TSL2562 Datasheet, PDF (1/42 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – LOW-VOLTAGE LIGHT-TO-DIGITAL CONVERTER

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D Approximates Human Eye Response
D Programmable Interrupt Function with
User-Defined Upper and Lower Threshold
Settings
D 16-Bit Digital Output with SMBus (TSL2562)
at 100 kHz or I²C (TSL2563) Fast-Mode at
400 kHz
D Programmable Analog Gain and Integration
Time Supporting 1,000,000-to-1 Dynamic
Range
D Automatically Rejects 50/60-Hz Lighting
Ripple
D Low 2.5-V Input Voltage and 1.8-V Digital
Output
D Low Active Power (0.6 mW Typical) with
Power Down Mode
D RoHS Compliant
TSL2562, TSL2563
LOW-VOLTAGE
LIGHT-TO-DIGITAL CONVERTER
TAOS066N − AUGUST 2010
PACKAGE CS
6-LEAD CHIPSCALE
(TOP VIEW)
V_DD 1
ADDR SEL 2
GND 3
6 SDA
5 INT
4 SCL
V_DD 1
ADDR SEL 2
GND 3
PACKAGE T
6-LEAD TMB
(TOP VIEW)
6 SDA
5 INT
4 SCL
Description
The TSL2562 and TSL2563 are low-voltage
light-to-digital converters that transform light
intensity to a digital signal output capable of direct
I²C (TSL2563) or SMBus (TSL2562) interface.
Each device combines one broadband photo-
diode (visible plus infrared) and one infrared-re-
sponding photodiode on a single CMOS inte-
grated circuit capable of providing a near-photop-
ic response over an effective 20-bit dynamic
range (16-bit resolution). Two integrating ADCs
convert the photodiode currents to a digital output
that represents the irradiance measured on each
channel. This digital output can be input to a
microprocessor where illuminance (ambient light
level) in lux is derived using an empirical formula
to approximate the human eye response. The
TSL2562 device permits an SMB-Alert style
interrupt, and the TSL2563 device supports a
traditional level style interrupt that remains
asserted until the firmware clears it.
PACKAGE FN
DUAL FLAT NO-LEAD
(TOP VIEW)
V_DD 1
ADDR SEL 2
GND 3
6 SDA
5 INT
4 SCL
SDA 5
PACKAGE CL
6-LEAD ChipLED
(TOP VIEW)
4 SCL
INT 6
3 ADDR SEL
V_DD 1
2 GND
Package Drawings are Not to Scale
While useful for general purpose light sensing applications, the TSL2562/63 devices are designed particularly
for display panels (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing
in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total
platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination
based upon ambient lighting conditions. Illuminance information can further be used to manage exposure
control in digital cameras. The TSL2562/63 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel
televisions, cell phones, and digital cameras. In addition, other applications include street light control, security
lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters.
The LUMENOLOGY r Company
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Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972_r) 673-0759
www.taosinc.com
Copyright E 2010, TAOS Inc.
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