation Video : External - Audio : External Video : Internal - Audio : Internal 7.2 Positive Modulation Video : External - Audio : External Video : Internal - Audio : External 4.9 2.6 Threshold 3 Level linked to V CC 6.4 6.8 7.2 V Threshold 2 Level linked to V CC 4.1 4.5 4.9 V Threshold 1 Level linked to V CC 1.8 2.2 2.6 V 5/12 8224A-05.TBL CONTROL INPUT STV8224A INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output 2 Figure 3 : CVBS Output 8224A-04.EPS 8224A-03.EPS 1 Figure 4 : Switching Input Standard + INT/EXT 3 8224A-05.EPS 8224A-06.EPS 4 Figure 5 : IFLC Figure 6 : Audio High Pass Filter 2kΩ 5 2kΩ 6 6/12 8224A-08.EPS 8224A-07.EPS 7 STV8224A INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 8 : Internal Video Input 560 Ω 2CD IF Sound Input (Pin 8) 2CD IF Decoupling + Mute (Pin 9) 10 9 8224A-09.EPS 8 8224A-10.EPS 560 Ω Figure 7 : Figure 9 : Video Switch Output Figure 10 : External Video Input 11 Figure 11 : Volume Control + Mute 8224A-12.EPS 8224A-11.EPS 12 Figure 12 : Audio Switch Output 13 8224A-13.EPS 8224A-14.EPS 14 Figure 13 : FM Demodulated Audio Output Figure 14 : External Audio Input 16 1kΩ 8224A-16.EPS 8224A-15.EPS 15 7/12 STV8224A INPUT/OUTPUT PIN CONFIGURATION (continued) 17 800 Ω Figure 16 : IF Input 800 Ω Figure 15 : VCC 15V 20 Figure 17 : AGC Capacitor 8224A-18.EPS 8224A-17.EPS 19 Figure 18 : AGC Capacitor 21 Figure 19 : Tuner AGC Output 8224A-20.EPS 8224A-19.EPS 22 Figure 20 : Tuner AGC Starting Point Adjustment 23 8/12 8224A-22.EPS 8224A-21.EPS 24 STV8224A Figure 21 : AFC Voltage Pin 2 vs IF Frequency Figure 22 : Volume Control Attenuation vs V13 0 Current Conversion with 100kΩ/100kΩ Bridge -10 6 5 4 3 2 1 0 38.55 38.75 38.95 39.15 39.35 IF FREQUENCY (MHz) -20 -30 -40 -50 -60 -70 -80 1.0 2.0 3.0 4.0 5.0 V13 (V) 8224A-27.EPS VOLUME CONTROL ATTENUATION (dB) 7 8224A-26.EPS AFC VOLTAGE (PIN 2) (V) 8 2 1.75 1.5 R24 = 1k Ω R24 = 3k Ω R24 = 5k Ω 1.25 1 0.75 0.5 0.25 0 0.1 1 100 200 10 VIN (mV RMS ) 8224A-28.EPS TUNER AGC OUTPUT CURRENT (mA) Figure 23 : Tuner AGC Output Current vs VIN (R24 is external adjustment Pin 24) Figure 24 : Black and White Noise Inverter V3 (V) White Spike Noise Clamp 4.2 3.6 Top White White Noise Level Insertion 2.5 1.9 1.3 Black Noise Level Insertion Top Synchronization 8224A-29.EPS 4.85 Black Spike Noise Clamp t 9/12 10/12 8224A-25.EPS AFC Output 12V Tuner AGC Output R15 6.8kΩ 9V R16 100kΩ R17 100kΩ 390Ω R34 15Ω R35 C16 47µF C33 10µF Tuner AGC 9V Delay C17 10nF DZ1 BZX55C 10V Q4 BC337 R14 27kΩ IF1 R13 220Ω C15 220nF P1 10kΩ 1 24 VIDEO SAW FILTER BGDK C32 10nF C14 4.7nF 2 23 C18 1µF 3 22 150Ω LC1 68pF C28 18 100nF C20 47µF C21 6 BFP 6.5MHz CF2 BFP 5.5MHz CF1 D2 C25 1µF 1N4148 D1 1N4148 7 STV8224A 19 38.9MHz 5 20 C29 10nF R22 Switching Voltage 4 21 C19 47nF L4 3.3µH 8 17 R25 2.7kΩ 1.8kΩ 10 15 C26 100nF R24 4.7kΩ R27 R20 1kΩ 1.8kΩ R21 C24 1nF 9 16 SW4 STD R28 4.7kΩ 12 13 8.2µH CF3 SW1 C27 470nF Mute TRAP FILTER (5.5MHz - 6.5MHz) L6 R26 3.9kΩ Q3 BC547 +9V 11 14 C7 68nF R12 2.2kΩ R32 10kΩ 10µF C8 R9 560Ω BC547 Q2 R29 75Ω 75Ω R18 R10 22Ω +9V 470nF C30 C31 100nF Volume control 4.7µF C6 220Ω R11 10µF C9 CVBS Output (To SCART) CVBS Ouput External CVBS Input (From SCART) P2 10kΩ +9V Switched Sound Output Demodulated Sound Output (To SCART) External Sound Input (From SCART) STV8224A APPLICATION DIAGRAM (B/G/D/K) STV8224A R15 6.8kΩ 8224A-24.EPS AFC Output 12V Tuner AGC Output 9V R16 100kΩ R17 100kΩ 390Ω R34 15Ω R35 C16 47µF 9V C33 10µF DZ1 BZX55C 10V Q4 BC337 R14 27kΩ Switching Voltage R13 220Ω C15 220nF Tuner AGC Delay P1 10kΩ 1 24 2 23 C14 4.7nF C32 10nF VIDEO SAW FILTER BGDKL IF1 C17 10nF SOUND SAW FILTER L STD IF2 C18 1µF 3 22 4 21 R22 150Ω LC1 6 19 68pF C28 C20 47µF C21 17 BFP 6.5MHz CF2 BFP 5.5MHz CF1 D2 C25 1µF 1N4148 D1 1N4148 7 8 STV8224A 18 R25 2.7kΩ 1.8kΩ 10 15 5 C26 100nF R24 4.7kΩ R27 R20 1kΩ 1.8kΩ R21 C24 1nF 9 16 Level Switch 4 6 8 C22 10µF SW4 STD R28 4.7kΩ 12 13 7 Mute 8.2µH CF3 TRAP FILTER (5.5MHz - 6.5MHz) L6 R26 3.9kΩ Q3 BC547 +9V 11 14 C7 68nF C23 10µF STV8225 IC1 3 9 SW1 C27 470nF R12 2.2kΩ R9 560Ω BC547 Q2 R29 75Ω 75Ω R18 R10 22Ω +9V 470nF C30 C31 100nF CVBS Output (to SCART) CVBS Ouput External CVBS Input (From SCART) P2 10kΩ +9V Switched Sound Output Sound Output (To SCART) External Sound Input (From SCART) R32 10kΩ Volume Control 4.7µF C6 10µF 220Ω 100nF 10 C8 R11 C12 11 10µF C9 47µF C11 12 C10 22µF 100nF 2 1 C13 10µF 13 14 38.9MHz 5 IC2 20 C29 10nF C19 47nF 3.3µH L4 L7 3.3µH STV8224A APPLICATION DIAGRAM (B/G/D/K, L) STV8224A - STV8225 11/12 STV8224A PMSDIP24.WMF PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP A a1 b b1 b2 b3 D E e e3 e4 F i L Min. Millimeters Typ. 3.3 0.51 0.35 0.2 0.75 0.75 Max. Min. 0.59 0.36 1.42 0.020 0.014 0.008 0.030 0.030 23.11 9.73 7.95 Inches Typ. 0.130 0.023 0.014 0.056 0.910 0.383 0.313 1.778 19.558 7.62 0.070 0.770 0.300 6.86 5.08 2.54 Max. 0270 0.200 0.100 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. 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. 12/12 SDIP24.TBL Dimensions