Datasheet

–10

–20

–30

–40

–50

–60

–70

–80

–90

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

FrequencyNormalizedtof

Magnitude – dB

ADCChannelResponseforDecimationFilterB

(Redlinecorrespondsto –44dB)

G014

TLV320ADC3001

www.ti.com

SLAS548C –OCTOBER 2008– REVISED APRIL 2011

Decimation Filter B

Filter B is intended to support sampling rates up to 96kHz at a oversampling ratio of 64.

Table 11. ADC Decimation Filter B, Specifications

Parameter Condition Value (Typical) Units

AOSR = 64

Filter gain pass band 0…0.39 f

±0.077 dB

Filter gain stop band 0.60 f

…32 f

–46 dB

Filter group delay 11/f

Sec.

Pass-band ripple, 8 ksps 0…0.39 f

0.076 dB

Pass-band ripple, 44.18 ksps 0…0.39 f

0.06 dB

Pass-band ripple, 48 ksps 0…0.39 f

0.06 dB

Pass-band ripple, 96 ksps 0…20kHz 0.11 dB

Figure 44. ADC Decimation Filter B, Frequency Response