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WM8950 bảng dữ liệu(PDF) 4 Page - Wolfson Microelectronics plc

tên linh kiện WM8950
Giải thích chi tiết về linh kiện  ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
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WM8950
Preliminary Technical Data
w
PTD Rev 2.1 June 2005
4
PIN DESCRIPTION
PIN NO
NAME
TYPE
DESCRIPTION
1
MICBIAS
Analogue Output
Microphone bias
2
AVDD
Supply
Analogue supply (feeds ADC)
3
AGND
Supply
Analogue ground (feeds ADC)
4
DCVDD
Supply
Digital core supply
5
DBVDD
Supply
Digital buffer (input/output) supply
6
DGND
Supply
Digital ground
7
ADCDAT
Digital Output
ADC digital audio data output
8
TP
Test Pin
Connect to ground
9
FRAME
Digital Input / Output
ADC sample rate clock or frame synch
10
BCLK
Digital Input / Output
Digital audio bit clock
11
MCLK
Digital Input
Master clock input
12
CSB/GPIO
Digital Input / Output
3-Wire MPU chip select or general purpose input/output pin.
13
SCLK
Digital Input
3-Wire MPU clock Input / 2-Wire MPU Clock Input
14
SDIN
Digital Input / Output
3-Wire MPU data Input / 2-Wire MPU Data Input
15
MODE
Digital Input
Control interface mode selection pin.
16
DNC
Do not connect
Leave this pin floating
17
DNC
Do not connect
Leave this pin floating
18
AGND2
Supply
Analogue ground
19
DNC
Do not connect
Leave this pin floating
20
AVDD2
Supply
Analogue supply
21
AUX
Analogue Input
Auxiliary analogue input
22
VMID
Reference
Decoupling for midrail reference voltage
23
MICN
Analogue Input
Microphone negative input
24
MICP
Analogue Input
Microphone positive input (common mode)
Note:
It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.



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