WM8731SEDS/V Wolfson Microelectronics, WM8731SEDS/V Datasheet - Page 58
![Audio CODECs Stereo Codec with H/P](/photos/16/2/160226/ssop-28_sml.jpg)
WM8731SEDS/V
Manufacturer Part Number
WM8731SEDS/V
Description
Audio CODECs Stereo Codec with H/P
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8731LSEFLR.pdf
(64 pages)
Specifications of WM8731SEDS/V
Interface Type
Serial (2-Wire or 3-Wire), I2S
Resolution
24 bit
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SSOP-28
Minimum Operating Temperature
- 40 C
Number Of Channels
2 ADC / 2 DAC
Snr
90 dB
Thd Plus Noise
- 84 dB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
WM8731 / WM8731L
Figure 47 ADC Digital Filter Frequency Response –Type 2
Figure 49 ADC Digital Filter Frequency Response –Type 3
ADC HIGH PASS FILTER
w
-100
-100
-20
-40
-60
-80
-20
-40
-60
-80
0
0
0
0
0.5
0.5
1
1
Frequency (Fs)
Frequency (Fs)
The WM8731/L has a selectable digital high pass filter to remove DC offsets. The filter response is
characterised by the following polynomial.
H(z) =
1.5
1.5
1 – 0.9995 z
2
2
1 – z
-1
2.5
2.5
-1
3
3
Figure 48 ADC Digital Filter Ripple –Type 2
Figure 50 ADC Digital Filter Ripple –Type 3
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
0.02
0.01
0.02
0.01
0
0
0
0
0.05
0.05
0.1
0.1
Frequency (Fs)
Frequency (Fs)
0.15
0.15
PD, Rev 4.8, April 2009
0.2
0.2
Production Data
0.25
0.25
58