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TDA8722T Scheda tecnica(PDF) 4 Page - NXP Semiconductors |
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TDA8722T Scheda tecnica(HTML) 4 Page - NXP Semiconductors |
4 / 28 page 1998 Jun 23 4 Philips Semiconductors Product specification I2C-bus programmable modulator for negative video modulation and FM sound TDA8722 BLOCK DIAGRAM Fig.1 Block diagram. handbook, full pagewidth MBE401 LOGIC enable/ select f DIV f ref 14 10 bits I C-BUS 2 RECEIVER 12-BIT DIVIDER (N) PHASE DETECTOR enable CHARGE PUMP AMP 7 DIVIDER (M = 128) 31.25 kHz 4 MHz OSCILLATOR 9 XTAL 11 VDDD DGND 10 8 AMP CP PRESCALER (8) ASYMMETRICAL OUTPUT BUFFER UHF OSCILLATOR TDA8722 4 5 6 UOSCB OGND UOSCA RF oscillator on PC AUDIO FM MODULATOR 12 13 SDA SCL P0 SOSCB SOSCA AUDIO 3 2 1 SWITCH TPSG balance test TPSG on MIXER 16 15 VOLTAGE REGULATOR 18 20 17 ADJUST AGND VDDA RFA RFB CLIP CLAMP 19 VIDEO VIDEO AMP |
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