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MGC3140 Datasheet(PDF) 35 Page - Microchip Technology

Part # MGC3140
Description  MGC3140 3D Tracking and Gesture Controller Data Sheet
PDF  49 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MGC3140 Datasheet(HTML) 35 Page - Microchip Technology

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8.5
Reference Schematic
North Electrode
South Electrode
Center Electrode
VDD
10 KΩ
10 KΩ
10 KΩ
10 KΩ
IS1
IS2
VDD
VDD
n.p: not populated
IS1
IS2
SDA
SCL
GPIO/IRQ
HOST
RESET
CONTROL
MCLR
MCLR
VDD VDD
VDD
VDD
IS2 IS1
Mode (Address)
I2C Slave Address 1 (0x42)
Reserved
0
1
0
0
TX Electrode
VDD
VDD
TX4
R0 = 1K 1)
R1 = 4.7K 1)
R2 = 4.7K 1)
R3 = 1K 1)
R4 = 4.7K 1)
TX1
TX0
TX2
TX3
TX4
Gesture Port 5
SYNC
DNC
RX1
DNC
DNC
MCLR
VSS
VDD
IS1
IS2
RX2
1
2
3
4
5
6
7
8
9
10
11
12
DNC
DNC
VSS
TS
MODE
VDD
SCL
SDA
TX4
TX3
TX2
TX1
36
35
34
33
32
31
30
29
28
27
26
25
10 KΩ
1
) Specific values should be reviewed with your Microchip representative.
10 μF
C1 = 470pF 1)
MGC3140-E/MV
Test Point
TX3
TX2
TX1
MODE
GP5
SYNC
VDD
8.6
Layout Recommendation
This section provides a brief description of layout hints for a proper system design.
The PCB layout requirements for MGC3140 follow the general rules for a mixed signal design. In
addition, there are certain requirements to be considered for the sensor signals and electrode feeding
lines.
The chip should be placed as close as possible to the electrodes to keep their feeding lines as short as
possible. Furthermore, it is recommended to keep MGC3140 away from electrical and thermal sources
within the system.
A two layer PCB layout is sufficient to enable analog and digital signals to be separated from each other
to minimize crosstalk.
The individual electrode feeding lines should be kept as far as possible apart from each other. VDD lines
should be routed as wide as possible.
MGC3140 requires a proper ground connection on all VSS pins which can be connected together.
MGC3140
Application Architecture
© 2018 Microchip Technology Inc.
DS40002037A-page 35



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