wm8350 Wolfson Microelectronics plc, wm8350 Datasheet - Page 27
wm8350
Manufacturer Part Number
wm8350
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8350.pdf
(345 pages)
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Production Data
9
9.1
w
TYPICAL PERFORMANCE DATA
AUDIO CODEC
Typical THD+N performance of the Headphone Drivers is shown below for 16Ω and 32Ω headphone
loads. These graphs are derived whilst using the WM8350 Power Management to generate the power
supply rails for the audio CODEC. The supply conditions are as follows:
THD+N Amplitude (dBV)
THD+N Amplitude (dBV)
-100
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0
0
AVDD = HPVDD = 3.0V, generated by WM8350 LDO1
DCVDD = DBVDD = 1.8V, generated by WM8350 DC-DC6
5
5
AC coupled headphone
AC coupled Headphone
10
10
(32 Ohm Load)
(16 Ohm Load)
Output Power (mW)
Output Power (mW)
15
15
20
20
25
AVDD=HPVDD=3.0V
(WM8350 - LDO1)
DCVDD=DBVDD=1.8V
(WM8350 - DCDC6)
AVDD=HPVDD=3.0V
(WM8350 - LDO1)
DCVDD=DBVDD=1.8V
(WM8350 - DCDC6)
25
30
35
30
PD, June 2009, Rev 4.1
WM8350
27
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