Datenblatt-Suchmaschine für elektronische Bauteile |
|
AD637JDZ Datenblatt(PDF) 11 Page - Analog Devices |
|
AD637JDZ Datenblatt(HTML) 11 Page - Analog Devices |
11 / 20 page AD637 Rev. K | Page 11 of 20 Table 5. Practical Values of CAV and C2 for Various Input Waveforms Recommended Standard Values for CAV and C2 for 1% Averaging Error @ 60 Hz with T = 16.6 ms Input Waveform and Period Absolute Value Circuit Waveform and Period Minimum R × CAV Time Constant CAV (μF) C2 (μF) 1% Settling Time Symmetrical Sine Wave A 0V T 1/2T 1/2T 0.47 1.5 181 ms Sine Wave with dc Offset B 0V T T T 0.82 2.7 325 ms Pulse Train Waveform C T2 0V T T2 T 10 (T − T2) 6.8 22 2.67 sec D T2 0V T T2 T 10 (T − 2T2) 5.6 18 2.17 sec FREQUENCY RESPONSE The frequency response of the AD637 at various signal levels is shown in Figure 15. The dashed lines show the upper frequency limits for 1%, 10%, and ±3 dB of additional error. For example, note that for 1% additional error with a 2 V rms input, the highest frequency allowable is 200 kHz. A 200 mV signal can be measured with 1% error at signal frequencies up to 100 kHz. To take full advantage of the wide bandwidth of the AD637, care must be taken in the selection of the input buffer amplifier. To ensure that the input signal is accurately presented to the converter, the input buffer must have a −3 dB bandwidth that is wider than that of the AD637. Note the importance of slew rate in this application. For example, the minimum slew rate required for a 1 V rms, 5 MHz, sine wave input signal is 44 V/μs. The user is cautioned that this is the minimum rising or falling slew rate and that care must be exercised in the selection of the buffer amplifier, because some amplifiers exhibit a two-to-one difference between rising and falling slew rates. The AD845 is recommended as a precision input buffer. 10 1k 10M 10k 100k 1M 1 0.1 0.01 1% ±3dB 10% 7V RMS INPUT 2V RMS INPUT 1V RMS INPUT 100mV RMS INPUT 10mV RMS INPUT INPUT FREQUENCY (Hz) Figure 15. Frequency Response |
Ähnliche Teilenummer - AD637JDZ |
|
Ähnliche Beschreibung - AD637JDZ |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller 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 |