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WM8351 Fiches technique(PDF) 27 Page - Wolfson Microelectronics plc

No de pièce WM8351
Description  Wolfson AudioPlus??Stereo CODEC with Power Management
PDF  330 Pages
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Fabricant  WOLFSON [Wolfson Microelectronics plc]
Site Internet  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8351 Fiches technique(HTML) 27 Page - Wolfson Microelectronics plc

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Production Data
WM8351
w
PD, April 2012, Rev 4.5
27
9
TYPICAL PERFORMANCE DATA
9.1
AUDIO CODEC
Typical THD+N performance of the Headphone Drivers is shown below for 16
 and 32 headphone
loads. These graphs are derived whilst using the WM8351 Power Management to generate the power
supply rails for the audio CODEC. The supply conditions are as follows:
AVDD = HPVDD = 3.0V, generated by WM8351 LDO1
DCVDD = DBVDD = 1.8V, generated by WM8351 DC-DC1
AC coupled headphone
(16 Ohm Load)
AVDD=HPVDD=3.0V
(WM8351 - LDO1)
DCVDD=DBVDD=1.8V
(WM8351 - DCDC1)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
5
10
15
20
25
30
35
Output Power (mW)
THD+N Amplitude (dBV)
AC coupled Headphone
(32 Ohm Load)
AVDD=HPVDD=3.0V
(WM8351 - LDO1)
DCVDD=DBVDD=1.8V
(WM8351 - DCDC1)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0
5
10
15
20
25
30
Output Power (mW)
THD+N Amplitude (dBV)



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