wm8900 Wolfson Microelectronics plc, wm8900 Datasheet - Page 2

• Manufacturer Part Number: wm8900
• Description: Ultra Low Power Codec For Portable Multimedia Applications Featuring Class G Ground Referenced Headphone Driver
• Manufacturer: Wolfson Microelectronics plc

WM8900
BLOCK DIAGRAM
w
LINPUT3/JD
RINPUT3/JD
RINPUT1
RINPUT2
LINPUT2
LINPUT1
MICBIAS
vmid
vmid
W
WM8900
INPUT
PGAs
+
+
-
-
-12 to +19dB,
1dB steps
1dB steps
+19dB,
-12 to
AUX / LCOM
-12 -> 6dB,
3dB steps,
mute
-12 -> 6dB,
3dB steps,
mute
0, 13, 20,
29dB,
mute
0, 13, 20,
29dB,
mute
50K
+
+
50K
-12 -> 6dB,
3dB steps,
-12 -> 6dB,
mute
DGND
mute
3dB steps,
-12 -> 6dB,
3dB steps,
-12 -> 6dB,
3dB steps,
mute
mute
DCVDD
ADCREF
DACREF
ADC
ADC
DBVDD
DIGITAL
VOLUME
FILTERS
ADC
INTERFACE
CPVDDHI
DIGITAL
AUDIO
DIGITAL
FILTERS
VOLUME
DAC
CPVDDLO
SYSCLK
-15 to +6dB,
3dB steps
DAC
DAC
-15 to +6dB,
3dB steps
CFB1
-15 to +6dB,
3dB steps
1uF
FLL
CFB2
-15 to +6dB,
3dB steps
-15 to +6dB,
3dB steps
GPIO
-15 to +6dB,
3dB steps
SYSCLK
VNEG
10uF
+
+
INTERFACE
CONTROL
MIXER
LEFT
RIGHT
MIXER
Charge
Pump
10uF
VPOS
-57 to +6dB,
1dB steps,
-57 to +6dB,
-57 to +6dB,
mute
1dB steps,
-57 to +6dB,
mute
1dB steps,
PD, August 2008, Rev 4.0
1dB steps,
mute
mute
CPGND
HPVP
HPVP
HPVN
HPVN
HPGND
HPINR
LINEOUT1L
LINEOUT2L
LINEOUT1R
HPINL
LINEOUT2R
HPL
HPR
0.47uF
0.47uF
Production Data
2
HPGND