STV8224B MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES .. .. .. . 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 STV8224B 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. AM sound demodulation is performed with the STV8225 add-on. ORDER CODE : STV8224B 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 AUDIO AND 2nd IF DECOUPLING 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 January 1997 8224B-01.EPS PIF PLL FILTER 1/12 STV8224B BLOCK DIAGRAM EXT CVBS AFC OUTPUT 2 V CC 5 6 1 12 17 18 11 6dB PIF PLL & AFC 19 10 VID AMP IF INPUT 20 21 WHITE NOISE & SPOT INVERT 3 LOGIC INTERFACE 4 LIMITER 8 AUDIO Vref 9 SFE 5.5 SFE 6.5 CVBS OUT Int/Ext AGC 22 TUNER AGC OUTPUT SWITCHED CVBS BG/L 23 TUNER AGC DC VOLUME SIF PLL 24 MUTE SWITCHED AUDIO 16 15 EXT AUDIO 7 STV8224B 8224B-02.EPS 14 13 AUDIO OUT ABSOLUTE MAXIMUM RATINGS Value Unit VS Supply Voltage 13.5 V Vx Tuner AGC Voltage VCC V Tstg Storage Temperature Toper Operating Temperature -40, +150 o 0, +70 o C C THERMAL DATA Symbol Rth (j-a) 2/12 Parameter Junction-ambient Thermal Resistance Value Max. 75 Unit o C/W 8224B-01.TBL Parameter 8224B-02.TBL Symbol STV8224B 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 SUPPLY VCC Supply Voltage ICC Supply Current 9 12.6 V I17, VCC = 9V 8 70 95 mA -3dB Video at Output 70 µVRMS IF AMPLIFIER V19-20 Input Sensitivity (RMS) R 19-20 Differential Input Resistance 2 kΩ C 19-20 Differential Input Capacitance 2 pF Gr Gain Control Range Max Input Signal +1dB Video at Output 68 dB 180 mVRMS SYNCHRONOUS VIDEO DEMODULATOR Vision Carrier Capture DFPC -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 Amplitude Difference % 2.2 V B/G and L Zero Carrier Level B/G L BW Bandwidth -3dB Video Signal Dg Differential Gain 6 8 % Dp Differential Phase 3 6 Degree Residual Carrier Signal (RMS Value) 1 10 mV 1 10 Vr3c Vr3h 7 Residual 2nd Harmonic (RMS Value) Internal Bias of Emitter Follower I3 S/N Signal to Noise Ratio Note 1 - Weighted CCIR-567 Intermodulation 1.07MHz Note 2 VWTH White Noise Threshold Voltage 1.9 VPP 10 Top Sync Level VS3 1.6 2.6 4.4 1.8 V V 9 MHz mV 3 5 mA 56 61 dB 52 dB 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 Notes : 1. = 20 log 10 at BW = 5MHz N 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). S 3/12 8224B-03.TBL AGC CIRCUIT (BG MODE) STV8224B 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 I22 CL+ 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 I22 DL+ 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 4 1.5 2 2.5 mA 100 170 230 µA/dB 40 mA V 8S Input Sensitivity 150 µVRMS R8 Limiter Input Resistance 600 Ω 4.2 V AMR Amplitude Modulation Rejection DC Voltage (Pin 8) Note 5 50 61 dB SVR Supply Voltage Rejection Ratio Ripple signal : 100Hz, 0.5VPP 28 33 dB 0.85 1.1 1.4 VRMS 0.2 1 % 600 750 900 Ω V15 Detected Audio Output Signal THD Total Harmonic Distortion R 15 Internal Deemphasis Resistor S/N Signal to Noise Ratio See Note 6, Weighted CCIR 468-4, (quasi peak level) input Pin 8 55 60 dB Black Picture (sync only) Measurement between IF input (Pins 19-20) and audio output (Pin 15) SAW : K2955 BPF : SFE5.5MB 47 52 dB 46 50 dB 47 52 dB See Figure 22 72 77 dB White Picture 250kHz Square Wave VOLUME CONTROL VC Range Control Range Notes : 3. Triggered on white level 4. 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, V3 > V WTH in L mode). V15 (mVRMS) 5. AMR = 20 log (dB) where VAM = output amplitude in AM for fM = 1kHz and m = 30% VAM V15 (mVRMS) S 6. = 20 log (dB) VN (mVRMS) N 4/12 8224B-04.TBL FM SOUND DEMODULATION STV8224B ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25°C, VCC = 9V, IF input = 10mVRMS synclevel 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 Input Resistance 55 70 85 kΩ Crosstalk 70 80 dB 70 µV AUDIO SWITCH R 16 CRtk En EXTHD Output Noise Level (Pin 14) Weighted CCIR 468-4, V13 = 0.5V (quasi peak level) THD on External Signal (Pin 14) VIN = 2VRMS, Attenuation = 0dB 0.1 Audio Reference Voltage (Pin 9) 0.3 4.5 % V VIDEO SWITCH VDC 12 DC Input Level No signal 1.6 1.9 2.2 Top Sync. Clamp Level V11 DC Output Level VS11 Top Sync. Clamp Level 1.5 V Crosstalk 55 dB GEX 1.8 V VS12 No signal Gain from Ext. Input to Output 5.5 Output Swing I12 VBW GIN 1.7 4 Input Current V12 = VDC12 = 1.5V Bandwidth VIN = 1VPP 2 6 V 2.3 6.5 dB 5 µA 5 1 V V 15 MHz Gain from Int. Input to Output -0.5 0 +0.5 dB Threshold Voltage Pin 13 0.2 0.3 0.4 V MUTE (Pin 13) VTH13 CONTROL INPUT Video : External - Audio : External 7.2 Threshold 3 Level linked to VCC 6.4 Positive Modulation Video : External - Audio : External 4.9 Threshold 2 Level linked to VCC 4.1 Positive Modulation Video : Internal - Audio : External 2.6 Threshold 1 Level linked to VCC 1.8 Negative Modulation Video : Internal - Audio : Internal V 6.8 7.2 V 6.4 V 4.5 4.9 V 4.1 V 2.2 2.6 V 1.8 V 5/12 8224B-05.TBL Negative Modulation STV8224B INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output 2 Figure 3 : CVBS Output 8224B-04.EPS 8224B-03.EPS 1 Figure 4 : Switching Input Standard + INT/EXT 3 8224B-05.EPS 8224B-06.EPS 4 Figure 5 : IFLC Figure 6 : Audio High Pass Filter 2kΩ 5 2kΩ 6 6/12 8224B-08.EPS 8224B-07.EPS 7 STV8224B INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 8 : Internal Video Input 9 8224B-10.EPS 10 8224B-09.EPS 600Ω 8 2nd IF Sound Input (Pin 8) Audio and 2nd IF Decoupling (Pin 9) 600Ω Figure 7 : Figure 9 : Video Switch Output Figure 10 : External Video Input 11 Figure 11 : Volume Control + Mute 8224B-12.EPS 8224B-11.EPS 12 Figure 12 : Audio Switch Output 13 8224B-13.EPS 8224B-14.EPS 14 Figure 13 : FM Demodulated Audio Output Figure 14 : External Audio Input 16 750Ω 8224B-16.EPS 8224B-15.EPS 15 7/12 STV8224B INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 16 : IF Input 1kΩ 17 15V Figure 17 : AGC Capacitor 8224B-18.EPS 20 8224B-17.EPS 19 1kΩ Figure 15 : VCC Figure 18 : AGC Capacitor 21 Figure 19 : Tuner AGC Output 8224B-20.EPS 8224B-19.EPS 22 Figure 20 : Tuner AGC Starting Point Adjustment 23 8/12 8224B-22.EPS 8224B-21.EPS 24 STV8224B Figure 21 : AFC Voltage Pin 2 vs IF Frequency Figure 22 : Volume Control Attenuation vs V13 0 6 5 4 3 2 1 0 38.55 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) -20 -30 -40 -50 -60 -70 -80 1.0 2.0 3.0 4.0 5.0 V13 (V) Figure 24 : Video Signal to Noise Ratio (Pin 3) as a function of IF Input Signal (Pins 19-20) Weighted CCIR-567 80 R24 = 1kΩ R24 = 3kΩ R24 = 5kΩ 1.75 60 S/N (dB) 1.5 70 1.25 1 0.75 50 40 30 0.5 20 0.25 10 0 1 10-1 VIN 10 (mV RMS ) 102 103 0 0.01 0.1 1 10 100 VIN (mVRMS) 8224B-30.EPS 2 8224B-25.EPS TUNER AGC OUTPUT CURRENT (mA) -10 8224B-24.EPS 7 VOLUME CONTROL ATTENUATION (dB) Current Conversion with 100kΩ/100kΩ Bridge 8224B-23.EPS AFC VOLTAGE (PIN 2) (V) 8 Figure 25 : 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 8224B-26.EPS 4.85 Black Spike Noise Clamp t 9/12 10/12 8224B-27.EPS AFC Output 12V Tuner AGC Output R15 6.8kΩ 9V R16 100kΩ R17 100kΩ 390Ω R34 15Ω R35 C16 2.2µF C33 10µF Tuner AGC 9V Delay C17 10nF DZ1 BZX55C 10V Q4 BC337 R14 27kΩ IF1 1nF P1 10kΩ 1 24 VIDEO SAW FILTER BGDK C32 10nF R13 330Ω C15 100nF 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 10µF 1N4148 D1 1N4148 7 STV8224B 19 38.9MHz 5 20 C29 10nF R22 Switching Voltage 4 21 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 +9V CVBS Output (To SCART) CVBS Ouput External CVBS Input (From SCART) P2 10kΩ 3.3kΩ Switched Sound Output Demodulated Sound Output (To SCART) External Sound Input (From SCART) STV8224B APPLICATION DIAGRAM (B/G/D/K) STV8224B 8224B-28.EPS AFC Output 12V Tuner AGC Output R15 6.8kΩ 9V R16 100kΩ R17 100kΩ 390Ω R34 15Ω R35 C16 47µF 9V C33 10µF DZ1 BZX55C 10V Q4 BC337 R14 27kΩ Switching Voltage 1nF Tuner AGC Delay P1 10kΩ 1 24 2 23 C15 100nF C32 10nF R13 330Ω 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 10µF 1N4148 D1 1N4148 7 8 STV8224B 18 R25 2.7kΩ 1.8kΩ 10 15 C26 100nF R24 4.7kΩ R27 R20 1kΩ 1.8kΩ R21 C24 1nF 9 16 Level Switch 5 6 8 C22 10µF SW4 STD R28 4.7kΩ 12 13 7 SW1 8.2µH CF3 C27 470nF Mute TRAP FILTER (5.5MHz - 6.5MHz) L6 R26 3.9kΩ Q3 BC547 +9V 11 14 C7 68nF C23 10µF STV8225 IC1 4 11 3 9 R12 2.2kΩ R9 560Ω BC547 Q2 R29 75Ω 75Ω R18 R10 22Ω +9V 470nF C30 C31 100nF +9V CVBS Output (to SCART) CVBS Ouput External CVBS Input (From SCART) P2 10kΩ 3.3kΩ Switched Sound Output Sound Output (To SCART) External Sound Input (From SCART) R32 10kΩ Volume Control 4.7µF C6 10µF 220Ω 10 C8 R11 C12 100nF 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 STV8224B APPLICATION DIAGRAM (B/G/D/K, L) STV8224B - STV8225 11/12 STV8224B PACKAGE MECHANICAL DATA 24 PINS - PLASTIC SHRINK DIP E A2 A L A1 E1 Stand-o ff B B1 e e1 e2 c D E 13 .015 F 24 0,38 12 e3 SDIP24 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 2.54 Millimeters Typ. 3.30 0.46 1.02 0.25 22.86 6.40 1.778 7.62 3.30 Max. 5.08 4.57 0.56 1.14 0.38 23.11 8.64 6.86 10.92 1.52 3.81 e2 Min. 0.020 0.120 0.0142 0.030 0.0090 0.890 0.30 0.240 0.10 Inches Typ. 0.130 0.0181 0.040 0.0098 0.90 0.252 0.070 0.30 0.130 Max. 0.20 0.180 0.0220 0.045 0.0150 0.910 0.340 0270 0.430 0.060 0.150 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. 12/12 SDIP24.TBL 1 PMSDIP24.EPS Gage Plane