ZHCSQZ9A March 2022 – October 2022 ADS117L11
PRODUCTION DATA
The following figures are produced by the TINA-TI™, SPICE-based analog simulation program. The THS4551 SPICE model can be downloaded at the THS4551 product folder.
Figure 9-2 shows the frequency response of the antialias filter and the total response of the antialias filter and the ADC. As shown in this image, the filter provides 90-dB stop-band attenuation from the Nyquist frequency to the 12.8-MHz fMOD frequency.
Figure 9-3 shows the analog filter group delay. The 0.575-μs group delay is small in comparison to the 85-μs group delay of the ADC digital filter (34 / fDATA). The analog filter group delay linearity is 0.017 μs, peaking at the edge of the 165-kHz pass band.