Switched-Capacitor Filter Frequency Response using TDFS Mike DonnellyDesigner19 × Mike Donnelly Member for 10 years 8 months 1,628 designs 10 groups Member of the PartQuest Explore Development Team. Focused on modeling and simulation of analog, mixed-signal and multi-discipline systems covering a broad range of applications, including power electronics, controls and mechatronic systems. https://explore.partquest.com/node/598 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/598"></iframe> Title Description <p>This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p>Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p>For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:42 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660049 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660049"></iframe> Title Description <p msthash="197" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="198" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="199" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:42 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660048 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660048"></iframe> Title Description <p msthash="173" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="174" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="175" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:42 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660047 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660047"></iframe> Title Description <p msthash="149" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="150" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="151" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:36 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660045 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660045"></iframe> Title Description <p msthash="221" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="222" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="223" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:36 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660044 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660044"></iframe> Title Description <p msthash="197" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="198" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="199" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:36 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660043 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660043"></iframe> Title Description <p msthash="149" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="150" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="151" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:27 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660042 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660042"></iframe> Title Description <p msthash="197" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="198" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="199" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Switched-Capacitor Filter Frequency Response using TDFS - on Wed, 06/12/2024 - 10:27 Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/660041 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/660041"></iframe> Title Description <p msthash="89" msthidden="1" msttexthash="39521664">This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p msthash="90" msthidden="1" msttexthash="90567893">Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p msthash="91" msthidden="1" msttexthash="56727060">For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Switched-Capacitor Filter Frequency Response using TDFS Designer0 × Member for 4 years 6 months 0 designs 0 groups https://explore.partquest.com/node/651120 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/651120"></iframe> Title Description <p>This design shows the use of the TDFS (Time Domain Frequency Sweep) method to measure the frequency response of two low-pass filters. One is just a simple RC filter circuit with 1 kHz cut-off frequency. The other is an equivalent filter using a switched-capacitor implementation.</p> <p>Both small-signal AC (frequency domain) and TDFS (time-domain) analyses are run, and both give the same results for the RC filter. However, because of the switching aspect of the switched-capacitor filter, the results of the AC analysis are meaningless for that circuit. However, the TDFS approach is valid for that filter also, as well as for any other circuit or system containing switching, sampled data or digital content.</p> <p>For reference, note in the schematic that the R-C filter is connected to channel 1 of the TDFS instrument, and the switched capacitor filter is connected to channel 2, hence the v1 and v2 distinction in the name of the results for the magnitude (dbMag) and phase. Both are measured relative to the stimulus input vosc, the oscillator output.</p> About text formats Tags switched capacitorFrequency ResponseTDFS Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -