人体是最大的静电载体,平时就带有上万伏的电压,秋冬干燥的季节,静电更易在人体上积累,指纹识别作为不可避免与人接触应用,静电防护显得十分重要。本方案采用单颗器件防护,节约空间, 保证信号完整性,满足IEC61000-4-2,等级4,接触放电20kV,空气放电20kV。

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| model | brand | Quote |
|---|---|---|
| TL431ACLPR | Texas Instruments | |
| CDZVT2R20B | ROHM Semiconductor | |
| RB751G-40T2R | ROHM Semiconductor | |
| BD71847AMWV-E2 | ROHM Semiconductor | |
| MC33074DR2G | onsemi |
| model | brand | To snap up |
|---|---|---|
| ESR03EZPJ151 | ROHM Semiconductor | |
| TPS63050YFFR | Texas Instruments | |
| STM32F429IGT6 | STMicroelectronics | |
| IPZ40N04S5L4R8ATMA1 | Infineon Technologies | |
| BU33JA2MNVX-CTL | ROHM Semiconductor | |
| BP3621 | ROHM Semiconductor |
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