可視光カットタイプは700～1100 nmに感度をもつため (最大感度波長 850 nm)、800～950 nmの波長範囲のLEDを推奨します。
透明プラスチックタイプは400～1100 nmに感度をもつため (最大感度波長 800 nm)、可視～赤外の波長範囲のLEDが適しています。
LED駆動時、瞬間的に大きい電流が配線を流れるため、電圧の揺らぎが生じます。この電圧の揺らぎによりICが不安定になり、誤動作を起こす場合があります。光変調型フォトICの近くにバイパスコンデンサ (0.1 μF程度)を入れ、LEDの電源ラインに電源安定化のためのコンデンサ (電解コンデンサなど)を入れて対策をしてください。
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