 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
6462011 데이터시트(PDF) 39 Page - Texas Instruments |
|
|
|||||||||||||||||||||||||||||
6462011 데이터시트(HTML) 39 Page - Texas Instruments |
|
|
39 / 68 page  www.ti.com EEG Specific Features Figure 45. FFT Analysis for Impedance Measurement at 31.25Hz Out of band Lead off detection ADS1299 also provides option to do electrode impedance measurement at frequencies outside the EEG bandwidth of interest. The frequency for this AC current source is set at f DR/4. For example to do an AC lead-off detection at 1 kHz the data rate for the device must be set at 4Ksps. These measurements can be done concurrently with the EEG measurement. Figure 46 shows the fft result of AC lead off detection at fDR/4 with data rate of 4Ksps. The impedance component is present at 1KHz and must be bandpass filtered. The EEG information is at low frequencies and the data must be low pass filtered to extract the information. It is recommended to use only nA range current sources for concurrent measurement of EEG and impedance. For µA range the noise from the current source will be too large and it may swamp the EEG signal. 39 SLAU443 – May 2012 EEG Front-End Performance Demonstration Kit Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated |
|
링크 URL |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크 투 데이터시트 | 링크교환 | 제조사별 검색 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 |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
