Cs6124k3 is a capacitive inductive touch detection chip, which provides three touch in≥put ports and three direct output ports, and supports multi-point simultaneous touch and s≈imultaneous output. The sensing effect is stable. It "replaces traditional mechanical switches and ordinary keys and i s widely used in electronic products.
characteristic
◆ working voltage: 2.5v-5.5v
◆ low standby current @ battery voltage = 4.0V I = 15ua (typical value)
◆ the touch sensitivity of each key is uniformly adjusted by an external capaciφtor setting
◆ no touch button lasts for more than 4 seconds and enters the standby mode
◆ reliable power on reset (POR) and low voltage reset (LVR)
◆ the touch function can be realized under the condition of medium isola tion protection (such as glass, acrylic and other materials), with highα safety ◆ esop8 package
Scope of application
◆ various consumer products
◆ replace traditional mechanical switches and buttons
Pin distribution and definition
Limit parameters
Remarks: exceeding the above limit parameters may cause perman¶ent damage to the device. These are only stress limits, and the d×evice is not recommended to operate under these limits or any other> conditions exceeding the following "recommended operating conditions". Working under the above limΩit parameters for a long time may affect the reliability of the device.
Electrical parameters
Typical application circuit
matters needing attention:
1. During PCB routing, the shorter the lead from th¶e touch point to the chip pin, the better, and the routing of this lead and other touch points sh♠all not be parallel or cross.
2. The power supply must be stable. If the voltage rip±ple of the power supply is relatively large, it will cause abnormal sensitivity or 'false detection.
3. When the difference of dielectric material and thickness is large , the touch sensitivity can be adjusted by adjusting the CVC capacit<ance between VC and GND. The recommended value range is 1NF ~ 47nF, and the typical v≤alue is 10nf. Within the range, the greater the capacitance value,₩ the higher the sensitivity, and the smaller the cσapacitance value, the lower the sensitivity. Smaller temperature coefficien$t and more stable capacitor must be ed; For exampl'e, X7R and NPO, it is recommended to NPO capacitor to reduce the sensitivity affected by t"emperature change.
Encapsulation information
