A good PCB layout for the TSOP31240 should minimize the distance between the IR receiver and the surrounding components, use a ground plane to reduce noise, and avoid running digital signals near the receiver's pins. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure reliable data transmission, use a carrier frequency between 36 kHz and 40 kHz, and ensure that the transmitter's output power is within the recommended range. Also, use a suitable modulation scheme, such as pulse-width modulation (PWM) or amplitude-shift keying (ASK).
The maximum distance the TSOP31240 can receive IR signals depends on the transmitter's power, the environment, and the receiver's sensitivity. Typically, the TSOP31240 can receive signals up to 30 meters (100 feet) in a clear line of sight, but this can be affected by obstacles, ambient light, and other factors.
To handle ambient light interference, use a suitable optical filter, such as a daylight filter or a bandpass filter, to reduce the impact of ambient light on the receiver. Additionally, use a high-pass filter or a notch filter to reject low-frequency noise and hum.
The recommended voltage supply range for the TSOP31240 is 2.7 V to 5.5 V, with a typical operating voltage of 3.3 V or 5 V. Ensure that the voltage supply is stable and noise-free to ensure reliable operation.
