Product Brief
PB000130
TMF8801
Time-of-Flight Sensor
1
General Description
The TMF8801 is a time-of-flight (TOF) sensor in a single modular package with associated VCSEL.
The TOF device is based on SPAD, TDC and histogram technology. The device achieves 2500 mm
detection range.
2
Key Features
Figure 1:
Added Value of Using TMF8801
Benefits
Small footprint fits in the mobile phone bezel
Detecting central closest objects
Within 5 % of measurement (accuracy); no
multipath and no multiple object problems as
for iToF
Better accuracy detects reliably closest object
Minimum distance 20 mm
Maximum distance 2500 mm
No complex calibration
Compensates for dirt on glass
Class 1 Eye Safe
Features
Modular package - 2.2 mm x 3.6 mm x 1.0 mm
21º FOI
Time-to-Digital Converter (TDC)
Direct Time-of-Flight Measurement
Single Photon Avalanche Photodiode (SPAD)
Histogram based architecture
Dynamic cover glass calibration
Reliable Operation under demanding use cases
Fast VCSEL driver with protection
Product Brief • PUBLIC
PB000130 • 1-00 • 2019-July-22
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Document Feedback
TMF8801
3
Applications
●
Distance measurement for camera autofocus
(Laser Detect Autofocus - LDAF)
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Supporting low-power system operation by
enabling high-power components (i.e. 3D
camera) only when an object is in the
detection range
●
Collision avoidance
●
Presence detection - Object detection
4
Block Diagram
Figure 2:
Functional Blocks of TMF8801
EN
Host
GPIO1
INT GPIO0
SDA
SCL
TMF8801
TOF Sensor
Driver
Control
Data
Process
Cortex M0
SPAD,
TDC and
Histogram
VCSEL
Optics
Reflective
Surface
Internal
Reflection
Optical
Filter
Headquarters
ams AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Please visit our website at
www.ams.com
Buy our products or get free samples online at
www.ams.com/Products
Technical Support is available at
www.ams.com/Technical-Support
Provide feedback about this document at
www.ams.com/Document-Feedback
For sales offices, distributors and representatives go to
www.ams.com/Contact
For further information and requests, e-mail us at
ams_sales@ams.com
Copyright ams AG. Trademarks Registered. All rights reserved. The material herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner.
Product Brief • PUBLIC
PB000130 • 1-00 • 2019-July-22
VDDC
GNDC
VDD
GND
Background
Light
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