ISL29501IRZ Time of Flight Signal Processing IC Renesas Electronics ISL29501IRZ Time of Flight (ToF) Signal Processing IC enables low-cost, low-power, and long-range proximity detection and distance measurement when combined with an external emitter and detector. The ISL29501IRZ features a built-in current DAC with programmable current up to 255mA and an on-chip DSP to calculate ToF proportional to the target distance. This device is ideally suitable for mobile consumer applications, industrial proximity sensing, power management, and home automation.