TSL4531
DIGITAL AMBIENT LIGHT SENSOR
TAOS112 − OCTOBER 2011
Detailed Description
The device contains a photodiode array, an integrating analog-to-digital converter (ADC), signal processing
circuitry, lux calculation logic, and an I
2
C serial interface on a single CMOS integrated circuit to provide lux data
with a 16-bit output. No external circuitry is required for signal conditioning. The device features power
management modes where the user can select continuous operation, power save mode in which the device
inserts a power saving state between each acquisition, or single-cycle operation in which the device enters a
power-down state after data acquisition. The device has three user-selectable integration times of 100 ms,
200 ms, or 400 ms, allowing the user to adjust the sensitivity of the device.
Terminal Functions
TERMINAL
NAME
GND
SCL
SDA
V
DD
NO.
2
4
3
1
I
I/O
TYPE
DESCRIPTION
Power supply ground. All voltages are referenced to GND.
I
2
C serial clock input terminal.
I
2
C serial data I/O terminal — bidirectional.
Supply voltage.
Available Options
DEVICE
TSL45311
†
TSL45313
†
TSL45315
†
TSL45317
†
ADDRESS
0x39
0x39
0x29
0x29
PACKAGE − LEADS
CL−4
CL−4
CL−4
CL−4
INTERFACE DESCRIPTION
I
2
C Vbus = V
DD
Interface
I
2
C Vbus = 1.8 V Interface
I
2
C
Vbus = V
DD
Interface
I
2
C Vbus = 1.8 V Interface
ORDERING NUMBER
TSL45311CL
TSL45313CL
TSL45315CL
TSL45317CL
Contact TAOS for availability.
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
DD
(Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 V
Input terminal voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 4.5 V
Output terminal voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 4.5 V
Output terminal current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1 mA to 20 mA
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
ESD tolerance, human body model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
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-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to GND.
†
Recommended Operating Conditions
MIN
Supply voltage, V
DD
Operating free-air temperature, T
A
2.3
−15
NOM
2.5
MAX
3.3
70
UNIT
V
°C
Copyright
E
2011, TAOS Inc.
r
r
The
LUMENOLOGY
r
Company
2
www.taosinc.com
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
