Datasheet

AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 64 Preliminary  2009-2012 Microchip Technology Inc.
APPENDIX B:
Modifying, removing or adding components may
adversely affect touch performance.
Specific manufacturers and part numbers are provided
only as a guide. Equivalents can be used.
TABLE B-1: BILL OF MATERIALS
Label Quantity Value Description Manufacturer Part Number
C1 1 10 uF Capacitor – Ceramic, 10 uF, 20%, 6.3V,
X7R, 0603
AVX 06036D106MAT2A
C2 1 0.1 uF Capacitor – Ceramic, 0.1 uF, 10%, 16V,
X7R, 0603
AVX 0603YC104KAT2A
C3, C4, C5
(1)
2-3 0.01 uF Capacitor – Ceramic, 0.01 uF, 10%,
50V, X7R, 0603
AVX 06035C103KAT2A
D1-D8
(2)
4-8 130W Diode – Bidirectional, 130W, ESD
Protection, SOD323
NXP PESD5V0S1BA
R1 1 20 K Resistor – 20 K, 1/10W, 5%, 0603 Yageo America RC0603JR-0720KL
U1 1 N/A Touch controller IC Microchip AR1011 or AR1021
Note 1: C5 is only needed for 5-wire applications.
2: D1-D8 are for ESD protection.
- 4-wire touch screen, use D1-D4
- 5-wire touch screen, use D1-D5
- 8-wire touch screen, use D1-D8
See Section 3.8 “ESD Considerations” and Section 3.9 “Noise Considerations” for important information
regarding the capacitance of the controller schematic hardware.