ISL29035 [INTERSIL]
Integrated Digital Light Sensor with Interrupt; 集成的数字光传感器，中断
| 型号： | ISL29035 |
| 厂家： | 
Intersil |
| 描述： | Integrated Digital Light Sensor with Interrupt |
| 文件： | 总2页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Integrated Digital Light Sensor with Interrupt
ISL29035
Features
The ISL29035 is an integrated ambient and infrared
• Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-bits ADC
• Wide dynamic range . . . . . . . . . . . . . . . . . . . . . . .1:4,200,000
• Integrated noise reduction . . . . . . . . . . . . . . . . . . . . . 50/60Hz
• Close to human eye response with excellent IR/UV rejection
• Shutdown modes . . . . . . . . . . . . . . . .Software and Automatic
• Programmable interrupt threshold with persistence filter
• Supply current (typ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57µA
• Shutdown current (max) . . . . . . . . . . . . . . . . . . . . . . . . . .0.3µA
• I2C (SMB compatible) power supply . . . . . . . . . 1.7V to 3.63V
• Sensor power supply . . . . . . . . . . . . . . . . . . . . .2.25V to 3.63V
• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C
• Small form factor package. . . . . . . 6 Ld 1.5x1.6x0.75 ODFN
light-to-digital converter with I2C (SMBus Compatible) Interface.
Its advanced self-calibrated photodiode array emulates human
eye response with excellent IR rejection. The on-chip ADC is
capable of rejecting 50Hz and 60Hz flicker caused by artificial
light sources. The Lux range select feature allows users to
program the Lux range for optimized counts/Lux.
For ambient light sensing, an internal 16-bit ADC has been
designed based upon the charge-balancing technique. The
ADC conversion time is nominally 90ms and is user adjustable
from 11µs to 90ms, depending on oscillator frequency and
ADC resolution. In normal operation, typical current
consumption is 57µA. In order to further minimize power
consumption, two power-down modes have been provided. If
polling is chosen over continuous measurement of light, the
auto-power-down function shuts down the whole chip after
each ADC conversion for the measurement. The other
power-down mode is controlled by software via the I2C
interface. The power consumption can be reduced to less than
0.3µA when powered down.
Applications
• Mobile devices: smart phone, PDA, GPS
• Computing devices: notebook PC, MacBook, tablets
• Consumer devices: LCD-TV, digital camera
• Industrial and medical light sensing
The ISL29035 supports a software brownout condition
detection. The device powers up with the brownout bit asserted
until the host clears it through the I2C interface.
The ISL29035 supports a software and hardware interrupt that
remains asserted until the host clears it through the I2C
interface. Function of ADC conversion continues without
stopping after interrupt is asserted.
Designed to operate on supplies from 2.25V to 3.63V with an I2C
supply from 1.7V to 3.63V, the ISL29035 is specified for
operation over the -40°C to +85°C ambient temperature range.
100Ω
VDD
VDD_PULLUP
1µF
4.7kΩ 4.7kΩ 4.7kΩ
1
VDD
SDA
SCL
SDA
6
5
4
SCL
INT
3
ISL29035
NC
MCU
GPIO
GND
2
FIGURE 1. ISL29035 TYPICAL APPLICATION DIAGRAM
September 18, 2013
FN8371.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
ISL29035
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in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN8371.0
September 18, 2013
2
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