WM8753 Wolfson Microelectronics plc, WM8753 Datasheet - Page 77

• Manufacturer Part Number: WM8753
• Description: HI FI AND TELEPHONY DUAL CODEC
• Manufacturer: Wolfson Microelectronics plc

WM8753L
Table 75 Voice Codec Digital Filter Characteristics
Table 76 ADC Highpass Filter Characteristics
TERMINOLOGY
1.
2.
w
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
Passband
Passband Ripple
Stopband
Stopband Attenuation
Group Delay
High Pass Filter Corner
Frequency
High Pass Filter Corner
Frequency
High Pass Filter Corner
Frequency
ADC High Pass Filter (HPMODE[1:0] = 11) (256fs, fs=8kHz)
High Pass Filter Corner
Frequency
Voice ADC Filter
Voice DAC Filter
ADC High Pass Filter (HPMODE[1:0] = 00) (256fs, fs=48kHz)
ADC High Pass Filter (HPMODE[1:0] = 01) (256fs, fs=16kHz)
ADC High Pass Filter (HPMODE[1:0] = 10) (256fs, fs=8kHz)
Stop Band Attenuation (dB) – the degree to which the frequency spectrum is attenuated (outside audio band)
Pass-band Ripple – any variation of the frequency response in the pass-band region
PARAMETER
PARAMETER
TEST CONDITIONS
TEST CONDITIONS
+/- 0.3dB
f > 0.53fs
+/- 0.3dB
f > 0.53fs
-0.5dB
-0.1dB
-0.5dB
-0.1dB
-0.5dB
-0.1dB
-0.5dB
-0.1dB
-14dB
-14dB
-3dB
-3dB
-3dB
-3dB
0.53fs
0.53fs
-30
-30
MIN
MIN
0
0
0.5fs
0.5fs
10.4
21.6
7/fs
7/fs
203
341
185
272
170
321
415
3.7
TYP
TYP
82
82
0.414fs
0.414fs
+/- 0.3
+/-0.3
MAX
MAX
AI Rev 3.1 June 2004
Advanced Information
UNIT
UNIT
dB
dB
dB
dB
Hz
Hz
Hz
Hz
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