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參數資料
| 型號： | QT118H |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CHARGE-TRANSFER TOUCH SENSOR |
| 中文描述： | 電荷轉移觸摸傳感器 |
| 文件頁數： | 1/13頁 |
| 文件大?。?/td> | 436K |
| 代理商： | QT118H |
APPLICATIONS -
Elevator buttons
Toys & games
Access systems
Pointing devices
Appliance control
Security systems
Light switches
Industrial panels
The QT118H charge-transfer (“QT’”) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will
project a sense field through almost any dielectric, like glass, plastic, stone, ceramic, and most kinds of wood. It can also turn
small metal-bearing objects into intrinsic sensors, making them respond to proximity or touch. This capability coupled with its
ability to self calibrate continuously can lead to entirely new product concepts.
It is designed specifically for human interfaces, like control panels, appliances, toys, lighting controls, or anywhere a mechanical
switch or button may be found; it may also be used for some material sensing and control applications provided that the presence
duration of objects does not exceed the recalibration timeout interval.
The IC requires only a common inexpensive capacitor in order to function. A bare piezo beeper can be connected to create a
‘tactile’ feedback clicking sound; the beeper itself then doubles as the required external capacitor, and it can also become the
sensing electrode. An LED can also be added to provide visual sensing indication. With a second inexpensive capacitor the device
can operated in 2-wire mode, where both power and signal traverse the same wire pair to a host. This mode allows the sensor to
be wired to a controller with only a twisted pair over a long distances.
Power consumption is under 20
μ
A in most applications, allowing operation from Lithium cells for many years. In most cases the
power supply need only be minimally regulated.
The IC’s RISC core employs signal processing techniques pioneered by Quantum; these are specifically designed to make the
device survive real-world challenges, such as ‘stuck sensor’ conditions and signal drift. Even sensitivity is digitally determined and
remains constant in the face of large variations in sample capacitor Cs and electrode Cx. No external switches, opamps, or other
analog components aside from Cs are usually required.
The device includes several user-selectable built in features. One, toggle mode, permits on/off touch control, for example for light
switch replacement. Another makes the sensor output a pulse instead of a DC level, which allows the device to 'talk' over the
power rail, permitting a simple 2-wire interface. The Quantum-pioneered HeartBeat signal is also included, allowing a host
controller to monitor the health of the QT118H continuously if desired. By using the charge transfer principle, the IC delivers a
level of performance clearly superior to older technologies in a highly cost-effective package.
lq
1999-2000 Quantum Research Group
R1.03 / 0302
lQ
QProx
QT118H
C
HARGE
-T
RANSFER
T
OUCH
S
ENSOR
Sns2
Vss
Sns1
Gain
Opt2
Opt1
Out
Vdd
1
2
3
4
5
6
7
8
Q
-
QT118H-IS
-40
0
C to +85
0
C
QT118H-D
QT118H-S
0
0
C to +70
0
C
8-PIN DIP
SOIC
T
A
AVAILABLE OPTIONS
Less expensive than many mechanical switches
Projects a ‘touch button’ through any dielectric
Turns small objects into intrinsic touch sensors
100% autocal for life - no adjustments required
Only one external part required - a 1￠ capacitor
Piezo sounder direct drive for ‘tactile’ click feedback
LED drive for visual feedback
3V 20
μ
A single supply operation
Toggle mode for on/off control (strap option)
10s or 60s auto-recalibration timeout (strap option)
Pulse output mode (strap option)
Gain settings in 3 discrete levels
Simple 2-wire operation possible
HeartBeat health indicator on output
相關PDF資料 |
PDF描述 |
|---|---|
| QT118H-D | CHARGE-TRANSFER TOUCH SENSOR |
| QT118H-IS | CHARGE-TRANSFER TOUCH SENSOR |
| QT118H-S | CHARGE-TRANSFER TOUCH SENSOR |
| QT160 | 6 KEY CHARGE TRANSFER QTOUCH SENSOR IC |
| QT161 | 6 KEY CHARGE TRANSFER QTOUCH SENSOR IC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| QT118HA-ISG | 功能描述:接口 - 專用 Qtouch IC RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| QT118H-D | 功能描述:SENSOR IC TOUCH/PROXMTY 1CH 8DIP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 觸摸屏控制器 系列:QProx™ 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數/鍵:- 分辨率（位）:- 評估套件:* 數據接口:- 數據速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| QT118H-DG | 功能描述:IC SENSOR TOUCH/PROX 1CHAN 8DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 觸摸屏控制器 系列:QProx™ 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數/鍵:- 分辨率（位）:- 評估套件:* 數據接口:- 數據速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| QT118H-G | 制造商:QUANTUM 制造商全稱:QUANTUM 功能描述:CHARGE-TRANSFER TOUCH SENSOR |
| QT118H-IG | 制造商:QUANTUM 制造商全稱:QUANTUM 功能描述:CHARGE-TRANSFER TOUCH SENSOR |
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