ICU-10201
High-perfomance Ultrasonic Time-of-Flight Range Sensor
This document contains information on a preproduction
product. Specifications and information herein are
subject to change without notice.
InvenSense, a TDK Group Company
1745 Technology Drive, San Jose, CA 95110 U.S.A
+1(408) 988–7339
invensense.tdk.com
Document Number: DS-000480
Revision: 1.4
Release Date: 01/09/2024
ICU-10201 HIGHLIGHTS
ICU-10201 is a high-performance, miniature, ultra-low power,
long-range ultrasonic Time-of-Flight (ToF) transceiver. Based
on Chirp’s patented MEMS technology, the ICU-10201 is a
system-in-package that integrates a nominally 175 kHz PMUT
(Piezoelectric Micromachined Ultrasonic Transducer) together
with a 2
nd
generation ultra-low power SoC (System on Chip) in
a miniature, reflowable package.
The SoC is designed for overall low system power and for ease
of use with external host processors. Low power is achieved
through custom digital circuitry to process and buffer the raw
sensor readings. This keeps the integrated microcontroller in a
low power idle state until needed. For ease of use, the
microcontroller can process the raw sensor readings into high
level signals, such as range to nearby target(s), or events, such
as presence, which can be directly read by the host processor.
The SoC communicates with the host processor over SPI at up
to 13 MHz at either 1.8 or 3.3 V.
Complementing Chirp’s other ultrasonic ToF sensor products,
ICU-10201 provides accurate range measurements to targets
at distances up to 1.2 m. Based on ultrasonic pulse-echo
measurements, the sensor works in any lighting condition,
including full sunlight, and provides millimeter-accurate range
measurements independent of the target’s color and optical
transparency. The sensor’s Field-Of-View (FOV) can be
customized using a horn. ICU-10201 is capable of simultaneous
range measurements to multiple objects in the FOV. Several
available algorithms can further process the echo information
for a variety of usage cases in a range of applications (listed
below).
DEVICE INFORMATION
PART NUMBER
PACKAGE
ICU-10201
3.5 x 3.5 x 1.26 mm
LGA
ICU-10201-PC†
3.5 x 3.5 x 1.26 mm
LGA
†
Pitch-Catch variant || RoHS and Green-Compliant Package
APPLICATIONS
• Floor type detection for robotic vacuums
• Cliff detection for robotic vacuums
• <1 m presence detection
• 3D tracking
• Pitch-catch ranging between wireless nodes
FEATURES
• Fast, accurate range-finding
• 40 MHz integrated CPU enables on-chip
algorithms including rangefinding, human
presence, and wake-on approach
• Operating range from 10 cm to 1.2 m
• Detection of moving objects closer than 10cm
• Programmable modes optimized for long or
short-range sensing applications
• Customizable field of view (FoV) up to 180°
• Multi-object detection
• Works in any lighting condition, including full
sunlight to complete darkness
• Insensitive to object color, detects optically
transparent surfaces (glass, clear plastics etc.)
• Easy to integrate
• Single sound port for receive and transmit
• 1.8 V or 3.3 V I/O voltage
• Low power 1.8V core operating voltage
• 13 MHz SPI interface allows baseband data
stream out at full measurement rate
• Optional 32 kHz reference clock input
• Optional measurement clock input
• Two programmable open drain I/O for
triggering the sensor or waking the host
• Platform-independent software driver enables
turnkey range-finding
• Field of view can be customized through design
of the acoustic port
• Miniature integrated package
• 3.5 mm x 3.5 mm x 1.26 mm, 14-pin LGA
• Compatible with standard SMD reflow
• Operating temperature range: -40°C to 85°C
• Low supply current
• 1 sample/s:
o 14 µA (0.5 m max range)
o 17 µA (1 m max range)
• 50 samples/s:
o 212 µA (0.5 m max range)
o 320 µA (1 m max range)
ICU-10201
Page 2 of 21
Document Number: DS-000480
Revision: 1.4
Table of Contents
ICU-10201 HIGHLIGHTS ............................................................................................................................................................... 1
DEVICE INFORMATION ................................................................................................................................................................... 1
APPLICATIONS .............................................................................................................................................................................. 1
FEATURES .................................................................................................................................................................................... 1
1 Simplified Block Diagram & Pin OUT ............................................................................................................................ 3
1.1 PIN DESCRIPTIONS ............................................................................................................................................................ 3
2 Electrical Characteristics .............................................................................................................................................. 4
2.1 ABSOLUTE MAXIMUM RATINGS ........................................................................................................................................... 4
2.2 ULTRASONIC TRANSCEIVER CHARACTERISTICS ......................................................................................................................... 5
2.3 I/O CHARACTERISTICS ........................................................................................................................................................ 6
2.4 SPI TIMING CHARACTERISTICS – 4-WIRE SPI MODE ............................................................................................................. 6
2.5 SPI TIMING CHARACTERISTICS – 3-WIRE SPI MODE .................................................................................................................. 7
3 Detailed Description .................................................................................................................................................... 8
3.1 THEORY OF OPERATION...................................................................................................................................................... 8
3.1.1 Ultrasonic Transducer ................................................................................................................................................................. 8
3.1.2 Measurement Process................................................................................................................................................................. 8
3.1.3 I/Q Baseband data ...................................................................................................................................................................... 9
3.1.4 Rangefinding ............................................................................................................................................................................. 10
3.1.5 Low power systems ................................................................................................................................................................... 10
3.1.6 Clock Calibration ....................................................................................................................................................................... 10
3.2 DEVICE CONFIGURATION .................................................................................................................................................. 11
4 Applications ............................................................................................................................................................... 12
4.1 TYPICAL OPERATING CHARACTERISTICS ............................................................................................................................... 12
4.2 SONICLIB DRIVER ............................................................................................................................................................ 12
4.3 OBJECT DETECTION ......................................................................................................................................................... 12
4.4 DEVICE MODES OF OPERATION ......................................................................................................................................... 13
4.4.1 Free-Running Mode .................................................................................................................................................................. 13
4.4.2 Hardware-Triggered Mode ....................................................................................................................................................... 13
4.4.3 Software-Triggered Mode ......................................................................................................................................................... 13
4.5 COEXISTENCE NEAR OTHER ICU-10201 ............................................................................................................................. 14
4.6 PITCH-CATCH OPERATION ................................................................................................................................................. 14
4.7 PCB REFLOW RECOMMENDATIONS: ................................................................................................................................... 14
4.8 TYPICAL OPERATING CIRCUITS ........................................................................................................................................... 15
4.9 RECOMMENDED PCBA LAYOUT ........................................................................................................................................ 16
5 Package Information .................................................................................................................................................. 17
5.1 PIN CONFIGURATION ....................................................................................................................................................... 17
5.2 PACKAGE DIMENSIONS .................................................................................................................................................... 18
6 Ordering Information ................................................................................................................................................. 19
6.1 PART NUMBER DESIGNATION ............................................................................................................................................ 19
6.2 PACKAGE MARKING ........................................................................................................................................................ 19
6.3 TAPE & REEL SPECIFICATION ............................................................................................................................................. 20
6.4 SHIPPING LABEL .............................................................................................................................................................. 20
7 Revision History ......................................................................................................................................................... 21