A 45-dB, 150-Hz, and 18-mW Touch Controller for On-Cell Capacitive TSP Systems

A 45-dB, 150-Hz, and 18-mW Touch Controller for On-Cell Capacitive TSP Systems

A touch controller is proposed for on-cell capacitive touch screen panel systems, which adopts a newly proposed peaking noise detector and low-frequency rejection filters. Implemented in a 0.35-μmCMOS, the proposed touch controller with 3.3-V drive signal shows the maximum signal-to-noise ratio and...

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Veröffentlicht in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2014-10, Vol.61 (10), p.748-752
Hauptverfasser: Jang, Yeong-Shin, Ko, Young-Hun, Choi, Jung-Min, Oh, Hyung-Seog, Lee, Sang-Gug
Format: Artikel
Sprache:eng
Schlagworte:
Capacitance
Charge transfer
Circuits
CMOS
Control systems
Dynamic range
Finite impulse response filters
Noise
Noise levels
Rejection
Sensors
Signal to noise ratio
Touch
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container_issue 10
container_start_page 748
container_title IEEE transactions on circuits and systems. II, Express briefs
container_volume 61
creator Jang, Yeong-Shin
Ko, Young-Hun
Choi, Jung-Min
Oh, Hyung-Seog
Lee, Sang-Gug
description A touch controller is proposed for on-cell capacitive touch screen panel systems, which adopts a newly proposed peaking noise detector and low-frequency rejection filters. Implemented in a 0.35-μmCMOS, the proposed touch controller with 3.3-V drive signal shows the maximum signal-to-noise ratio and scan rate of 45 dB and 150 Hz, respectively, while consuming 18 mW from a 3.3-V supply.
doi_str_mv 10.1109/TCSII.2014.2345292
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subjects Capacitance
Charge transfer
Circuits
CMOS
Control systems
Dynamic range
Finite impulse response filters
Noise
Noise levels
Rejection
Sensors
Signal to noise ratio
Touch
title A 45-dB, 150-Hz, and 18-mW Touch Controller for On-Cell Capacitive TSP Systems
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