WM8181 查看數據表（PDF） - Wolfson Microelectronics plc
零件编号
产品描述 (功能)
生产厂家
WM8181 Datasheet PDF : 14 Pages
| |||
WM8181
Advanced Information
PIN CONFIGURATION
AGND1
1
16
AVDD
ORDERING INFORMATION
DEVICE
XWM8181CDW
TEMP. RANGE
0 to 70oC
PACKAGE
16-pin SOIC wide
body
AGND2
2
VREFIN
3
15
DVDD
14
DOUT
VINP
4
13
MCLK
VINM
5
VRB
6
12
VSMP
11
CLAMP
VRT
7
NC
8
10
DGND
9
NC
PIN DESCRIPTION
PIN NAME
TYPE
DESCRIPTION
1
AGND1
Ground
General analogue ground (0V).
2
AGND2
Ground
Reference analogue ground (0V).
3 VREFIN Analogue input Allows external control of the ADC references.
4
VINP
Analogue input Positive video input
5
VINM
Analogue input Negative video input
Usually one of VINP or VINM will be an externally
applied d.c. bias, the other will be a signal voltage.
6
VRB
Analogue output Lower reference voltage. This pin must be connected to AGND and VRT via
decoupling capacitors. See Recommended External Components section for details.
7
VRT
Analogue output Upper reference voltage. This pin must be connected to AGND and VRB via
decoupling capacitors. See Recommended External Components section for details.
8
NC
No internal connection
9
NC
No internal connection
10
DGND
Ground
Digital ground (0V).
11 CLAMP
Digital input
Connects VINP and VINM together, active high.
12
VSMP
13
MCLK
Digital input
Digital input
Video sample synchronisation pulse, at input pixel rate. Sampled on rising edge of
MCLK. See Operational Timing Diagrams for details.
Master clock. This clock can be applied at either 12 or 16 times the input pixel rate.
14
DOUT
Digital output ADC serial data output, changes on falling edge of MCLK.
15
DVDD
Supply
Digital supply (3.3V, 5V).
16
AVDD
Supply
Analogue supply (3.3V, 5V).
POSSIBLE POWER SUPPLY COMBINATIONS
COMBINATION
1
2
3
AVDD (VOLTS)
5
3.3
5
DVDD (VOLTS)
5
3.3
3.3
WOLFSON MICROELECTRONICS LTD
AI Rev 3.0 January 2000
2
Share Link: 