ISL29501_15 Datasheet, PDF (1/2 Pages) Intersil Corporation – Time of Flight (ToF) Signal Processing IC

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 sensing when combined with an
external emitter and detector.
The ISL29501 has a built-in current 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 I²C 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 measurement 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
• I²C 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
2.7V TO 3.3V
2.7V TO 3.3V
C₁
R₄
R₅
R₁ R₂ R₃
HOST
MCU
C₄
DVCC
DVSS
A1
A2
SCL
SDA
IRQ
SS
CEn
VOUT
AVDD
EVCC
EIR
IR
C2
LED
EVSS
PDp
PD
PDn
AVCC
AVSS
C₃
RSET
R₄
2.7V TO 3.3V
FIGURE 1. APPLICATION DIAGRAM
October 7, 2015
1
FN8681.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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