Illustration of CH201, TDK MEMS ultrasonic time-of-flight sensor

CH201

Long-Range Ultra-Low-Power Integrated MEMS Ultrasonic Time‑of‑Flight Range Sensor with Millimeter Accuracy

Chirp’s MEMS based ultrasonic technology leverages a Time‑of‑Flight (ToF) range sensor with a power-efficient digital signal processor (DSP) ASIC in a 3.5 × 3.5 mm package. The sensor handles a variety of ultrasonic signal-processing functions and algorithms, enabling customers flexible industrial design options for a broad range of use-case scenarios, including range-finding, presence and proximity sensing, object-detection and avoidance, and position-tracking.

Shop Now

Features

  • Detects objects of any color and optical transparency up to 5m
  • Ultra-Low Power
  • Works in Any Lighting Condition
  • Customizable field of view (FoV) up to 180°
  • Integrated 3.5 × 3.5 × 1.26 mm Package
  • Low-power SoC firmware for ultrasonic processing a wide-range of usage cases

Product Features and Benefits

Field-of-View (FoV):
Configurable Up to 180°

Key features

Presence detection

Ultra-low power and low latency Ultrasonic ToF sensors detect presence and minor motion under any lighting condition

Obstacle avoidance

Always-on battery powered smart locks utilize ultra-low power Ultrasonic ToF sensors to enable feature rich smart locks

Gesture control

Ultra-low power sensing

Product details

Product key details

Operation
Pulse-Echo
-
-
Package Size
1.26 x 3.50 x 3.50
Range
0 – 5
-
-
Voltage
-
-
-
Current Consumption
13.50
-
-
Interface
I2C
-
SPI 13 MHZ

Development hardware

EV_MOD_CH201-00-01

Ultrasonic ToF 45° FoV sensor module for rapid prototyping and integration into product enclosures

learn more
DK-CH201

DK-CH201

Comprehensive development platform for CH201, with the ability to connect up to four additional CH201 modules.1212

Learn more

Documentation and resources

Explore our complete library of technical resources, easily filtered by application or product.

Datasheet / Product Brief

DS-000639 – ICM-42686-P Datasheet
Version1.2
Updated2021-01-07
Download

App Notes & User Guides

AN-000159 – CH101 and CH201 Ultrasonic Transceiver Handling and Assembly Guidelines
Version1.0
Updated2019-11-24
Download
AN-000169 – Ultrasonic Module Pulse-Echo Test Procedure
Version1.1
Updated2020-08-04
Download
AN-000221 – CH201 and ICU-20201 Mechanical Integration Guide
Version1.2
Updated2021-10-06
Download

Firmware Support

“Hello Chirp” Example for SmartSonic
Version2.31.0
Updated
Download
SmartSonic CH201 Static Target Rejection Example
Version2.9.0
Updated
Download
AN-000154 – SmartSonic “Hello Chirp” Application Hands-On Exercise
Version1.2
Updated2020-08-05
Download
AN-000175 – SonicLib Programmer's Guide
Version3.0
Updated2024-07-15
Download
AN-000156 – Chirp Microsystems CH101 SonicLink Software Quick Start Guide
Version1.1
Updated2019-09-27
Download

Software

TDK sensor SDK
Version1.1
Updated1763610801
Download

Support and resources

Find answers, documentation, and community support you need

Icon depicting three people standing together

TDK community

Connect with engineers, ask questions, and share insights with the TDK developer community.

Icon depicting a graduation cap with tassle

Knowledge base

Access technical articles, datasheets, and in-depth guides to accelerate your design process.

Icon with the letters "FAQ" inside a diamond shape

FAQ

Find immediate answers to our most frequently asked questions about products, shipping, and more.

Looking for additional help?