TLV8544: request schematic review

Dexter Choi

Expert 2795 points

Part Number: TLV8544

Dear Sir,

Could you please review attached schematic for PIR Sensor?

Thanks.

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Dexter,

your circuit is nearly indentical to the circuit shown in this TI's user guide:

But why have you added C209? This will short circuit the output of PIR.

Kai

+1 Ron Michallick over 3 years ago

Hello Dexter,

The two diode "or" gate will need a pull down resistor to make a valid output low.

Amplifiers forum