CXTC8922L是一个触摸板探测器IC，提供一个触摸键。触摸传感器的内置调节器。稳定的传感方法可以覆盖多样性条件。触摸检测芯片的设计是为了取代传统的直接按键与不同的垫大小。低功耗和宽工作电压是直流或交流应用的主要特点
z工作电压2.4V~5.5V
z触摸传感器内置调节器
z内置低压复位（LVR）功能
z工作电流，@VDD=3V低功率模式下空载，典型值2.5uA，最大值5uA
z在低功率模式下，响应时间最长约为220mS@VDD=3V
z灵敏度可由外部电容（1~50pF）调节
z稳定人体接触检测取代传统的直接开关钥匙
z提供低功率模式
z提供直接输出或按管脚切换输出选择选项（TOG管脚）
z Q引脚为CMOS输出，可按引脚选择有源高电平或有源低电平（AHLB引脚）
z通电后有0.5秒左右的稳定时间，在此期间不要触碰键盘，且该功能被禁用
z终身自动校准重新校准周期约为通电后8秒内的1秒。当钥匙在8秒内被触摸或钥匙在通电后未被触摸超过8秒时，重新校准周期变为4秒
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[ CXTC8922L ]"
目录
7.相关产品
产品概述 返回TOP
The CXTC8922B TonTouchTM is a touch pad detector IC which offers 1 touch key. The device built-in regulator for touch sensor. Stable sensing method can cover diversity conditions. The touching detection IC is designed for replacing traditional direct button key with diverse pad size. Low power consumption and wide operating voltage are the contact key features for DC or AC application
产品特点 返回TOP
z Operating voltage 2.4V ~ 5.5V
z Built-in regulator for touch sensor
z Built-in low voltage reset (LVR) function
z Operating current, @VDD=3V no load At low power mode typical 2.5uA, maximum 5uA
z The response time max about 220mS at low power mode @VDD=3V
z Sensitivity can adjust by the capacitance（1~50pF）outside
z Stable touching detection of human body for replacing traditional direct switch key
z Provides Low Power mode
z Provides direct output or toggle output selection by pin option (TOG pin)
z Q pin is CMOS output can be selected active high or active low by pin option (AHLB pin)
z After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and the function is disabled
z Auto calibration for life The re-calibration period is about 1 sec within 8 sec after power-on. When key has been touched within 8 sec or key has not been touched more than 8 sec after power-on, then the re-calibration period change to 4 sec
应用范围 返回TOP
z Wide consumer products
z Button key replacement
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品......
| 触摸按键IC | ||||||
| 型号 | 工作电压 | 工作电流 | 按键数 | 响应时间 | 封装 | 应用领域 |
| CXTC8922 | 2.0V-5.5V | 1.5uA | 1键 | 40mS | SOT-26 | 最大按键开启时间75s,家电照明各类电子产品 |
| CXTC8922B | 2.4-5.5V | 2.5uA | 1键 | 220mS | SOT-26 | 禁止最大按键开启时间，需长按键电子产品 |
| CXTC8922L | 2.0V-5.5V | 1.5uA | 1键 | 40mS | SOT-26 | 带10s自恢复功能，移动电源专用 |
| CXTC8923 | 2.0V-5.5V | 8uA | 2键 | 60mS | SOP8 | 家电/照明等各类电子产品 |
| CXTC8924 | 2.5V-5.5V | 4.3uA | 6键 | 32mS | SOP-16 | 家电/照明等各类电子产品 |
| CXTC8925 | 2.0V-5.5V | 5uA | 8/16键 | 32mS | SSOP-28 | 家电/照明等各类电子产品 |
| CXTC8926 | 2.0V-5.5V | 7uA | 1键 | 40mS | SOP8/SOT26 | LED台灯，带无级调光/分段调光 |
| CXTC8927 | 3.0V-6.0V | 250uA | 1键 | SOP8/DIP8 | LED台灯，2通道输出，带无级调光 | |
