Quan Sheng Electronics: two-channel capacitive touch sensor chips QTC182A

Dual-channel capacitive touch buttons chip QTC182A Device Overview: QTC182A is an interference with the super, super waterproof 2-channel capacitive touch sensor chip, in different frequency switching power supply system, and non-isolated resistance work step-down power supply system and fully consistent sensitivity under the premise of appropriate sensitivity, splashing water overflow, flooding the touch panel will not lead to malfunction, even when water flooded into the film to be more than one sensor for normal touch operation, no need to increase the inductance in the filter case can go through more than 4KV group pulse interference electrical fast transient test, interference during normal touch operation, the sensitivity is not reduced, not drift, can also resist up to 5W walkie-talkie radio frequency interference, The system includes advanced auto-calibration feature sensitivity, automatic sensitivity compensation, work environment mutation suppression, to provide a flexible and easy way sensitivity adjustment, is widely ...... chip Features: ※ 3.0V ~ 5.5V wide voltage operating current of 1.2 ※ mA ~ 1.8mA ※ ESD> 6KV, EFT> 4KV meet the relevant industry standards ※ injection current up to 10V compliant EMC standards ※ stabilize after the power to complete initialization within 0.5S and start touching ※ with touch detection signal output timeout Forced off function to prevent the touch keys are locked ※ advanced software filtering algorithm significantly enhances the chip power supply ripple immunity ※ sensitive keys pressed down jitter time ≤80ms; release debounce time ≤40ms ※ super waterproof performance, even if the touch panel mist, the puddles to continue its normal operation ※ valid signals using one-touch direct output, no-touch high output, low output ※ touch with voltage drop protection, the process will not work because ※ After working environment (temperature \ humidity \ panel media, etc.) to change the power supply voltage drop and malfunction ※ powerful radiation anti-jamming capability, up to 5W walkie-talkie near the sensing plate continuous, intermittent emission does not malfunction, the chip can quickly calibrate ensure long time stability ※ sensitivity automatic real-time compensation algorithm, PCB LAYOUT occur due to the alignment between induction channel length \ thickness \ different capacitive coupling degree of sensitivity of each channel resulting in inconsistencies, the chip can automatically compensate accurate to use basically the same ※ SOP-8L package small feet wide scope of application: Household appliances digital products LED touch dimmer replace the traditional mechanical buttons