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ATA5429-PLUW Datasheet(PDF) 9 Page - ATMEL Corporation |
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ATA5429-PLUW Datasheet(HTML) 9 Page - ATMEL Corporation |
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9 / 97 page  9 4841D–WIRE–10/07 ATA5423/ATA5425/ATA5428/ATA5429 2.3 Typical Remote Control Unit Application, 2 Li Batteries (6V) Figure 2-3 shows a typical 433.92 MHz 2 Li battery Remote Control Unit application. The exter- nal components are 11 capacitors, 1 resistor, 2 inductors and a crystal. C 1 and C4 are 68 nF voltage supply blocking capacitors. C 2 and C3 are 2.2 µF supply blocking capacitors for the inter- nal voltage regulators. C 5 is a 10 nF supply blocking capacitor. C6 is a 15 nF fixed capacitor used for the internal quasi-peak detector and for the high-pass frequency of the data filter. C 7 to C 11 are RF matching capacitors in the range of 1 pF to 33 pF. L1 is a matching inductor of about 5.6 nH to 56 nH. L 2 is a feed inductor of about 120 nH. A load capacitor for the crystal of 9 pF is integrated. R 1 is typically 22 kΩ and sets the output power to about 5.5 dBm. Figure 2-3. Typical Remote Control Unit Application, 433.92 MHz, 2 Li Batteries (6V) CS NC RSSI CDEM SCK DEM_OUT SDI_TMDI SDO_TMDO ATA5423/ATA5425 ATA5428/ATA5429 CLK VCC VSS Sensor VSINT XTAL2 + Lithium cell Loop antenna AVCC ATmega 48/88/168 13.25311 MHz N_RESET IRQ NC NC RF_IN C7 C11 C6 C3 C1 C4 433_N868 NC NC NC RF_OUT PWR_H R_PWR NC NC C2 C9 C10 R1 L2 L1 C8 C5 + Lithium cell |
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