 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
ST72260G датащи(PDF) 152 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST72260G датащи(HTML) 152 Page - STMicroelectronics |
|
|
152 / 171 page  ST72260G, ST72262G, ST72264G 152/171 13.12 10-BIT ADC CHARACTERISTICS TA = -40°C to 85°C, unless otherwise specified Figure 105. RAIN max. vs fADC with CAIN=0pF 3) Figure 106. Recommended CAIN/RAIN values 4) Figure 107. Analog Input equivalent circuit Notes: 1. Data based on design simulation. 2. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10k Ω). Data based on characterization results, not tested in production. 3. CPARASITIC represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad ca- pacitance (3pF). A high CPARASITIC value will downgrade conversion accuracy. To remedy this, fADC should be reduced. 4. This graph shows that depending on the input signal variation (fAIN), CAIN can be increased for stabilization time and decreased to allow the use of a larger serial resistor (RAIN). It is valid for all fADC frequencies ≤ 4MHz. Symbol Parameter Conditions Min Typ Max Unit fADC ADC clock frequency 0.41) 4MHz VAIN Conversion voltage range VSS VDD V CADC Internal sample and hold capacitor 6 pF tCONV Conversion time fADC=4MHz 28 µs 112 1/fADC RAIN External input impedance see Figure 105 and Figure 1062)3)4) k Ω CAIN External capacitor on analog input pF fAIN Variation frequency of analog input signal Hz 0 5 10 15 20 25 30 35 40 45 010 30 70 CPARASITIC (pF) 4 MHz 2 MHz 1 MHz 0.1 1 10 100 1000 0.01 0.1 1 10 fAIN(KHz) Cain 10 nF Cain 22 nF Cain 47 nF AINx ST72XXX VDD IL ±1 µA VT 0.6V VT 0.6V CADC 6pF VAIN RAIN 10-Bit A/D Conversion 2k Ω(max) CAIN |
|
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
