wm8904 Wolfson Microelectronics plc, wm8904 Datasheet - Page 2

• Manufacturer Part Number: wm8904
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8904
BLOCK DIAGRAM
w
IN1R/DMICDAT2
IN1L/DMICDAT1
1µF
1µF
MICBIAS
MICVDD
IN3R*
IN3L*
IN2R
IN2L
DIGITAL MIC
INTERFACE
M
U
X
M
U
X
Reference
VMID
PGA
PGA
INTERFACE
CONTROL
ADC
ADC
TDM SUPPORT
DYNAMIC RANGE
DIGITAL VOLUME
INTERFACE
DIGITAL MONO
WM8904
CONTROLLER
DIGITAL SIDE
TONE MIXING
EQUALISER
CONTROL
AUDIO
5-BAND
(DRC)
MIX
DAC
DAC
CIRCUITRY
CLOCK
FLL /
REFERENCED OUTPUTS
CHARGE PUMP
CLASS-W GROUND-
ADAPTIVE
M
U
X
M
U
X
M
U
X
M
U
X
2.2µF
Product Brief, Rev 3.0, February 2010
HPOUTL
HPOUTFB
HPOUTR
LINEOUTL
LINEOUTFB
LINEOUTR
CPVOUTN
CPVOUTP
Note:
* these pins are not available in
the 32-pin QFN package variant
2×30mW into 16Ω
ground-referenced
Class-W
Pre-Production
2