【成功案例】SNR达270:1的高抗噪电容触控解决方案

时间： 2019-09-05 来源：世强作者：summer

技术问答

随着科技的不断进步，工业电子类产品也越来越注重产品美观和用户体验，人机交互无疑是最直观的改变，从最初的简单机械开关到触摸开关，从电阻式触摸到电容式触摸，都在时刻改变着人机交互体验。

工程师们，你们在用什么人机交互开关？像这样传统的机械按键？

图1机械按键

还是防水防腐蚀更好一些的薄膜按键？

图2薄膜按键

还是具有高抗噪更灵敏更炫酷的电容式触摸按键？

图3电容触摸按键

三种方式各有优缺点：

●机械按键：优点是价格低，使用简单；缺点是其使用寿命短的，易腐蚀，体积大。

●薄膜按键：优点是价格低，有保护层隔绝，具有良好的抗腐蚀能力，缺点是使用寿命较短。

●电容触摸按键：优点是使用寿命长，无噪音，可完全隔绝空气使用，可以做到完全抗腐蚀，灵敏度更高。缺点是电容型的触控开关容易受到外界电磁干扰。

自己曾经做过的智能型人体静电释放报警仪的项目，由于设备长期使用在户外，并且采用电池供电，并且需要进行灌胶处理。

项目初始方案：

设备功能按键采用薄膜按键方案，如下图所示，此方案功能正常，但是由于采用灌胶工艺，接口处容易进胶导致按键失效，次品率较高。排线材质为银浆，在潮湿环境下容易腐蚀，并且薄膜按键使用次数有限，长期使用容易损坏。

图4 薄膜按键实物图

图5薄膜按键应用图

项目优化方案：

采用SILICON LABS推出的高抗噪电容触控芯片 CPT007B，将触控芯片和电路板直接胶封在壳体内部，电路板无外露，不用担心腐蚀问题，不用担心长期使用按键机械损耗而造成失效的问题。

图6电容触摸按键应用

另外CPT007B还有以下优点：

●超低功耗：工作电流低至200μA，休眠电流<1μA（适用于电池长期供电，本产品采用4000mAh锂电池寿命长达10年以上）；

●抗干扰能力强：SNR为270：1可以轻松躲避公频干扰；

●多达7路电容传感器输入（CPT112S为I2C接口12路输入）可直接驱动蜂鸣器和LED灯；

●很强的环境适应能力，防潮防腐蚀；

●外形尺寸小（3mm×3mm封装）更好的应用在空间有限的地方。

另外需要注意的是电容触摸板的PCB设计，根据此次项目的设计经验有一些几点需要注意：

1、PCB触摸板尺寸应遵循一下原则（参考介质为亚克力）理论上感应面积越大越灵敏。

2、触摸介质不同需要适当调整PCB板大小（介质常量越大触摸越灵敏）。

3、PCB触摸板的触摸盘正面、背面不铺铺地，灵敏度有较大幅度提升，但同时降低了抗干扰能力。一般建议在保证灵敏度的情况下触摸盘周围铺地，以提高抗干扰能力。

4、PCB触摸板走线尽量细，一般建议10mil以内，走线越宽抗干扰性能越差。

5、PCB触摸板以及走线应尽量远离干扰源，例如开关电源、LED灯源、交流电源、高频信号源。

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全部评论（59）

用户14629492 Lv7. 资深专家 2019-05-20

了解
福如东来 Lv7. 资深专家 2019-04-19

学习了
独一无二No1 Lv7. 资深专家 2019-04-15

学习一下
wch7475 Lv8. 研究员 2019-04-08

学习
Jin Lv8. 研究员 2019-03-25

好东西！

用户83734992 Lv6. 高级专家 2019-02-18

学习
33活在当下 Lv5. 技术专家 2019-02-12

学习了
yingqiming Lv7. 资深专家 2019-01-28

不错
duanmaxie Lv8. 研究员 2019-01-20

学习
小旺 Lv7 2019-01-17

不错的方案

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型号- EFM32GG12B810F1024IL120-A,C8051F974-A-GMR,EFR32MG12P432F1024GM48-BR,C8051F381-GQR,ZGM130S037HGN2,ZGM130S037HGN1,C8051F38A-B-GQ,EFM8BB31F16I-D-QFP32,EFM8LB12F64ES1-B-QFN32,SI7020-A20-GM,C8051F023-GQ,EFR32BG12P433F1024GL125-CR,SI7210-B-13-IM2R,C8051F587-AM,WF200SCR,EFM8BB31F64G-D-QFP32R,EFM32ZG222F32-QFP48,EFM8BB51F16I-C-QFN20R,EFM8LB11F32ES0-C-QFN24R,EFM8SB20F32G-B-QFN32,EFM8LB12F64E-B-QFN24,C8051F531-C-IM,EZR32HG220F64R61G-C0R,EFM32GG390F1024G-E-BGA112R,C8051F011-GQ,C8051F390-A-GMR,C8051F362-C-GM,C8051F930-G-G1DI,EFM8LB12F64ES1-B-QFN24,EFR32FG12P231F1024GM48-CR,EFR32FG12P431F1024GM68-CR,C8051F531-C-IT,EFM32GG12B330F512GQ100-AR,EZR32HG320F64R68G-B0,BGX13S22GA-V31,EFM8BB31F32I-C-QFP32R,SI4011-C100EGTR,C8051F975-A-GM,CP2201-GMR,WF200SDR,EFR32MG1P232F256GM48-C0,EFR32FG22C121F512GM32-C,EFP0108GM20-E,CP2120-GMR,EFP0107GM20-DR,CP2108-B03-GMR,EFM32G840F64G-E-QFN64,EFP0108GM20-D,EFM32GG12B110F1024IM64-A,EFM32GG12B110F1024GQ64-A,EFR32MG13P733F512GM48-DR,BGX220S22HNA21R,EFM32GG230F1024G-E-QFN64R,C8051F125-GQ,EFM8UB20F64G-B-QFP48R,EFM8LB12F32ES0-C-QFN32R,EFR32MG22C224F512GN32-CR,C8051F553-AMR,EFR32FG23B020F128GM40-B,EFM8BB31F16I-C-QFN24R,EFR32MG13P732F512GM32-CR,SI1034-B-GM3,C8051F801-GU,EFM8BB31F16I-B-QSOP24,C8051F124-GQR,SIM3C167-B-GQ,EFR32MG13P733F512GM48-CR,C8051F802-GUR,SIM3C167-B-GM,EFR32MG12P432F1024GM48-CR,C8051F043-GQR,EFM32WG880F256-B-QFP100,C8051F300-E-GDI,EFM8BB51F8G-C-QFN20,SI4355-B1A-FM,EFM8LB11F16ES0-C-QFN24R,EFM8SB20F32G-B-QFN24,EFR32MG12P332F1024GM48-CR,EZR32HG220F64R69G-C0,EFR32FG1V232F256GM32-C0R,C8051F360-C-GQR,EFR32BG22C222F352GM40-CR,EFM32JG1B200F256GM32-C0,CP2102N-A01-GQFN20R,EFR32BG12P432F1024GM48-C,EFR32FG1V032F128GM32-C0,SI1012-C-GM2,C8051F133-GQR,C8051F230-GQR,EFM32HG110F64G-C-QFN24R,SI1152-AB00-GM,SI4432-B1-FMR,EFM32GG11B320F2048GL112-BR,EFM8SB20F32G-B-QFN24R,SI1175E2-B2-GM,EM3587-RTR,C8051F302-GMR,C8051F963-B-GM,EFR32FG23B010F512IM40-B,CP2615-A02-GM,EFM8LB11F32ES1-C-QFN32R,C8051F563-IM,SI4060-B1B-FM,C8051F047-GQ,C8051F531A-ITR,EFR32BG1P333F256GM48-C0,C8051F563-IQ,EFM32ZG110F32-B-QFN24,WF200CR,EFR32MG13P732F512GM32-DR,ZGM130S037HGN1R,EZR32HG220F64R67G-B0,EFM8BB31F32I-C-5QFN32R,EM260-RTR,C8051F310-GQ,C8051F863-C-GS,CPT112S-A02-GMR,EFM32LG230F64G-F-QFN64R,RS14100-SB00110F-B00-X16,SI4362-B1B-FM,SI4421-A1-FT,EFM8SB10F2G-A-QFN20R,EFR32FG12P432F1024GM48-C,EFM32LG230F256G-E-QFN64,C8051F854-C-GM,C8051F921-G-GMR,C8051F365-C-GMR,SI1141-A11-GMR,WF200DR,C8051F369-C-GM,SIM3C156-B-GMR,ZGM130S037HGN2R,SIM3U144-B-GM,SI1082-A-GM,EFM8BB31F32G-C-QSOP24,EFM32PG1B200F128GM48-C0,EFR32MG21A020F768IM32-BR,EFM8UB31F40G-A-QFN24R,C8051F901-D-GMR,EFR32BG1P233F256GM48-C0R,EFM8BB31F64G-C-QFP32,EFR32BG12P232F512GM68-CR,SI1171I3-B2-GM,C8051F502-IM,C8051F575-IM,SI7023-A20-YM1R,EFR32FG1V032F128GM32-C0R,C8051F502-IQ,EFM8LB11F32E-B-QFN24R,EFR32MG12P432F1024GM68-CR,EFM32LG280F256G-F-QFP100,EFR32FG13P231F512GM48-DR,EZR32WG230F128R60G-C0R,C8051F921-G-GM,SI1063-A-GMR,EFM32LG880F256G-F-QFP100,SI1141-A11-GM,EFR32FG12P231F1024GM68-CR,EZR32LG230F128R63G-C0R,EFM8LB10F16ES1-C-QFN24R,EFM8BB31F64I-B-QFP32,EFR32FG12P431F1024IM48-C,C8051F587-IM,C8051F320-GQR,EFR32BG13P632F512GM48-D,EFR32BG13P632F512GM48-C,C8051F587-IQ,EFR32FG12P433F1024GM48-CR,SI7007-A20-IM1R,EFM32GG11B820F2048GQ100-B,EFM8BB31F64I-D-QFN32R,C8051F530-C-ATR,C8051F531A-IT,EFR32BG12P232F1024GM48-C,EFM32TG108F16-D-QFN24R,SI1005-E-GM2R,EFM32GG11B310F2048GQ100-BR,EFM32TG110F32-QFN24T,C8051F043-GQ,EFM32JG1B100F128GM32-C0R,EFR32MG12P132F1024GM48-CR,SI4356-B1A-FMR,EZR32HG320F64R69G-C0R,C8051F531A-IM,SIM3C144-B-GM,EFR32MG12P232F1024GM48-BR,EFM32GG940F1024G-E-QFN64,EFM32JG1B200F128GM48-C0,SI7201-B-05-IV,SI1064-A-GM,EFR32FG14P231F128GM32-BR,EFM32GG12B130F512GM64-A,SI1175I3-B2-GMR,C8051F300-GMR,C8051F041-GQR,SI7204-B-00-FVR,EFR32MG12P232F1024GM48-CR,EFM8UB10F16G-C-QFN28,EZR32HG220F64R67G-C0,SI4420-D1-FT,EFM8BB31F32I-D-4QFN24R,SI7201-B-86-IV,EFM8BB31F64G-C-QFN24R,EFM8UB10F16G-C-QFN20,EFM8BB31F32G-B-QFN32,C8051F985-C-GM,C8051F981-C-GMR,EM357-RT,EFM32GG995F1024G-E-BGA120R,C8051F544-IQR,EFR32FG1P131F256GM48-C0R,EFM32LG942F256G-F-QFP64R,EFM8BB31F32A-C-5QFN32R,C8051F802-GMR,C8051T614-GQR,RS9116W-SB00-B00-X23,SI7201-B-30-IV,RS9116W-SB00-B00-X24,EFR32MG13P732F512IM32-D,EFM8SB10F2G-A-QFN20,EFR32MG13P732F512IM32-C,C8051T631-GM,EFM8LB12F64ES1-B-QFN32R,EFM8BB31F32G-B-QFN24,SI7005-B-GM1R,EM3585-RTR,EFM32ZG210F32-QFN32,C8051F334-GM,EFM8BB31F16I-B-5QFN32,C8051F122-GQR,C8051F580-AQ,C8051F542-IMR,SI7210-B-01-IV,C8051F580-AM,EFM32GG230F512G-E-QFN64R,EFM32HG110F64G-C-QFN24,C8051F585-IMR,EFR32BG21A010F1024IM32-BR,C8051F990-C-GMR,C8051F508-IMR,C8051F302-GM,SI7211-B-00-IBR,SI1142-M01-GM,EFM8LB12F64ES0-B-QFN24R,C8051F800-GMR,EFM32ZG110F32-QFN24T,EFR32FG23A010F256GM40-BR,EZR32WG230F128R67G-C0R,SI4010-C2-GSR,C8051F302-GS,C8051F531A-IMR,EZR32HG220F32R61G-B0R,C8051F986-C-GMR,EZR32LG330F128R68G-C0,SI4012-C1001GT,EFM8LB12F64E-C-QFN24R,EFM8BB52F32I-C-QFN32R,SIM3C144-B-GMR,EFM8UB20F32G-B-QFP48,EFM32LG232F128G-F-QFP64,C8051F067-GQ,EFR32FG13P231F512GM32-D,EFR32FG13P231F512GM32-C,EFM32TG11B340F64GM64-B,MGM13S02F512GA-V3R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2112141154 Minimum Order Quantity (MOQ) Increase for all IC and SiP Module Products

型号- C8051F521A-IM,SI1061-A-GM,SI1001-E-GM2,ZGM130S037HGN2,C8051F38A-B-GQ,SI7020-A20-GM,C8051F000-GQ,C8051F023-GQ,C8051F920-G-GM,C8051F988-C-GU,C8051F321-GM,C8051F046-GQ,C8051F920-G-GQ,C8051F587-AM,C8051F503-IM,SI7201-B-84-IV,C8051F967-B-GM,C8051F503-IQ,C8051F332-GM,C8051F531-C-IM,C8051F011-GQ,WFM200S022XNN3,C8051F902-D-GU,SI7211-B-00-IV,WFM200S022XNN2,C8051F802-GM,C8051F362-C-GM,SI4022-A0-FT,C8051F531-C-IT,BGM220SC22HNA2,BGX13S22GA-V31,C8051F584-IM,C8051F584-IQ,C8051F975-A-GM,C8051F394-A-GM,SI7005-B-GM1,EFP0108GM20-E,C8051T616-GM,C8051F206-GQ,C8051F802-GU,EFP0108GM20-D,EM3597-RT,C8051F012-GQ,SI4463-C2A-GM,C8051F413-GM,CPT112S-A02-GU,WF200D,WF200C,C8051F125-GQ,C8051F343-GQ,C8051F585-IM,C8051F230-GQ,CPT112S-A02-GM,C8051F585-IQ,SI7210-B-11-IM2,EM3598-RT,C8051F801-GU,SI1034-B-GM3,SIM3C164-B-GM,SI4461-B1B-FM,SI4355-B1A-FM,C8051F345-GQ,C8051F045-GQ,C8051F320-GQ,C8051F398-A-GM,SI7201-B-83-IV,SI4432-B1-FM,SI7022-A20-IM1,SI7201-B-04-IV,SI4438-C2A-GM,SI4455-B1A-FM,C8051F996-C-GM,C8051F38C-GQ,C8051F911-D-GU,SI1012-C-GM2,C8051F996-C-GU,C8051F38C-GM,SI1152-AB00-GM,CF326-SX0261GM,SI1175E2-B2-GM,C8051F911-D-GM,C8051F963-B-GM,C8051F981-C-GM,CP2615-A02-GM,C8051F124-GQ,SI7217-B-01-IV,C8051F563-IM,SI4060-B1B-FM,SI4055-C2A-GM,SI7210-B-12-IM2,C8051F047-GQ,C8051F527A-IM,C8051F001-GQ,C8051F812-GM,SI4421-A0-FT,C8051F563-IQ,CPT213B-A01-GM,C8051F311-GM,C8051F972-A-GM,SI7054-A20-IM,SIM3C146-B-GM,C8051F547-IM,CP2615-A01-GM,SD3503A-CNE3,C8051F310-GQ,SI7211-B-00-IB,C8051F863-C-GS,SI4362-B1B-FM,SI4421-A1-FT,C8051F002-GQ,C8051F854-C-GM,C8051F369-C-GM,C8051F333-GM,SIM3U144-B-GM,SI1082-A-GM,C8051F389-B-GM,EM3585-RT,C8051F013-GQ,C8051F389-B-GQ,C8051F800-GM,SIM3C156-B-GM,SI4063-C2A-GM,C8051F344-GQ,C8051F550-AM,C8051F586-IM,C8051F586-IQ,SI1171I3-B2-GM,C8051F502-IM,C8051F575-IM,C8051F502-IQ,SI7201-B-03-IV,C8051F800-GU,C8051F980-C-GM,SI7023-A20-IM1,C8051F921-G-GM,C8051F312-GQ,C8051F066-GQ,SI1141-A11-GM,SI1143-A11-GM,C8051F587-IM,SI7021-A20-GM,C8051F587-IQ,SI7023-A20-YM1,C8051F335-GM,C8051F500-IQ,SI7204-B-00-FV,SI1153-AB9X-GM,C8051F500-IM,CP2105-F01-GM,C8051F301-GM,EM346-RT,BGM121A256V2,EM250-RT,C8051F363-C-GQ,C8051F347-GQ,C8051F301-GS,C8051F531A-IT,SI4055-B1A-FM,C8051F043-GQ,C8051F531A-IM,SI7210-B-13-IM2,SIM3C144-B-GM,SI7201-B-05-IV,C8051F34B-GQ,C8051F501-IQ,SI1064-A-GM,SI1133-AA00-GM,C8051F501-IM,SIM3C154-B-GM,C8051F300-GM,SI1081-A-GM,C8051F855-C-GM,SI7021-A20-IM,C8051F300-GS,SI4420-D1-FT,SI7201-B-86-IV,C8051F862-C-GS,EM357-RT,C8051F804-GS,C8051F065-GQ,SI4032-B1-FM,SI1014-C-GM2,C8051F382-GQ,SI7201-B-30-IV,SI7201-B-41-IV,CP2400-GM,SI1182-B4-GM,WFM200SS22XNA2,C8051F395-A-GM,C8051F565-IQ,WFM200SS22XNA3,C8051F221-GQ,C8051T631-GM,C8051F020-GQ,C8051T600-GS,CP2400-GQ,C8051F580-AQ,C8051F826-GS,C8051T600-GM,C8051F803-GS,SI7210-B-01-IV,C8051F010-GQ,C8051F580-AM,C8051F530A-IT,C8051F852-C-GU,C8051F545-IQ,C8051F127-GQ,C8051F302-GM,SI1142-M01-GM,C8051F852-C-GM,SI1141-M01-GM,BGM220SC12WGA2,C8051F530A-IM,SI7210-B-14-IM2,SIM3C134-B-GM,SI1084-A-GM,C8051F302-GS,C8051T632-GM,BGM123A256V2,SI4012-C1001GT,C8051F365-C-GM,SI4464-B1B-FM,CP2104-F03-GM,C8051F588-IM,C8051F850-C-GM,C8051F960-B-GQ,CP2201-GM,SI1021-B-GM3,C8051F067-GQ,C8051F380-GQ,CP2110-F01-GM,EM3587-RT,C8051F510-IM,C8051F022-GQ,SI4356-B1A-FM,SI7201-B-85-IV,SI4031-B1-FM,EM3555-RT,C8051F336-GM,C8051F381-GM,CP2200-GQ,C8051F860-C-IS,C8051F397-A-GM,C8051F589-IM,SI7020-A20-IM,C8051F965-B-GM,C8051F381-GQ,EM3588-RT,C8051F346-GQ,C8051F850-C-GU,C8051F021-GQ,C8051F511-IM,SIM3U166-B-GM,C8051F044-GQ,C8051F220-GQ,CP2105P0950FGM,C8051F581-AQ,SI7201-B-40-IV,SI7201-B-06-IV,C8051F970-A-GM,SI4468-A2A-IM,SI7210-B-00-IV,C8051F34A-GQ,CPT212B-A01-GM,CPT007B-A02-GM,C8051F390-A-GM,C8051F544-IQ,C8051F34A-GM,C8051F524A-IM,C8051F850-C-IM,C8051F931-G-GM,SI1181-B3-GM,C8051F126-GQ,SIM3U156-B-GM,C8051F231-GQ,SI7203-B-00-FV,C8051F850-C-IU,C8051F814-GU,C8051F860-C-GS,C8051T610-GQ,SI7005-B-FM1,SI4010-C200RGT,SI4463-C2A-AM,C8051F313-GM,CPT007B-A02-GU,SI7053-A20-IM,SI4021-A1-FT,C8051F533-C-IT,C8051F991-C-GM,SI7021-A20-GM1,EFP0102GM20-E,SI1142-A11-GM,C8051F132-GQ,C8051F350-GQ,C8051F555-IM,SI7210-B-15-IM2,SI7201-B-08-IV,C8051F120-GQ,C8051F384-GQ,C8051F396-A-GM,SI4467-A2A-IM,SI7210-B-02-IV,C8051F063-GQ,C8051F567-IQ,SI1151-AB00-GM,SI4010-C2-GT,EM357-ZRT,SI4010-C2-GS,C8051F567-IM,SI7201-B-32-IV,C8051F326-GM,C8051F508-IM,C8051F360-C-GQ,C8051F861-C-GS,CP2402-GM,BGX220S22HNA21,C8051F005-GQ,C8051F590-IM,CP2130-F01-GM,C8051F315-GM,C8051F543-IM,C8051F314-GQ,C8051F385-GM,SI7022-A20-IM,C8051F385-GQ,C8051F392-A-GM,SI4063-B1B-FM,C8051F509-IM,SI7005-B-FM,SI7007-A20-IM,EFP0107GM20-D,SI1080-A-GM,EFP0107GM20-E,CP2403-GM,C8051F521-C-IM,C8051F006-GQ,C8051F337-GM,SI7201-B-21-IV,SI1002-E-GM2,SI4320-J1-FT1,SIM3U167-B-GM,C8051F040-GQ,SI7202-B-01-IV,C8051F017-GQ,EM3581-RT,C8051F133-GQ,SI4362-C2A-GM,SI4355-C2A-GM,SI1102-A-GM,C8051F582-AM,C8051F367-C-GM,C8051F364-C-GQ,EM357-IRT,SI7201-B-07-IV,C8051F351-GM,C8051F383-GM,EFP0109GM20-D,EFP0109GM20-E,SIM3U154-B-GM,C8051F580-IQ,SI7201-B-10-IV,SI1083-A-GM,C8051F580-IM,C8051F348-GQ,C8051F568-IM,C8051F383-GQ,CP2401-GQ,C8051F961-B-GM,S

产品变更通知及停产信息 - SILICON LABS - Dec 14, 2021 PDF 英文下载

TouchXpress™ Family CPT007B Data Sheet

型号- CPT007B-A02-GM,CPT007B-A02-GMR,CPT007B,CPT007B-A02-GU

数据手册 - SILICON LABS - Rev. 0.2 - August 12th, 2016 PDF 英文下载查看更多版本

2201181164 Drop shipment site change at ASE Chung-Li

型号- C8051F521A-IM,C8051F974-A-GMR,C8051F381-GQR,RS9116N-SB00-B00-B00,SI7020-A20-GM,C8051F920-G-GM,C8051F023-GQ,C8051F920-G-GQ,C8051F587-AM,EFM8BB31F64G-D-QFP32R,EFM8LB11F32ES0-C-QFN24R,EFM8SB20F32G-B-QFN32,C8051F332-GM,C8051F531-C-IM,EZR32HG220F64R61G-C0R,C8051F310-GQR,C8051F011-GQ,C8051F390-A-GMR,C8051F362-C-GM,C8051F132-GQR,C8051F531-C-IT,EFM32GG12B330F512GQ100-AR,C8051F541-IMR,C8051F975-A-GM,CP2201-GMR,EFM32GG11B520F2048GQ100-BR,C8051F394-A-GM,C8051T616-GM,EFM32G840F64G-E-QFN64,EFM8LB11F32ES0-C-QFN24,CPT112S-A02-GU,EFM32GG230F1024G-E-QFN64R,C8051F125-GQ,EFM8UB20F64G-B-QFP48R,EZR32HG320F64R68G-C0R,C8051F585-IM,C8051F230-GQ,CPT112S-A02-GM,C8051F585-IQ,EFM32G230F32G-E-QFN64R,EFM8BB10F2G-A-QFN20,C8051F553-AMR,EM3598-RT,C8051F801-GU,EFM8BB10F2I-A-QFN20R,C8051F124-GQR,SI7054-A20-IMR,C8051F060-GQR,C8051F802-GUR,EFM8BB21F16A-C-QFN20R,EFM8LB12F32ES0-C-QFN24,C8051F043-GQR,SI4461-B1B-FM,EFM32WG880F256-B-QFP100,SI1182-B3-GMR,SI7051-A20-IMR,SI4355-B1A-FM,C8051T604-GSR,C8051F045-GQ,C8051F320-GQ,EFM8LB11F16ES0-C-QFN24R,EFM8SB20F32G-B-QFN24,EZR32HG220F64R69G-C0,EZR32HG320F64R69G-C0,C8051F530A-ITR,EFM32ZG210F32-B-QFN32,C8051F339-GMR,C8051F360-C-GQR,EFM32GG380F512G-E-QFP100R,SI1102-A-GMR,C8051F38C-GQ,EFM32G280F128G-E-QFP100R,SI1012-C-GM2,C8051F133-GQR,C8051F380-GQR,EFM8SB20F32G-B-QFP32,C8051F230-GQR,SI1152-AB00-GM,C8051F38C-GM,EFM8SB20F32G-B-QFN24R,SI1175E2-B2-GM,CF326-SX0261GM,EM3587-RTR,C8051F302-GMR,EFM8SB10F4G-A-QFN20,CP2615-A02-GM,C8051F563-IM,SI4060-B1B-FM,SI4055-C2A-GM,EZR32HG220F64R69G-C0R,C8051F047-GQ,C8051F531A-ITR,C8051F001-GQ,C8051F206-GQR,C8051F563-IQ,EFM32GG12B510F1024IQ100-A,CPT213B-A01-GM,CP2103-GMR,EM260-RTR,EFR32MG21B020F768IM32-BR,C8051F310-GQ,EFM32G880F128G-E-QFP100R,EZR32HG220F64R68G-C0,CPT112S-A02-GMR,C8051F850-C-IMR,EFM32LG230F64G-F-QFN64R,EFM8SB20F64G-B-QFN32R,RS14100-SB00110F-B00-X16,EFM32GG980F1024G-E-QFP100,SI4362-B1B-FM,C8051F301-GMR,EFM8SB10F2G-A-QFN20R,EFM32ZG210F16-B-QFN32,C8051F854-C-GM,C8051F921-G-GMR,C8051F365-C-GMR,SI1141-A11-GMR,C8051F369-C-GM,SI1082-A-GM,C8051F389-B-GM,C8051F389-B-GQ,EFM8UB30F40G-A-QFN20R,EFR32MG21A020F768IM32-BR,SI1000-E-GM2R,C8051F901-D-GMR,SI4063-C2A-GM,C8051F344-GQ,C8051F123-GQR,SI1171I3-B2-GM,EFM32LG230F256G-F-QFN64,C8051F502-IM,C8051F575-IM,SI7023-A20-YM1R,C8051F502-IQ,C8051F550-IMR,EFM32LG280F256G-F-QFP100,SI7023-A20-IM1,C8051F921-G-GM,SI1063-A-GMR,C8051F312-GQ,EFM32LG880F64G-F-QFP100R,EFM32LG880F256G-F-QFP100,SI1141-A11-GM,EFM8LB10F16ES1-C-QFN24R,C8051F587-IM,C8051F320-GQR,C8051F587-IQ,C8051F586-IMR,SI7007-A20-IM1R,C8051F587-IQR,C8051F500-IQ,C8051F500-IM,SI1147-A10-GMR,EFM32GG11B820F2048GQ100-B,C8051F530-C-ATR,C8051F363-C-GQ,C8051F531A-IT,SI1003-E-GM2R,SI4055-B1A-FM,SI1005-E-GM2R,EFM32GG11B310F2048GQ100-BR,C8051F043-GQ,CP2200-GQR,C8051F507-IMR,SI4356-B1A-FMR,EZR32HG320F64R69G-C0R,C8051F531A-IM,EFM32GG940F1024G-E-QFN64,SI1064-A-GM,EFR32BG21A020F1024IM32-BR,SI1175I3-B2-GMR,SI1081-A-GM,C8051F300-GM,C8051F300-GMR,C8051F855-C-GM,SI4461-C2A-GMR,EZR32HG220F64R60G-C0R,C8051F300-GS,EZR32HG220F64R67G-C0,EZR32HG320F64R67G-C0,EFM8UB10F16G-C-QFN20,C8051F981-C-GMR,EM357-RT,C8051F544-IQR,C8051F065-GQ,EFM32LG230F128G-F-QFN64R,C8051F802-GMR,C8051T614-GQR,C8051F220-GQR,EFM8UB20F32G-B-QFN32,C8051F366-C-GQR,C8051F982-C-GMR,EFM8SB10F2G-A-QFN20,C8051F565-IQ,C8051T631-GM,EFR32BG21A010F768IM32-B,C8051T600-GS,EM3585-RTR,C8051F122-GQR,C8051F580-AQ,C8051F542-IMR,C8051T600-GM,C8051F803-GS,C8051F580-AM,EFM32GG230F512G-E-QFN64R,SI4355-C2A-GMR,C8051F530A-IT,C8051F585-IMR,EFR32BG21A010F1024IM32-BR,C8051F990-C-GMR,C8051F508-IMR,C8051F302-GM,C8051F127-GQ,SI1142-M01-GM,EFM32TG840F32-D-QFN64R,C8051F530A-IM,C8051F800-GMR,C8051F586-IQR,SI4010-C2-GSR,C8051F302-GS,EFM8SB20F16G-B-QFN24,C8051F531A-IMR,C8051F986-C-GMR,SI4012-C1001GT,SI4464-B1B-FM,EFM8LB12F64E-C-QFN24R,CP2104-F03-GM,EFM8UB20F32G-B-QFP48,SI1151-AB09-GMR,C8051F067-GQ,SI1064-A-GMR,EFM32GG330F512G-E-QFN64,EFM32LG980F128G-F-QFP100R,C8051F510-IM,SI4010-C2-GTR,C8051F300-GSR,EFM32LG840F256G-F-QFN64,C8051F336-GM,C8051F381-GM,CP2200-GQ,EFR32MG21A020F512IM32-B,EM341-RTR,C8051F121-GQR,C8051F589-IM,SI7020-A20-IM,EFM32LG360F256G-F-CSP81R,C8051F381-GQ,EM3588-RT,C8051F346-GQ,C8051F021-GQ,EFM32GG11B320F2048GQ100-BR,EFM32TG230F32-D-QFN64R,C8051F220-GQ,CP2105P0950FGM,SI4468-A2A-IM,EFM32ZG210F32-B-QFN32R,SI7023-A20-IMR,C8051F34A-GQ,C8051F975-A-GMR,CPT007B-A02-GM,C8051F544-IQ,C8051F524A-IM,C8051F530A-AMR,C8051F221-GQR,C8051F34A-GM,SI1181-B3-GM,C8051T326-GMR,EFM32G880F128G-E-QFP100,EFM8UB20F32G-B-QFP32,SI1144-AAGX-GMR,C8051F569-AM,EFR32BG21B010F768IM32-B,EFM32G200F16G-E-QFN32R,EZR32HG320F32R63G-C0R,EFM8BB10F4I-A-QFN20,EFM32G280F128G-E-QFP100,CPT007B-A02-GU,SI7053-A20-IM,C8051F531-C-AMR,C8051F585-IQR,C8051F313-GMR,C8051F321-GMR,C8051F991-C-GM,SI7021-A20-GM1,EFR32BG21B020F768IM32-B,SI1142-A11-GM,EFM32GG12B310F1024GQ100-AR,C8051F132-GQ,EFR32MG21B010F1024IM32-BR,SI1060-A-GMR,C8051F314-GQR,EFR32MG21A020F512IM32-BR,C8051F120-GQ,SI4464-B1B-FMR,C8051F396-A-GM,C8051F553-IMR,C8051T622-GM,SI4467-A2A-IM,C8051F063-GQ,SI7021-A20-GMR,C8051F567-IQ,SI1151-AB00-GM,EM357-ZRT,C8051F

产品变更通知及停产信息 - SILICON LABS - Jan 18, 2022 PDF 英文下载

【应用】CPT007B低功耗触摸芯片在智能面板开关中的应用，可提供 7 通道电容触摸按键

智能面板开关方案采用Silicon Labs 的触摸芯片CPT007B实现触摸按键功能，作为TouchXpress系列的一部分，CPT007B支持7路电容式传感器输入，可编程的灵敏度，7个通用的输出（GPO）与主机处理器通信。其具有低功耗（睡眠电流0.78uA），SNR高达270:1等优势。

应用方案发布时间 : 2018-12-20

CPT007B Schematic Footprints and Symbols

型号- CPT007B

CAD模型库 - SILICON LABS - 2023/10/26 BXL 英文下载

2201251170 Addendum to 2112141154 MOQ Increase for all IC and SiP Module Products（2022-01-11-1170）

型号- EFM32GG12B810F1024IL120-A,ZGM130S037HGN2,C8051F38A-B-GQ,EFM8BB31F16I-D-QFP32,C8051F813-GU,C8051F863-C-IS,EFM32TG11B540F64IQ80-B,SI7020-A20-GM,C8051F023-GQ,C8051F813-GM,C8051F587-AM,C8051F587-AQ,EFM8SB20F32G-B-QFN32,EZR32LG230F64R67G-C0,C8051F531-C-IM,C8051F011-GQ,EFM32GG11B420F2048IL120-B,C8051F362-C-GM,C8051F531-C-IT,EZR32HG320F64R68G-B0,BGX13S22GA-V31,C8051F975-A-GM,EFR32MG1P232F256GM48-C0,EFP0108GM20-E,EFR32FG22C121F512GM32-C,EFM32WG942F64-B-QFP64,EFM32G840F64G-E-QFN64,EFM32GG12B110F1024IM64-A,EFP0108GM20-D,EFM32GG12B110F1024GQ64-A,C8051F801-GM,C8051F125-GQ,EFM32GG12B530F512IQ100-A,EFM32ZG210F4-B-QFN32,EFR32FG23B020F128GM40-B,C8051F801-GU,SI1034-B-GM3,C8051F506-AQ,SIM3C167-B-GM,EFM32WG880F256-B-QFP100,EZR32LG230F128R67G-C0,EFM8BB51F8G-C-QFN20,SI4355-B1A-FM,CF321-SX0067GM,EFM8SB20F32G-B-QFN24,EZR32HG220F64R69G-C0,C8051F506-AM,EFM32GG11B820F2048IQ64-B,C8051F551-AM,EZR32LG330F64R68G-C0,EFM32LG890F64G-F-BGA112,C8051F854-C-IM,EFM32JG1B200F256GM32-C0,EFR32BG12P432F1024GM48-C,C8051F854-C-IU,EFR32FG1V032F128GM32-C0,SI1012-C-GM2,SI1152-AB00-GM,EFR32BG1B232F256IM32-C0,SI1175E2-B2-GM,EM3596-RT,C8051F963-B-GM,EFR32FG23B010F512IM40-B,CP2615-A02-GM,EFM32GG12B830F512IL112-A,SI1171G2-B2-GM,C8051F563-IM,SI4060-B1B-FM,SI4010-C2M03GT,EFM32G280F32G-E-QFP100,C8051F047-GQ,EFR32BG1P333F256GM48-C0,SI1173E2-B3-GM,C8051F563-IQ,EFM32ZG110F32-B-QFN24,EZR32HG220F64R67G-B0,C8051F310-GQ,C8051F863-C-GS,EZR32WG230F64R60G-C0,RS14100-SB00110F-B00-X16,SI4362-B1B-FM,SI4421-A1-FT,EZR32HG320F32R63G-C0,C8051F531-C-AT,EFR32FG12P432F1024GM48-C,EFM32LG230F256G-E-QFN64,C8051F854-C-GM,C8051F369-C-GM,C8051F854-C-GU,SIM3U144-B-GM,EFM32PG1B200F256IM48-C0,SI1082-A-GM,EFM8BB31F32G-C-QSOP24,EFM32PG1B200F128GM48-C0,EFM32TG11B140F64IQ64-B,CF321-SX0655GM,EFM8BB31F64G-C-QFP32,SI1171I3-B2-GM,EFM32GG11B510F2048IQ64-B,C8051F502-IM,C8051F575-IM,EFM32GG11B840F1024IQ64-B,C8051F502-IQ,EFM32LG280F256G-F-QFP100,C8051F921-G-GM,EFM32LG880F256G-F-QFP100,SI1141-A11-GM,C8051F587-IM,EFR32FG12P431F1024IM48-C,EFR32BG13P632F512GM48-D,EFM32GG12B130F512IM64-A,EFR32BG13P632F512GM48-C,C8051F587-IQ,SI1172I3-B3-GM,SI4011-C100EGT,EFM32TG11B520F128IQ64-B,CF380-PX0746GQ,C8051F546-IM,EFM8BB31F32A-D-4QFN24,EFM32GG11B820F2048GQ100-B,EFM32TG232F16-D-QFP64,EFM32TG11B120F128IQ64-B,C8051F567-AQ,C8051F531A-IT,EFR32BG12P232F1024GM48-C,C8051F567-AM,SI1025-B-GM3,C8051F043-GQ,EFM32TG110F32-QFN24T,EFM32GG12B530F512IM64-A,C8051F531A-IM,SIM3C144-B-GM,EFM32GG940F1024G-E-QFN64,EFM32JG1B200F128GM48-C0,EM3581-IRT,SI7201-B-05-IV,SI1064-A-GM,EFM32GG12B130F512GM64-A,EFM32GG12B510F1024GQ64-A,EZR32LG230F128R69G-C0,EFM32LG360F128G-F-CSP81,EFM32TG11B320F128IM64-B,EFM8UB10F16G-C-QFN28,EZR32HG220F64R67G-C0,SI4420-D1-FT,EFM32GG12B530F512GM64-A,EFM32TG230F8-D-QFN64,EFR32FG1V131F32GM48-C0,SI7201-B-86-IV,EFM8UB10F16G-C-QFN20,EFM8BB31F32G-B-QFN32,C8051F985-C-GM,EM357-RT,SI7201-B-30-IV,EFR32MG13P732F512IM32-D,EFM8SB10F2G-A-QFN20,C8051F395-A-GM,C8051T631-GM,EFM8BB31F32G-B-QFN24,C8051F334-GM,C8051F580-AQ,SI7210-B-01-IV,C8051F580-AM,EFM32HG110F64G-C-QFN24,C8051F302-GM,SI1142-M01-GM,EZR32LG330F256R61G-C0,EFM32HG322F32G-C-QFP48,EFM8LB11F16ES0-C-QFN32,C8051F302-GS,EFM32GG12B430F512GL120-A,EZR32LG330F128R68G-C0,SI4012-C1001GT,EFM8UB20F32G-B-QFP48,C8051F067-GQ,EFM32LG232F128G-F-QFP64,EFR32FG13P231F512GM32-D,EZR32WG330F128R63G-C0,EFM32TG11B340F64GM64-B,C8051F510-IM,EFM32GG995F1024G-E-BGA120,EFM32WG980F64-B-QFP100,EFM32GG12B410F1024IL120-A,EFM32LG840F256G-F-QFN64,EFM32TG840F8-D-QFN64,CP2200-GQ,EFM32TG822F32-QFP48T,EFM32HG309F32G-C-QFN24,EFM32TG11B520F128GQ64-B,SI7020-A20-IM,C8051F965-B-GM,C8051F346-GM,EFM32GG12B430F512IL120-A,EZR32HG320F64R68G-C0,EM3588-RT,C8051F346-GQ,EFR32ZG13P531F512GM48-D,SI1182-B3-GM,EFM32GG12B510F1024IL120-A,EFM32TG11B120F128GQ64-B,EFR32FG12P231F512GM68-C,C8051F220-GQ,CP2105P0950FGM,EFM32GG395F1024G-E-BGA120,EFR32BG1P332F256GM32-C0,C8051F502-AM,C8051F825-GS,SI1175K1-B4-GM,C8051F34A-GQ,CPT007B-A02-GM,C8051F502-AQ,C8051F34A-GM,C8051F524A-IM,EFM32LG232F64G-F-QFP64,SI7203-B-00-FV,SI1020-B-GM3,EFM32G880F128G-E-QFP100,EFM8UB20F32G-B-QFP32,C8051F592-AM,SI7005-B-FM1,EFR32BG21B010F768IM32-B,C8051F983-C-GM,CPT007B-A02-GU,EFM32G280F128G-E-QFP100,EZR32LG230F64R69G-C0,SI7053-A20-IM,EFM32GG11B820F2048IM64-B,EFR32BG22C222F352GM32-C,EFR32MG13P732F512GM48-D,SIM3U146-B-GM,C8051F531A-AT,SI4421-A0-FT1,EFM8BB31F32I-D-QSOP24,EFR32BG21B020F768IM32-B,EFR32FG23B010F128GM40-B,EFM8BB52F32I-C-QFN32,SI1022-B-GM3,EFR32FG1V232F256GM32-C0,EFM32TG108F8-D-QFN24,EZR32HG220F32R68G-C0,EFM32GG11B820F2048GQ64-B,EFM32GG12B110F1024GM64-A,EFM8BB51F8G-C-TSSOP20,EFM8BB31F64G-B-QFN32,SI7210-B-15-IM2,SI7201-B-08-IV,EFM32TG110F4-D-QFN24,EFM32WG880F64-B-QFP100,SI4467-A2A-IM,EFR32MG1P233F256GM48-C0,C8051F063-GQ,EFM8BB31F64G-B-QFN24,C8051F567-IQ,EFR32MG12P232F1024GM48-C,EM357-ZRT,EZR32WG230F256R61G-C0,C8051F567-IM,EFR32MG22C224F512IM32-C,EFM8BB52F32I-C-QFN20,C8051F326-GM,SI4010-C2P02GT,EFM32WG995F256-B-BGA120,EZR32HG320F32R61G-C0,C8051F531A-AM,C8051F546-AM,SI1173I3-B4-GM,SI4320-J-FT,SIM3L146-C-GQ,C8051F830-GS,C8051F314-GQ,SIM3L146-C-GM,C8051F536-C-AM,EFM

产品变更通知及停产信息 - SILICON LABS - Jan 11, 2022 PDF 英文下载

汽车触控板项目Touch IC选型需求 1. 工规或车规等级都可接受； 2. 支持7寸左右，通道数为26+17即可； 3. 支持手套，支持一定的水渍触摸；

可以看一下芯海科技的CSA37F60压力触控芯片，支持15路电容触摸输入；Silicon labs的电容触摸接口芯片CPT112S-A02-GMR支持15路电容触摸输入。如需手势操控功能，世强这边Silicon labs的手势传感器SI114X系列的手势/接近检测传感器。另外，MELEXIS还有结构光的方案，如MLX75027。

技术问答发布时间 : 2020-01-03