TMD3700
Color, ALS and Proximity Sensor
Module
General Description
The device features advanced Proximity measurement, Digital
Ambient Light Sensing (ALS) and Color Sensing (CRGB). The slim
module incorporates an IR LED and factory calibrated LED
driver. The Proximity detection feature provides object
detection (e.g. mobile device screen to user’s ear) by
photodiode detection of reflected IR energy (sourced by the
integrated LED).
Detect/release events are interrupt driven, and occur when
proximity result crosses upper and/or lower threshold settings.
The proximity engine features offset adjustment registers to
compensate for unwanted IR energy reflection at the sensor.
Proximity results are further improved by automatic ambient
light subtraction. The Color and ALS detection feature provides
red, green, blue and clear light intensity data. Each of the C, R,
G, B channels have a UV and IR blocking filters and a dedicated
data converter producing16-bit data simultaneously. This
architecture allows applications to accurately measure ambient
light and sense color which enables devices to calculate
illuminance and color temperature, control display backlight,
and chromaticity.
Ordering Information
and
Content Guide
appear at end of
datasheet.
Figure 1:
Added Value of Using TMD3700
Benefits
•
Reduced board space requirements and
enables low-profile system design
•
Improved ALS angular response for more
accurate measurement of lighting
environment
•
Operating range of 200 milli-Lux to
60 kilo-Lux enables operation behind dark
glass
Features
•
Small footprint and low profile package
4.00 x 1.75 x 1.00 mm
•
45 degree average ALS FOV
•
Wide dynamic range and high sensitivity
ams Datasheet
[v1-02] 2016-Aug-19
Page 1
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TMD3700 −
General Description
Benefits
•
•
•
•
Features
RGB, Ambient Light Sensor (ALS) and proximity support
Power management features
I²C fast mode interface compatible
Integral IR LED
•
Single device integrated optical solution
•
Accurate color temperature and ambient
light sensing
•
Reduced power consumption
•
UV / IR blocking filters
•
Programmable gain and integration time
•
0.18μ process technology with 1.8V I²C bus
Applications
The TMD3700 applications include:
•
Color Sensing
•
Ambient Light Sensing
•
Mobile Phone touch screen disable
Block Diagram
The functional blocks of this device are shown below:
Figure 2:
Functional Blocks of TMD3700
K
/
/Z
>
W
>
^
W'E
>
W
W
W
>
W
d
h
^>
W
/
t
^
>^ d
/Z
>^
>
h
/ /
K
^
Z
'
,
,
,
,
,
,
,
,
/
d
/Ed
s
'E
dD
Page 2
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ams Datasheet
[v1-02] 2016-Aug-19
TMD3700 −
Pin Assignment
Pin Assignment
Top View of module showing pin assignment
Figure 3:
TMD3700 Pinout (Top View)
^>
'E
/Ed
s
W'E
^
>
E
Figure 4:
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
SCL
INT
PGND
LEDA
NC
SDA
VDD
GND
Description
I²C serial clock input terminal
Interrupt. Open drain output (active low).
Ground for LED current sink.
LED anode
No connection
I²C serial data I/O terminal
Supply voltage
Ground. All voltages are referenced to GND
ams Datasheet
[v1-02] 2016-Aug-19
Page 3
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TMD3700 −
Absolute Maximum Ratings
Absolute Maximum Ratings
Stresses beyond those listed under
Absolute Maximum Ratings
may cause permanent damage to the device. These are stress
ratings only. Functional operation of the device at these or any
other conditions beyond those indicated under
Recommended
Operating Conditions
is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Figure 5:
Absolute Maximum Ratings
Symbol
VDD
LEDA
V
IO
(SDA, INT)
T
Strg
I
SCR
ESD
HBM
ESD
CDM
Parameter
Supply voltage
Supply voltage
Digital I/O terminal voltage
Output terminal current
Storage temperature range
Input current (latch up immunity)
JEDEC JESD78D Nov 2011
Electrostatic discharge HBM
S-001-2014
Electrostatic discharge CDM
JEDEC JESD22-C101F Oct 2013
Min
-0.3
-0.3
-0.3
-1
-40
CLASS 1
±2000
±500
Max
2.2
3.6
3.6
20
85
Units
V
V
V
mA
ºC
V
V
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ams Datasheet
[v1-02] 2016-Aug-19
TMD3700 −
Electrical Characteristics
Electrical Characteristics
Figure 6:
Recommended Operating Conditions
Symbol
V
DD
V
LEDA
T
A
Parameter
Supply voltage
Voltage supplied to LEDA pin
Operating free-air temperature
(1)
Min
1.7
3.0
(2)
-30
Typ
1.8
3.3
Max
2.0
3.6
85
Units
V
V
°C
Note(s):
1. While the device is operational across the temperature range, performance will vary with temperature. Operational characteristics are at
25°C, unless otherwise noted.
2. Minimum VLED for pldrive of 100mA or less.
Figure 7:
Operating Characteristics, V
DD
= 1.8 V, T
A
= 25ºC (unless otherwise noted)
Symbol
f
OSC
Parameter
Oscillator frequency
Conditions
Min
Typ
8.0
Max
Units
MHz
Active ALS state
(PON=AEN=1, PEN= 0)
(2)
IDD
Supply current
(1)
20
90
150
μA
Idle state
(PON=1, AEN=PEN=0)
(3)
Sleep state
(4)
30
0.7
60
5.0
0.6
μA
V
VOL
INT, SDA output low voltage
Leakage current, SDA, SCL,
INT, pins
SCL, SDA input high voltage
SCL, SDA input low voltage
Time from power-on to ready
to receive I²C commands
6 mA sink current
Leakage current at
0V = ± 50nA
Leakage current at
3V = ± 50nA
ILEAK
-50
50
nA
VIH
VIL
T
ACTIVE
1.26
0.54
1.5
V
V
ms
Note(s):
1. Values are shown at the VDD pin and do not include current through the IR LED.
2. This parameter indicates the supply current during periods of ALS integration. If Wait is enabled ( WEN=1), the supply current is lower during
the Wait period.
3. Idle state occurs when PON=1 and all functions are not enabled.
4. Sleep state occurs when PON = 0 and I²C bus is idle. If Sleep state has been entered as the result of operational flow, SAI = 1, PON will remain
high.
ams Datasheet
[v1-02] 2016-Aug-19
Page 5
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