参数资料
| 型号： | AT42QT1011-MAH |
| 厂商： | Atmel |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | IC SENSR TOUCH/PROX 1CH 8-UDFN |
| 标准包装： | 3,000 |
| 系列： | QTouch™ |
| 类型： | 电容性 |
| 触摸面板接口： | 2 线 |
| 输入数/键： | 1 键 |
| 数据接口： | 串行 |
| 电压基准： | 内部 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 电流 - 电源： | 219µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN 裸露焊盘 |
| 供应商设备封装： | 8-UDFN，USON |
| 包装： | 托盘 |
www.atmel.com/singletouch
3
Standard Features
The following functionality is common to all three ICs in the AT42QT101X family.
Drift Compensation
Drift compensation algorithms constantly adjust the reference level in the device to ensure that the key will remain
calibrated even if there is a large change in background capacitance.
Spread Spectrum Acquisition
The devices modulate their frequency whilst measurements are taken. This has the effect of reducing emission levels
and susceptibility to interference as there is no single burst frequency.
Power Consumption
All the devices have a range of power modes depending on the response time required. The power consumption is
kept to a minimum whatever power mode the device is in. This, combined with the auto-off functionality available on
the QT1012 means that for portable devices, adding capacitive sensing functionality does not significantly impact on
the battery lifetime.
Sensitivity
By careful capacitor selection and key design, the sensitivity of a capacitive button can be set to work with a wide
range of panel thicknesses and materials. As the sensitivity of the key can be varied significantly it is also possible to
use any of the single key devices as proximity sensors. Such functionality can be used in toys or used to illuminate “hid
den until lit” user interfaces.
Calibration
The device will automatically calibrate on power up. If there is an obstruction on the key for a prolonged period, the
sensor will re-calibrate after a set time period (with the exception of the QT1011, which will indicate a touch condition
as long as the sensor is “in detect”). This ensures that the device will detect a new touch correctly.
Detection
In order for the sensors to only go active on intended touches, the ICs include signal processing which helps to
suppress detections caused by electrical noise and quick brushes with the surface.
nPower switches
nHearing aids
nIsolated buttons/sensors
nChildren’s toy
nTimers
nProximity sensors
Typical Applications
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PDF描述 |
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| BA2901FV-E2 | IC COMPARATOR QUAD 0.8MA SSOP14 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT42QT1011-MAHR | 功能描述:IC SENSR TOUCH/PROX 1CH 8-UDFN 制造商:microchip technology 系列:QTouch?? 包装:剪切带（CT） 零件状态:在售 类型:按钮 接近探测:是 输入数:1 LED 驱动器通道:- 接口:- 分辨率:14 b 电压 - 电源:1.8 V ~ 5.5 V 电流 - 电源:378.5μA 工作温度:-40°C ~ 85°C 封装/外壳:8-UFDFN 裸露焊盘 供应商器件封装:8-UDFN，USON 标准包装:1 |
| AT42QT1011-TSHR | 功能描述:电容触摸传感器 One-Channel Touch Sensor IC RoHS:否 制造商:Microchip Technology 电源电压: 通道数量: 封装 / 箱体: 尺寸: 温度范围: |
| AT42QT1011-TSHR QS447 | 制造商:Atmel Corporation 功能描述:Touch Sensor IC 6-Pin SOT-23 |
| AT42QT1012 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:One-channel Toggle-mode Touch Sensor IC with Power Management Functions |
| AT42QT1012_10 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:One-channel Toggle-mode Touch Sensor IC with Power Management Functions |
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