 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC1416CG Datasheet(PDF) 8 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LTC1416CG Datasheet(HTML) 8 Page - Linear Technology |
|
|
8 / 20 page  8 LTC1416 APPLICATIONS INFORMATION Figure 3. Effective Bits and Signal/(Noise + Distortion) vs Input Frequency DYNAMIC PERFORMANCE The LTC1416 has excellent high speed sampling capabil- ity. FFT (Fast Fourier Transform) test techniques are used to test the ADC’s frequency response, distortion and noise at the rated throughput. By applying a low distortion sine wave and analyzing the digital output using an FFT algo- rithm, the ADC’s spectral content can be examined for frequencies outside the fundamental. Figure 2 shows a typical LTC1416 FFT plot. Signal-to-Noise Ratio The Signal-to-Noise plus Distortion Ratio [S/(N + D)] is the ratio between the RMS amplitude of the fundamental input frequency to the RMS amplitude of all other frequency components at the A/D output. The output is band limited to frequencies from above DC and below half the sampling frequency. Figure 2a shows a typical spectral content with a 400kHz sampling rate and a 100kHz input. The dynamic performance is excellent for input frequencies up to and beyond the Nyquist limit of 200kHz, Figure 2b. Effective Number of Bits The Effective Number of Bits (ENOBs) is a measurement of the resolution of an ADC and is directly related to the S/(N + D) by the equation: ENOB = [S/(N + D) – 1.76]/6.02 where ENOB is the Effective Number of Bits of resolution and S/(N + D) is expressed in dB. At the maximum sampling rate of 400kHz the LTC1416 maintains near ideal ENOBs up to the Nyquist input frequency of 200kHz (refer to Figure 3). FREQUENCY (kHz) 0 150 1416 F02a 50 100 200 0 –20 –40 –60 –80 –100 –120 –140 25 75 125 175 fSAMPLE = 400kHz fIN = 101.5625kHz SFDR = 95.2dB SINAD = 80.5dB FREQUENCY (kHz) 0 150 1416 F02b 50 100 200 0 –20 –40 –60 –80 –100 –120 –140 25 75 125 175 fSAMPLE = 400kHz fIN = 189.9414kHz SFDR = 94.8dB SINAD = 80.2dB INPUT FREQUENCY (Hz) 1k 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 86 80 74 68 62 10k 100k 1416 TA02 1M 2M fSAMPLE = 400kHz NYQUIST FREQUENCY Figure 2a. LTC1416 Nonaveraged, 4096 Point FFT, Input Frequency = 100kHz Figure 2b. LTC1416 Nonaveraged, 4096 Point FFT, Input Frequency = 190kHz |
Similar Part No. - LTC1416CG |
|
Similar Description - LTC1416CG |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
