 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
AT86RF231 датащи(PDF) 13 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
AT86RF231 датащи(HTML) 13 Page - ATMEL Corporation |
|
|
13 / 180 page  13 8111A–AVR–05/08 AT86RF231 the reference frequency, large parasitic capacitances should be avoided. Crystal lines should be routed as short as possible and not in proximity of digital I/O signals. This is especially required for the High Data Rate Modes, refer to Section 11.3 “High Data Rate Modes” on page 137. Crosstalk from digital signals on the crystal pins or the RF pins can degrade the system perfor- mance. Therefore, a low-pass filter (C3, R1) is placed close to the CLKM output pin to reduce the emission of CLKM signal harmonics. This is not needed if the CLKM pin is not used as a microcontroller clock source. In that case, the output should be turned off during device initialization. The ground plane of the application board should be separated into four independent fragments, the analog, the digital, the antenna and the XTAL ground plane. The exposed paddle shall act as the reference point of the individual grounds. Table 5-1. Example Bill of Materials (BoM) for Basic Application Schematic Designator Description Value Manufacture Part Number Comment B1 SMD balun 2.4 GHz Wuerth 748421245 CB1 CB3 LDO VREG bypass capacitor 1 µF AVX Murata 0603YD105KAT2A GRM188R61C105KA12D X5R (0603) 10% 16V CB2 CB4 Power Supply decoupling CX1, CX2 Crystal load capacitor 12 pF AVX Murata 06035A120JA GRP1886C1H120JA01 COG (0603) 5% 50V C1, C2 RF coupling capacitor 22 pF Epcos Epcos AVX B37930 B37920 06035A220JAT2A COG 5% (0402 or 0603) C3 CLKM low-pass filter capacitor 2.2 pF AVX Murata 06035A229DA GRP1886C1H2R0DA01 COG (0603) ±0.5 pF Designed for f CLKM=1 MHz C4 RF matching 0.47 pF Johnstech R1 CLKM low-pass filter resistor 680 Ω Designed for f CLKM=1 MHz XTAL Crystal CX-4025 16 MHz SX-4025 16 MHz ACAL Taitjen Siward XWBBPL-F-1 A207-011 |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
