WM8734SEFL Wolfson Microelectronics, WM8734SEFL Datasheet - Page 39

• Manufacturer Part Number: WM8734SEFL
• Description: Audio CODECs Stereo CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8734SEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8734
TERMINOLOGY
1.
2.
DAC FILTER RESPONSES
Figure 25 DAC Digital Filter Frequency Response –Type 1
Figure 27 DAC Digital Filter Frequency Response –Type 2
ADC FILTER RESPONSES
Figure 29 ADC Digital Filter Frequency Response –Type 1
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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
-100
-100
-100
-20
-40
-60
-80
-20
-40
-60
-80
-20
-40
-60
-80
0
0
0
0
0
0
0.5
0.5
0.5
1
1
1
Frequency (Fs)
Frequency (Fs)
Frequency (Fs)
1.5
1.5
1.5
2
2
2
2.5
2.5
2.5
3
3
3
Figure 26 DAC Digital Filter Ripple –Type 1
Figure 28 DAC Digital Filter Ripple –Type 2
Figure 30 ADC Digital Filter Ripple –Type 1
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
-0.01
-0.02
-0.03
-0.04
-0.01
-0.02
-0.03
-0.04
-0.05
-0.06
0.02
0.01
0.04
0.03
0.02
0.01
0.02
0.01
0
0
0
0
0
0
0.05
0.05
0.1
0.05
0.1
0.15
0.15
0.2
Frequency (Fs)
0.2
0.1
Frequency (Fs)
Frequency (Fs)
0.25
0.25
0.3
0.15
0.3
PD, Rev 4.3, January 2009
0.35
0.35
0.4
0.4
0.2
Production Data
0.45
0.45
0.5
0.25
0.5
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