STV8224B

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 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. PIN CONNECTIONS SHRINK24 (Plastic Package) ORDER CODE : STV8224B PIF PLL FILTER AFC OUTPUT CVBS OUTPUT SWITCHING INPUT (STANDARD + 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 TUNER AGC STARTING POINT ADJUSTMENT TUNER AGC OUTPUT AGC CAPACITOR AGC CAPACITOR (L STANDARD) IF INPUT IF INPUT GROUND V CC EXTERNAL AUDIO INPUT FM DEMODULATED AUDIO OUTPUT AUDIO SWITCH OUTPUT 8224B-01.EPS VOLUME CONTROL + MUTE January 1997 1/12 STV8224B 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 21 AGC 22 TUNER AGC OUTPUT 23 TUNER AGC 24 DC VOLUME VID AMP WHITE NOISE & SPOT INVERT 3 SFE 5.5 SFE 6.5 CVBS OUT Int/Ext LOGIC INTERFACE BG/L SIF PLL LIMITER AUDIO Vref MUTE 14 13 16 15 7 8 4 9 STV8224B 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 2/12 8224B-02.TBL THERMAL DATA 8224B-01.TBL V 8224B-02.EPS 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 SUPPLY VCC ICC Supply Voltage Supply Current I17, VCC = 9V 8 9 70 12.6 95 V mA µVRMS kΩ pF dB mVRMS Parameter Test Conditions Min. Typ. Max. Unit IF AMPLIFIER V19-20 R 19-20 C 19-20 Gr Input Sensitivity (RMS) Differential Input Resistance Differential Input Capacitance Gain Control Range Max Input Signal SYNCHRONOUS VIDEO DEMODULATOR DFPC AFC S2 AFC Slope See Figure 21 0.2 µA/kHz Vision Carrier Capture -1.4 1.6 MHz +1dB Video at Output -3dB Video at Output 70 2 2 68 180 DEMODULATED VIDEO OUTPUT (Pin 3) VA3 BG vs L VS3 Amplitude Amplitude Difference Top Sync Level Zero Carrier Level BW Dg Dp Vr3c Vr3h I3 S/N VWTH VWIL VBTH VBIL 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 Note 1 - Weighted CCIR-567 Note 2 3 56 B/G and L B/G L -3dB Video Signal 7 1.6 1.9 4.4 1.8 9 6 3 1 1 5 61 52 4.85 3.6 1.3 2.5 8 6 10 10 Top Sync to White 2 2.3 2.6 10 2.2 VPP % V V V MHz % Degree mV mV mA dB dB V V V V µA µA AGC CIRCUIT (BG MODE) I22DBG C/D S Discharge Current Charging/Discharging Ratio 12 20 45 28 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). 3/12 8224B-03.TBL I22CBG Charging Current 550 950 1300 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 AGC CIRCUIT (L MODE) I22CL I22DL I22 CL+ Charging Current Discharge Current Additional Charging Current Threshold Voltage Level for Additional Charging Current I22 DL+ Additional Discharging Current Threshold Voltage Level for Additional Discharging Current TUNER AGC I23 S23 I23+ Maximum Sinked Current Current Slope Maximum Tuner Plus Sinked Current R24 = 5kΩ Note 4 1.5 100 2 170 40 2.5 230 mA µA/dB mA Refered to Pin 3 L in case of missing, VITS Pulses and no White in Video Content Refered to Pin 3 28 Note 3 2 3.3 0.3 5 2.75 40 2.25 56 4.5 mA µA µA V µA V Parameter Test Conditions Min. Typ. Max. Unit FM SOUND DEMODULATION V 8S R8 AMR SVR V15 THD R 15 S/N 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 See Note 6, 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 600 55 Note 5 Ripple signal : 100Hz, 0.5VPP 50 28 0.85 150 600 4.2 61 33 1.1 0.2 750 60 1.4 1 900 µVRMS Ω V dB dB VRMS % Ω dB Black Picture (sync only) White Picture 250kHz Square Wave VOLUME CONTROL VC Range Control Range 47 46 47 52 50 52 dB dB dB 8224B-04.TBL See Figure 22 72 77 dB 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 (mV ) S RMS 6. = 20 log (dB) VN (mVRMS) N 4/12 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 AUDIO SWITCH R 16 CRtk En EXTHD Input Resistance Crosstalk Output Noise Level (Pin 14) THD on External Signal (Pin 14) Audio Reference Voltage (Pin 9) VIDEO SWITCH VDC 12 VS12 V11 VS11 GEX I12 VBW GIN MUTE (Pin 13) VTH13 Threshold Voltage Pin 13 0.2 0.3 0.4 V 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 V12 = VDC12 = 1.5V VIN = 1VPP -0.5 5.5 4 No signal 1.7 No signal 1.6 1.9 1.8 2 1.5 55 6 5 1 15 0 +0.5 5 6.5 2.3 2.2 V V V V dB dB V µA MHz dB Weighted CCIR 468-4, V13 = 0.5V (quasi peak level) VIN = 2VRMS, Attenuation = 0dB 55 70 70 80 70 0.1 4.5 0.3 85 kΩ dB µV % V Parameter Test Conditions Min. Typ. Max. Unit CONTROL INPUT Negative Modulation Threshold 3 Positive Modulation Threshold 2 Positive Modulation Threshold 1 Negative Modulation Video : External - Audio : External Level linked to VCC Video : External - Audio : External Level linked to VCC Video : Internal - Audio : External Level linked to VCC Video : Internal - Audio : Internal 7.2 6.4 4.9 4.1 2.6 1.8 2.2 4.5 6.8 7.2 6.4 4.9 4.1 2.6 1.8 V V V V V V 8224B-05.TBL V 5/12 STV8224B INPUT/OUTPUT PIN CONFIGURATION Figure 1 : PIF PLL Filter Figure 2 : AFC Output 2 1 8224B-03.EPS Figure 3 : CVBS Output Figure 4 : Switching Input Standard + INT/EXT 3 4 Figure 5 : IFLC 8224B-05.EPS Figure 6 : Audio High Pass Filter 2kΩ 2kΩ 5 6 7 8224B-07.EPS 6/12 8224B-08.EPS 8224B-06.EPS 8224B-04.EPS STV8224B 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 600Ω 600Ω 8 9 10 Figure 9 : Video Switch Output 8224B-09.EPS Figure 10 : External Video Input 11 12 8224B-11.EPS Figure 11 : Volume Control + Mute Figure 12 : Audio Switch Output 13 14 8224B-14.EPS 8224B-13.EPS Figure 13 : FM Demodulated Audio Output Figure 14 : External Audio Input 750Ω 15 8224B-15.EPS 16 7/12 8224B-16.EPS 8224B-12.EPS 8224B-10.EPS STV8224B INPUT/OUTPUT PIN CONFIGURATION (continued) Figure 15 : VCC Figure 16 : IF Input 1kΩ 15V 19 1kΩ 17 20 8224B-17.EPS Figure 17 : AGC Capacitor Figure 18 : AGC Capacitor 21 22 8224B-19.EPS 8224B-20.EPS Figure 19 : Tuner AGC Output Figure 20 : Tuner AGC Starting Point Adjustment 23 24 8224B-21.EPS 8224B-22.EPS 8/12 8224B-18.EPS STV8224B 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 8224B-23.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 8224B-24.EPS 8224B-26.EPS 8224B-30.EPS Current Conversion with 100kΩ/100kΩ 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 8224B-25.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 = 1kΩ R24 = 3kΩ R24 = 5kΩ 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 9/12 10/12 C9 10µF L4 R11 220Ω 10µF C21 47µF C7 68nF C20 C18 1µF 100nF 22 21 20 19 18 17 16 15 14 13 24 23 STV8224B External Sound Input (From SCART) C8 3.3µH C6 4.7µF IF1 VIDEO SAW FILTER BGDK R32 10kΩ Demodulated Sound Output (To SCART) Switched Sound Output 3.3kΩ P2 10kΩ +9V APPLICATION DIAGRAM (B/G/D/K) STV8224B Tuner AGC Output Volume control Mute C31 100nF SW1 C16 2.2µF P1 10kΩ R14 27kΩ R15 6.8k Ω C17 10nF STV8224B 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 Ω 38.9MHz C29 10nF R24 4.7kΩ C24 1nF +9V 15Ω Tuner AGC 9V Delay C30 470nF R34 C33 10µF 390Ω R29 75Ω C27 470nF External CVBS Input (From SCART) 9V DZ1 BZX55C 10V CVBS Ouput R28 4.7k Ω Q3 BC547 +9V SW4 STD R25 2.7kΩ R26 3.9k Ω R17 100kΩ Switching Voltage C28 68pF R20 1kΩ 1N4148 D2 1.8k Ω BFP 5.5MHz CF1 R21 AFC Output C32 10nF R16 100kΩ R10 22Ω BC547 Q2 R27 TRAP FILTER (5.5MHz - 6.5MHz) L6 R12 2.2kΩ R18 CVBS Output (To SCART) BFP 6.5MHz CF2 D1 1N4148 R22 150Ω 1.8k Ω 8.2µH CF3 R9 560Ω 75Ω 8224B-27.EPS L7 3.3µH 47µF C12 R11 220Ω 10µF Sound Output (To SCART) 100nF C8 10µF External Sound Input (From SCART) C11 C9 C10 22µF 14 13 12 11 10 9 8 IF2 SOUND SAW FILTER L STD IC1 1 2 3 4 5 6 7 STV8225 L4 3.3µH C21 47µF C20 C18 1µF 100nF 20 14 13 19 18 17 16 15 C13 10µF Level Switch C23 10µF C22 10µF IF1 APPLICATION DIAGRAM (B/G/D/K, L) STV8224B - STV8225 VIDEO SAW FILTER BGDKL C7 68nF C6 4.7µF Switched Sound Output R32 10kΩ Volume Control 3.3k Ω +9V P2 10kΩ C31 100nF Tuner AGC Output C19 47nF 22 21 C16 47µF P1 10kΩ 24 23 R14 27kΩ Mute C17 10nF R15 6.8kΩ IC2 1 2 3 4 5 6 7 8 9 10 11 12 STV8224B SW1 12V LC1 C25 10µF C26 100nF R35 Q4 BC337 15Ω 1nF C15 100nF R13 330Ω 38.9MHz C29 10nF C24 1nF R24 4.7k Ω R21 D2 1N4148 1.8kΩ R20 1kΩ D1 1N4148 R22 150Ω R27 1.8kΩ R25 2.7k Ω 9V Tuner AGC Delay C30 470nF R34 C33 10µF 390Ω R29 75Ω +9V C27 470nF External CVBS Input (From SCART) 9V DZ1 BZX55C 10V CVBS Ouput R28 4.7k Ω Q3 BC547 +9V R17 100k Ω C32 10nF C28 68pF BFP 5.5MHz CF1 AFC Output R16 100k Ω Switching Voltage R26 3.9kΩ SW4 STD R10 22Ω BC547 Q2 TRAP FILTER (5.5MHz - 6.5MHz) L6 8.2µH CF3 R12 2.2k Ω R9 560Ω R18 75Ω CVBS Output (to SCART) BFP 6.5MHz CF2 STV8224B 11/12 8224B-28.EPS STV8224B 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. 12/12 SDIP24.TBL 10.92 1.52 3.81 0.430 0.060 0.150 PMSDIP24.EPS