TSC2117 datasheet(39/192 Pages) TI

Part #	TSC2117

Description	Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller

PDF	192 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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39 / 192 page

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0.2

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1.2

1.4 1.6

1.8

FrequencyNormalizedw.r.t.FS

ADCChannelResponseforDecimationFilter A

(Redlinecorrespondsto-44dB)

TSC2117

Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D

Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller

www.ti.com

SLAS550A – APRIL 2009 – REVISED JUNE 2009

5.5.4.4.2 Decimation Filter B

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

Table 5-21. ADC Decimation Filter B, Specifications

Parameter

Condition

Value (Typical)

Unit

AOSR = 64

Filter gain pass band

…0.39 f

±0.077

Filter gain stop band

0.60 fS…32 fS

–46

Filter group delay

11/fS

Pass-band ripple, 8 ksps

…0.39 f

0.076

Pass-band ripple, 44.1 ksps

…0.39 f

0.06

Pass-band ripple, 48 ksps

…0.39 f

0.06

Pass-band ripple, 96 ksps

…20 kHz

0.11

Figure 5-14. ADC Decimation Filter B, Frequency Response

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