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WM8581 Datasheet(PDF) 74 Page - Wolfson Microelectronics plc

Part # WM8581
Description  Multichannel CODEC with S/PDIF Transceiver
PDF  100 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8581 Datasheet(HTML) 74 Page - Wolfson Microelectronics plc

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WM8581
Production Data
w
PD Rev 4.0 April 2007
74
Figure 35 Typical Power up sequence where DVDD is powered before AVDD
Figure 36 Typical Power up sequence where AVDD is powered before DVDD
SYMBOL
MIN
TYP
MAX
UNIT
Vpora
0.5
0.7
1.0
V
Vporr
0.5
0.7
1.1
V
Vpora_off
1.0
1.4
2.0
V
Vpord_off
0.6
0.8
1.0
V
Table 67 Typical POR Operation
In a real application, the designer is unlikely to have control of the relative power up sequence of
AVDD and DVDD. Using the POR circuit to monitor VMID ensures a reasonable delay between
applying power to the device and Device Ready.



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