ISL29501IRZ-T7A Renesas

DATASHEET ISL29501 FN8681 Rev.6.00 Time of Flight (ToF) Signal Processing IC Dec 3, 2020 the ISL29501 is a Time of Flight (ToF) based signal processing Features integrated circuit. The sensor enables low cost, low power, and Enables proximity detection and distance measurement long range optical distance sensing when combined with an external emitter and detector. Modulation frequency of 4.5MHz The ISL29501 has a built-in current DAC circuit that drives an Emitter DAC with programmable current up to 255mA external LED or laser. The modulated light from the emitter is Operates in Continuous and Single Shot mode reflected off the target and is received by the photodiode. The On-chip active ambient light rejection photodiode then converts the returned signal into current, which is used by the ISL29501 for signal processing. Auto gain control mechanism Interrupt controller An on-chip Digital Signal Processor (DSP) calculates the time of flight, which is proportional to the target distance. The Supply voltage range of 2.7V to 3.3V 2 ISL29501 is equipped with an I C interface for configuration 2 I C interface supporting 1.8V and 3.3V bus and control. Low profile 24 Ld 4x5 QFN package Use of an external photodiode and emitter allows the user to optimize the system design for performance, power Applications consumption, and distance measurement range that suit their Mobile consumer applications industrial design. Industrial proximity sensing The ISL29501 is wavelength agnostic and permits the use of other optical wavelengths if better suited for applications. Power management Home automation Related Literature For a full list of related documents, visit our website ISL29501 product page 2.7V TO 3.3V DVCC EVCC 2.7V TO 3.3V EIR C 1 DVSS C 2 IR R 4 R LED 5 R R R EVSS 1 2 3 A1 A2 PDp SCL PD SDA PDn HOST IRQ MCU SS AVCC CEn C 3 VOUT AVSS RSET AVDD C 4 R 4 2.7V TO 3.3V FIGURE 1. APPLICATION DIAGRAM FN8681 Rev.6.00 Page 1 of 22 Dec 3, 2020ISL29501 Table of Contents Block Diagram 3 Power Consumption . 11 Shutdown 11 Ordering Information 3 Sampling Time . 11 Pin Configuration 4 Integration Time 12 Pin Descriptions . 4 Automatic Gain Control 12 Ambient Light ADC 12 Absolute Maximum Ratings . 5 Data Outputs 13 Thermal Information . 5 Interrupt Controller 13 Recommended Operating Conditions 5 Noise Rejection . 13 Electrical Specifications . 5 2 I C Serial Interface 13 2 I C Electrical Specifications 6 Chip Identification (Address) 13 Principles of Operation 8 A2 and A1 Pins . 13 Protocol Conventions 13 Functional Overview . 8 Write Operation . 14 Power Supply Pins 8 Read Operation . 14 Power-On Reset 8 Standard Calibration . 15 Chip Enable (CEn) Pin . 9 Crosstalk Calibration 15 Sample Start (SS) Pin . 9 Command Register . 9 Distance Offset Calibration . 15 Interrupt (IRQ) Pin 9 Optical System Design Considerations 15 Sampling Modes . 9 Register Map 16 Single Shot 9 Data Output Registers 19 Continuous Mode . 9 PCB Design Practices 20 Emitter Driver . 9 EIR Pin 9 PCB Layout Considerations . 20 Main DAC 10 Additional PCB Layout Rules for the Thermal Pad . 20 Threshold DAC 10 General Power PAD Design Considerations 20 Connecting the Photodiode 10 Revision History . 21 Selecting the Photodiode . 10 Emitter Selection 11 Package Outline Drawing . 22 Ambient Light Rejection 11 FN8681 Rev.6.00 Page 2 of 22 Dec 3, 2020