TSL2561CL TAOS, TSL2561CL Datasheet - Page 2

• Manufacturer Part Number: TSL2561CL
• Description: Light to Digital Converters Ambient Light Sensor Light to Digital
• Manufacturer: TAOS

Specifications of TSL2561CL

• Data Bus Width: 20 bit
• Peak Wavelength: 640 nm, 940 nm
• Maximum Operating Frequency: 780 KHz
• Operating Supply Voltage: 2.7 V to 3.6 V
• Operating Current: 0.6 mA to 15 uA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 30 C
• Interface Type: I2C
• Maximum Fall Time: 300 ns
• Maximum Rise Time: 300 ns
• Mounting Style: SMD/SMT
• Resolution: 16 bit
• Package / Case: Chip LED
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TSL2560, TSL2561
LIGHT-TO-DIGITAL CONVERTER
TAOS059N − MARCH 2009
Functional Block Diagram
Detailed Description
Available Options
2
Copyright E 2009, TAOS Inc.
V
DD
The TSL2560 and TSL2561 are second-generation ambient light sensor devices. Each contains two integrating
analog-to-digital converters (ADC) that integrate currents from two photodiodes. Integration of both channels
occurs simultaneously. Upon completion of the conversion cycle, the conversion result is transferred to the
Channel 0 and Channel 1 data registers, respectively. The transfers are double-buffered to ensure that the
integrity of the data is maintained. After the transfer, the device automatically begins the next integration cycle.
Communication to the device is accomplished through a standard, two-wire SMBus or I
Consequently, the TSL256x device can be easily connected to a microcontroller or embedded controller. No
external circuitry is required for signal conditioning, thereby saving PCB real estate as well. Since the output
of the TSL256x device is digital, the output is effectively immune to noise when compared to an analog signal.
The TSL256x devices also support an interrupt feature that simplifies and improves system efficiency by
eliminating the need to poll a sensor for a light intensity value. The primary purpose of the interrupt function is
to detect a meaningful change in light intensity. The concept of a meaningful change can be defined by the user
both in terms of light intensity and time, or persistence, of that change in intensity. The TSL256x devices have
the ability to define a threshold above and below the current light level. An interrupt is generated when the value
of a conversion exceeds either of these limits.
= 2.7 V to 3.5 V
TSL2560
TSL2560
TSL2560
TSL2560
TSL2561
TSL2561
TSL2561
TSL2561
DEVICE
ADDR SEL
INTERFACE
SMBus
SMBus
SMBus
SMBus
I
I
I
I
2
2
2
2
C
C
C
C
Address Select
Visible and IR
Channel 0
Channel 1
IR Only
r
Dual Flat No-Lead − 6
Dual Flat No-Lead − 6
PACKAGE − LEADS
ChipLED-6
ChipLED-6
Chipscale
Chipscale
www.taosinc.com
TMB-6
TMB-6
Command
Register
Two-Wire Serial Interface
A/D Converter
Integrating
PACKAGE DESIGNATOR
Register
ADC
CS
FN
CS
FN
CL
CL
T
T
r
Interrupt
The LUMENOLOGY r Company
ORDERING NUMBER
TSL2560CS
TSL2561CS
TSL2560FN
TSL2560CL
TSL2561FN
TSL2561CL
TSL2560T
TSL2561T
2
C serial bus.
INT
SCL
SDA