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WM8912 Scheda tecnica(PDF) 7 Page - Wolfson Microelectronics plc

Il numero della parte WM8912
Spiegazioni elettronici  Ultra Low Power DAC with Headphone Driver for Portable Audio Applications
PDF  128 Pages
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Produttore elettronici  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8912 Scheda tecnica(HTML) 7 Page - Wolfson Microelectronics plc

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Production Data
WM8912
w
PD, Rev 4.0, September 2010
7
PIN DESCRIPTION
NAME
QFN-32
TYPE
DESCRIPTION
IRQ/GPIO1
1
Digital Input / Output
GPIO1 / Interrupt
SCLK
2
Digital Input
Control interface clock input
SDA
3
Digital Input / Output
Control interface data input / output
DBVDD
4
Supply
Digital buffer supply (powers audio interface and control
interface)
DGND
5
Supply
Digital ground (return path for DCVDD and DBVDD)
DCVDD
6
Supply
Digital core supply
CPVDD
7
Supply
Charge pump power supply
CPCA
8
Analogue Input
Charge pump flyback capacitor pin
CPGND
9
Supply
Charge pump ground
CPCB
10
Analogue Input
Charge pump flyback capacitor pin
CPVOUTP
11
Analogue Output
Charge pump positive supply decoupling (powers
HPOUTL/R, LINEOUTL/R)
CPVOUTN
12
Analogue Output
Charge pump negative supply decoupling (powers
HPOUTL/R, LINEOUTL/R)
HPOUTL
13
Analogue Output
Left headphone output (line or headphone output)
HPOUTFB
14
Analogue Output
Headphone output ground loop noise rejection feedback
HPOUTR
15
Analogue Output
Right headphone output (line or headphone output)
LINEOUTL
16
Analogue Output
Left line output 1 (line output)
LINEOUTFB
17
Analogue Output
Line output ground loop noise rejection feedback
LINEOUTR
18
Analogue Output
Right line output 1 (line output)
DNC
19
n/a
Do Not Connect
DNC
20
n/a
Do Not Connect
VMIDC
21
Analogue Output
Midrail voltage decoupling capacitor
AGND
22
Supply
Analogue power return
AVDD
23
Supply
Analogue power supply
DNC
24
n/a
Do Not Connect
DNC
25
n/a
Do Not Connect
DNC
26
n/a
Do Not Connect
DNC
27
n/a
Do Not Connect
MCLK
28
Digital Input
Master clock for DAC
BCLK/GPIO4
29
Digital Input / Output
Audio interface bit clock / GPIO4
LRCLK
30
Digital Input / Output
Audio interface left / right clock
DNC
31
n/a
Do Not Connect
DACDAT
32
Digital Input
DAC digital audio data
GND_PADDLE
33
Die Paddle
Note:
It is recommended that the QFN ground paddle is connected to analogue ground on the application PCB.



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