A 6.3 mW High-SNR Frame-Rate Scalable Touch Screen Panel Readout IC with Column-Parallel Σ-Δ ADC Structure for Mobile Devices

被引：0

作者：

Park, Jun-Eun ^{[1
]}

Lim, Dong-Hyuk ^{[2
]}

Jeong, Deog-Kyoon ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Elect & Comp Engn, Seoul, South Korea

[2] Samsung Elect, Yanjin, South Korea

来源：

PROCEEDINGS OF THE 2013 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC) | 2013年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a capacitive touch screen panel (TSP) readout IC that provides highly enhanced signal-to-noise ratio (SNR) and scalable frame rate. To increase touch sensitivity and noise immunity, the proposed readout IC employs a differential sensing method. A column-parallel incremental sigma-delta (Sigma-Delta) ADC structure is adopted to obtain high frame rate and its scalability. The readout IC is fabricated in 0.18-mu m CMOS process and its active area is 2.2 mm(2). The measured results show that the readout IC achieves 60-dB SNR and 200-Hz frame rate with 12 x 8 mutual capacitive TSP. The frame rate and SNR can be adjusted from 50 Hz to 1.6 kHz and from 50 dB to 67 dB, respectively. The power consumption is 6.3 mW with 3.3-V supply.

引用

页码：357 / 360

页数：4

共 2 条

[1] A Reconfigurable 40-to-67 dB SNR, 50-to-6400 Hz Frame-Rate, Column-Parallel Readout IC for Capacitive Touch-Screen Panels
Park, Jun-Eun
Lim, Dong-Hyuk
Jeong, Deog-Kyoon
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2014, 49 (10) : 2305 - 2318
[2] 72 dB SNR, 240 Hz Frame Rate Readout IC With Differential Continuous-Mode Parallel Architecture for Larger Touch- Screen Panel Applications
Heo, Sanghyun
Ma, Hyunggun
Song, Joohyeb
Park, Kyoungmin
Choi, Eun-Ho
Kim, Jae Joon
Bien, Franklin
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2016, 63 (07) : 960 - 971

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