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STV8223A Datasheet(PDF) 3 Page - STMicroelectronics |
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STV8223A Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 10 page 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 Parameter Test Conditions Min. Typ. Max. Unit SUPPLY VCC Supply Voltage 8 9 12.6 V ICC Supply Current I17,VCC =9V 70 95 mA IF AMPLIFIER V19-20 Input Sensitivity (RMS) -3dB Video at Output 70 µVRMS R19-20 Differential Input Resistance 1.5 k Ω C19-20 Differential Input Capacitance 2 pF Gr Gain Control Range 64 dB Max Input Signal +1dB Video at Output 110 mVRMS SYNCHRONOUS VIDEO DEMODULATOR DFPC Vision Carrier Capture -1.4 1.6 MHz AFC S2 AFC Slope See Figure 20 0.2 µA/kHz DEMODULATED VIDEO OUTPUT (Pin 3) VA3 Amplitude Top Sync to White 2 2.3 2.6 VPP VS3 Top Sync Level B/G 1.6 1.9 2.2 V Zero Carrier Level B/G 4.4 V BW Bandwidth -3dB Video Signal 6 7 MHz Dg Differential Gain 6 8 % Dp Differential Phase 6 8 Degree Vr3c Residual Carrier Signal (RMS Value) 1 10 mV Vr3h Residual 2nd Harmonic (RMS Value) 1 10 mV I3 Internal Bias of Emitter Follower 3 5 mA S/N Signal to Noise Ratio Note 1 - Weighted CCIR-567 53 58 dB Intermodulation 1.07MHz Note 2 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 AGC CIRCUIT (BG MODE) I22CBG Charging Current 550 950 1300 µA I22DBG Discharge Current 12 20 28 µA C/D Charging/Discharging Ratio 45 TUNER AGC I23 Maximum Sinked Current 1.5 2 2.5 mA S23 Current Slope R24 =5k Ω 100 170 230 µA/dB I23+ Maximum Tuner Plus Sinked Current Note 3 40 mA Notes : 1. S N = 20 log 10 Vout black white VN (mVRMS) at BW = 5MHz 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). STV8223A 3/10 |
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