1 datasheet to request the full datasheet, please visit www.intersil.com/products/isl29501 time of flight (tof) signal processing ic isl29501 the isl29501 is a time of flight (tof ) based signal processing integrated circuit. the sensor enables low cost, low power and long range optical distance se nsing when combined with an external emitter and detector. the isl29501 has a built-in curren t dac circuit that drives an external led or laser. the modulated light from the emitter is reflected off the target and is received by the photodiode. the photodiode then converts the returned signal into current, which is used by the isl29501 for signal processing. an on-chip digital signal processor (dsp) calculates the time of flight, which is proportional to the target distance. the isl29501 is equipped with an i 2 c interface for configuration and control. use of an external photodiode and emitter allows the user to optimize the system design for performance, power consumption and distance measur ement range that suit their industrial design. the isl29501 is wavelength agnostic and permits the use of other optical wavelengths if better suited for applications. features ? enables proximity detection and distance measurement ? modulation frequency of 4.5mhz ? emitter dac with programmable current up to 255ma ? operates in continuous and single shot mode ? on-chip active ambient light rejection ? auto gain control mechanism ? interrupt controller ? supply voltage range of 2.7v to 3.3v ?i 2 c interface supporting 1.8v and 3.3v bus ? low profile 24 ld 4x5 tqfn package applications ? mobile consumer applications ? industrial proximity sensing ? power management ? home automation figure 1. application diagram ir led pd c 2 c 1 c 3 r 1 r 2 r 3 host mcu r 4 c 4 2.7v to 3.3v ss avss dvss dvcc pdp pdn avcc rset cen scl sda evcc eir evss irq vout a1 a2 avdd 2.7v to 3.3v 2.7v to 3.3v r 4 r 5 october 7, 2015 fn8681.1 caution: these devices are sensitive to electrostatic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | copyright intersil americas llc 2015. all rights reserved intersil (and design) is a trademark owned by intersil corporation or one of its subsidiaries. all other trademarks mentioned are the property of their respective owners.
isl29501 2 intersil products are manufactured, assembled and tested utilizing iso9001 quality systems as noted in the quality certifications found at www.intersil.com/en/suppor t/qualandreliability.html intersil products are sold by description only. intersil corporat ion reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnished by intersil is believed to be accurate and reliable. however, no responsi bility is assumed by intersil or its subsid iaries for its use; nor for any infringem ents of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of i ntersil or its subsidiaries. for information regarding intersil corporation and its products, see www.intersil.com fn8681.1 october 7, 2015 for additional products, see www.intersil.com/en/products.html submit document feedback
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