WM8783 Datasheet, PDF (12/17 Pages) Wolfson Microelectronics plc – Stereo Low Power 96kHz ADC

WM8783
DIGITAL FILTER CHARACTERISTICS
PARAMETER
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
TEST CONDITIONS
+/- 0.1dB
-6dB
f > 0.546 fs
MIN
0
0.546s
-60
TYP
0.5fs
MAX
0.454 fs
+/- 0.1
16.5 / fs
Production Data
UNIT
dB
dB
s
TERMINOLOGY
1. Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)
2. Pass-band Ripple – any variation of the frequency response in the pass-band region
ADC FILTER RESPONSE
20
-2.2m
-20
-40.01
-60.01
-80.01
-100
-120
-140
-160
-180
-200
0
MAGNITUDE(dB)
17.64k
35.28k
52.92k
70.56k
88.2k
105.8k
123.5k
141.1k
158.8k
176.4k
Figure 6 ADC Frequency Response up to 4 x fs (Sample rate, fs = 48kHz)
w
PD, August 2010, Rev 4.0
12