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900844 bảng dữ liệu(PDF) 89 Page - Freescale Semiconductor, Inc

tên linh kiện 900844
Giải thích chi tiết về linh kiện  Integrated Power Management IC for Ultra-mobile and Embedded Applications
PDF  118 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

900844 bảng dữ liệu(HTML) 89 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
89
900844
FUNCTIONAL DEVICE OPERATION
ADC SUBSYSTEM
The ADC will be used for sensing the current through select voltage regulators, touch screen support, PMIC thermal sensor,
battery voltage, current, and temperature.
Figure 49 is a representation of the ADC block.
Figure 49. ADC Block Representation
INPUT SELECTOR
The ADC has 22 input channels selected through the ADSEL[4:0] bits in the ADCADDRx register. Table 57 gives an overview
of the characteristics of each of these channels.
Table 57. ADC Inputs
Channel
SELECT[4:0]
ADC Input Signal
Input Level
Scaling
Scaled Version
0
00000
PMIC Die Temperature
1.2 – 2.4 V
x1
1.2 – 2.4 V
1
00001
VCC Current Sense
0 – 2.4 V
x1
0 – 2.4 V
2
00010
VNN Current Sense
0 – 2.4 V
x1
0 – 2.4 V
3
00011
VCC180 Current Sense
0 – 2.4 V
x1
0 – 2.4 V
4
00100
Reserved
Reserved
Reserved
Reserved
5
00101
Reserved
Reserved
Reserved
Reserved
6
00110
Input voltage (VBAT)
0 – 4.8 V
/2
0 – 2.4 V
7
00111
Reserved
Reserved
Reserved
Reserved



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