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TDA6650TT 데이터시트(PDF) 6 Page - NXP Semiconductors |
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TDA6650TT 데이터시트(HTML) 6 Page - NXP Semiconductors |
6 / 54 page TDA6650TT_6651TT_5 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 05 — 10 January 2007 6 of 54 NXP Semiconductors TDA6650TT; TDA6651TT 5 V mixer/oscillator and low noise PLL synthesizer 6.2 Pinning 7. Functional description 7.1 Mixer, Oscillator and PLL (MOPLL) functions Bit BS1 enables the BS1 port, the low band mixer and the low band oscillator. Bit BS2 enables the BS2 port, the mid band mixer and the mid band oscillator. When both BS1 and BS2 bits are logic 0, the high band mixer and the high band oscillator are enabled. The oscillator signal is applied to the fractional-N programmable divider. The divided signal fdiv is fed to the phase comparator where it is compared in both phase and frequency with the comparison frequency fcomp. This frequency is derived from the signal present on the crystal oscillator fxtal and divided in the reference divider. There is a fractional calculator on the chip that generates the data for the fractional divider as well as MOSCIN1 34 5 mid band oscillator input 1 MOSCIN2 35 4 mid band oscillator input 2 OSCGND 36 3 oscillators ground LOSCOUT 37 2 low band oscillator output LOSCIN 38 1 low band oscillator input Table 4. Pin description…continued Symbol Pin Description TDA6650TT TDA6651TT Fig 2. Pin configuration TDA6650TT Fig 3. Pin configuration TDA6651TT TDA6650TT HBIN1 LOSCIN HBIN2 LOSCOUT MBIN OSCGND LBIN MOSCIN2 RFGND MOSCIN1 IFFIL1 HOSCIN2 IFFIL2 HOSCOUT2 BS4 HOSCOUT1 AGC HOSCIN1 BS3 IFGND BS2 IFOUTA BS1 IFOUTB BVS VCCA ADC/BS5 PLLGND SCL VCCD SDA CP AS VT XTOUT n.c. XTAL1 XTAL2 001aac025 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 TDA6651TT LOSCIN HBIN1 LOSCOUT HBIN2 OSCGND MBIN MOSCIN2 LBIN MOSCIN1 RFGND HOSCIN2 IFFIL1 HOSCOUT2 IFFIL2 HOSCOUT1 BS4 HOSCIN1 AGC IFGND BS3 IFOUTA BS2 IFOUTB BS1 VCCA BVS PLLGND ADC/BS5 VCCD SCL CP SDA VT AS n.c. XTOUT XTAL2 XTAL1 001aac026 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 |
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