I am designing an embedded system where I need to minimize power consumption in standby mode (ideally no additional consumption from the IR receiver circuit when in standby) This system will be running off of coin cell batteries, so its very important to minimize consumption.
Functionality - some microcontroller is connected to an IR receiver circuit. The microcontroller is in sleep mode normally, when the IR receiver is sent a signal (from an IR remote control) it will wake the microcontroller, decode the message, perform some task, and then return to sleep.
how should I configure the receiver circuit to eliminate power consumption when not receiving data?
Can I simply use a large resistor to limit the current to something like 1mA when receiving data? (this is to minimize power consumption both when in standby and when receiving data)
Will ambient light cause the IR receiver to complete the circuit and affect the power consumption?
when waking on interrupt, how can I ensure the microcontroller does not miss the beginning of the message?
Thanks in advance