TCS3701
ALS/Color and Proximity Sensor for Use Behind
OLED Displays
General Description
The TCS3701 features ambient light and color (RGB) sensing in
parallel with proximity detection. The device comes in a
low-profile and small footprint, L2.5mm x W2.0mm x H0.5mm
package.
The Ambient Light and Color Sensing function provides five
concurrent ambient light sensing channels: Red, Green, Blue,
Clear, and Wideband. The RGB and Clear channels have a UV/IR
blocking filter. This architecture accurately measures ambient
light and enables the calculation of illuminance, chromaticity,
and color temperature to manage display appearance.
The Proximity function synchronizes IR emission and detection
to sense nearby objects. The internal IR LED driver needs to be
connected to an external emitter. The architecture of the engine
features self-maximizing dynamic range, ambient light
subtraction, advanced crosstalk cancelation, 14-bit data output
and interrupt-driven I²C communication. Sensitivity, power
consumption, and noise can be optimized with adjustable IR
LED timing and power. The proximity engine recognizes
detect/release events and produces a configurable interrupt
whenever the proximity result crosses upper or lower threshold
settings.
ams Product Brief
[v1-03] 2018-Dec-19
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TCS3701 −
Key Benefits & Features
Key Benefits & Features
Figure 1:
Added Value of Using TCS3701
The benefits and features of TCS3701 are listed below:
Benefits
Features
•
Configurable, high sensitivity
• Programmable gain and integration time
• 1024x dynamic range by gain adjustment only
• 1mlux minimum detectable illuminance (100ms)
•
Tailored ALS and color response
• UV/IR blocking filter for RGBC channels
• Wideband reference channel without filters
•
ALS/color interrupt with thresholds
•
•
•
•
Capable to drive external IR emitter LED or VCSEL
Crosstalk and threshold calibration on chip
Programmable timings and sensitivity
Calibrated LED output power
•
Invisible ALS and color sensing under any
glass type
•
Invisible proximity detection behind OLED
displays
•
Low power consumption and minimum I²C
traffic
•
1.8V
DD
operation
•
Configurable sleep mode
•
Interrupt-driven device
•
On-chip self-calibration of ALS and proximity functions
•
Digital and analog ALS saturation flags
•
Proximity saturation flag
•
Integrated status checking for all functions
Applications
TCS3701 integrates multiple applications within one device.
The applications for TCS3701 include:
•
Brightness management for displays
•
Color management for displays
•
Proximity detection
•
Touch screen disable
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TCS3701 −
Block Diagram
Block Diagram
Figure 2:
Functional Blocks of TCS3701
The functional blocks of this device are shown below:
VDD
C
R
Multiplexer
G
B
PGND
W
ALS Engine
Color (CRGB)
Wideband (W)
Clear (C)
OSCILLATOR
VSS
IR
Proximity
Engine
PWM
ADC
ADCs
ADC
ADC
ADC
Prox ADC
SCL
5 ALS
IC
2
SDA
LDR
Registers
+ Limit
INPUT
- Limit
INT
+
-
GPIO
Interrupt Flags
Digital Core
TCS3701
ams Product Brief
[v1-03] 2018-Dec-19
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TCS3701 −
Copyrights & Disclaimer
Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten,
Austria-Europe. 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.
Devices sold by ams AG are covered by the warranty and patent
indemnification provisions appearing in its General Terms of
Trade. ams AG makes no warranty, express, statutory, implied,
or by description regarding the information set forth herein.
ams AG reserves the right to change specifications and prices
at any time and without notice. Therefore, prior to designing
this product into a system, it is necessary to check with ams AG
for current information. This product is intended for use in
commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or
high reliability applications, such as military, medical
life-support or life-sustaining equipment are specifically not
recommended without additional processing by ams AG for
each application. This product is provided by ams AG “AS IS”
and any express or implied warranties, including, but not
limited to the implied warranties of merchantability and fitness
for a particular purpose are disclaimed.
ams AG shall not be liable to recipient or any third party for any
damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interruption of business or
indirect, special, incidental or consequential damages, of any
kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation
or liability to recipient or any third party shall arise or flow out
of ams AG rendering of technical or other services.
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 further information and requests, e-mail us at:
ams_sales@ams.com
For sales offices, distributors and representatives, please visit:
www.ams.com/Contact
Headquarters
ams AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website:
www.ams.com
Contact Information
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[v1-03] 2018-Dec-19
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