SBAS906 March 2018 TLV320ADC3100
PRODUCTION DATA.
This filter is intended for use at sampling rates up to 48 kHz. When configuring this filter, the oversampling ratio of the ADC can either be 128 or 64. For highest performance, the oversampling ratio must be set to 128. Filter A can also be used for 96 kHz at an AOSR of 64. Table 10 specifies the performance of filter A. Figure 40 shows the frequency response for filter A.
PARAMETER | CONDITION | VALUE (Typical) | UNIT |
---|---|---|---|
AOSR = 128 | |||
Filter gain pass band | 0 fS–0.39 fS | 0.062 | dB |
Filter gain stop band | 0.55 fS–64 fS | –73 | dB |
Filter group delay | 17 / fS | s | |
Pass-band ripple, 8 kSPS | 0 fS–0.39 fS | 0.062 | dB |
Pass-band ripple, 44.18 kSPS | 0 fS–0.39 fS | 0.05 | dB |
Pass-band ripple, 48 kSPS | 0 fS–0.39 fS | 0.05 | dB |
AOSR = 64 | |||
Filter gain pass band | 0 fS–0.39 fS | 0.062 | dB |
Filter gain stop band | 0.55 fS–32 fS | –73 | dB |
Filter group delay | 17 / fS | s | |
Pass-band ripple, 8 kSPS | 0 fS–0.39 fS | 0.062 | dB |
Pass-band ripple, 44.18 kSPS | 0 fS–0.39 fS | 0.05 | dB |
Pass-band ripple, 48 kSPS | 0 fS–0.39 fS | 0.05 | dB |
Pass-band ripple, 96 kSPS | 0 kHz–20 kHz | 0.1 | dB |
ADC channel response for decimation filter A
(red line corresponds to –73 dB) |