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TDA8822M Scheda tecnica(PDF) 4 Page - NXP Semiconductors |
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TDA8822M Scheda tecnica(HTML) 4 Page - NXP Semiconductors |
4 / 28 page 1997 Jan 08 4 Philips Semiconductors Preliminary specification Universal I2C-bus programmable RF modulator TDA8822 BLOCK DIAGRAM Fig.1 Block diagram. handbook, full pagewidth MGE674 VIDEO PHASE DETECTOR VIDEO CHARGE PUMP VCO CLIP TPSG SWITCH ADDER AUDIO CHARGE PUMP AUDIO PHASE DETECTOR PROG. DIVIDER 14 BITS PROG. DIVIDER I2C-BUS RECEIVER AND LOGIC fdiv(audio) fdiv(video) fref(video) fref(audio) REFERENCE DIVIDER CRYSTAL OSCILLATOR PRESCALER DIVIDE-BY-8 RF OSCILLATOR MIXER OUTPUT BUFFER VOLTAGE REGULATOR CLAMP LOOP AMP. SND-IF AMP. AUDIO AMP. NICAM AMP. VIDEO AMP. in-lock flag I2C-bus control PS setting sound oscillator ON/OFF DEV setting MD setting TPSG ON/OFF test test frequency setting frequency setting RF oscillator ON/OFF test test test 18 19 RFA RFB 1 VCCA 23 AGND 24 VIDEO 21 NICAM 22 AUDIO 3 PREEMPH 2 ACP 14 SCL 15 SDA 16 P0 17 TPSG 11 13 VCCD DGND 12 XTAL 9 VVT 8 10 7 6 5 4 VCP RFOSCD RFOSCC OGND RFOSCB RFOSCA 20 RFGND TDA8822 |
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