SI1120-A-GM low power Sensor IC Proximity Reflectance Based

                                                                  SI1120-A-GM Datasheet

Product Details

Description

The Si1141/42/43 is a low-power, reflectance-based, infrared proximity and ambient light sensor with I2C digital interface and programmable-event interrupt output. This touchless sensor IC includes an analog-to-digital converter, integrated high-sensitivity visible and infrared photodiodes, digital signal processor, and one, two, or three integrated infrared LED drivers with fifteen selectable drive levels. The Si1141/ 42/43 offers excellent performance under a wide dynamic range and a variety of light sources including direct sunlight. The Si1141/42/43 can also work under dark glass covers. The photodiode response and associated digital conversion circuitry provide excellent immunity to artificial light flicker noise and natural light flutter noise. With two or more LEDs, the Si1142/43 is capable of supporting multiple-axis proximity motion detection. The Si1141/42/43 devices are provided in a 10-lead 2x2 mm QFN package and are capable of operation from 1.8 to 3.6 V over the –40 to +85 °C temperature range.

Features

■ QuickSense™ integrated infrared proximity detector
•Proximity detection adjustable from under 1 cm to over 1 m
•Three independent LED drivers
•15 current settings from 5.6 mA to 360 mA for each LED driver
•25.6 µs LED driver pulse width
•500 mm proximity range with single pulse (<2.5 klx)
•150 mm proximity range with single pulse (>2.5 klx)
•Operates at up to 128 klx (direct sunlight)
•Minimum reflectance sensitivity < 1 µW/cm2
•High EMI immunity without shielded packaging
■ QuickSense™ integrated ambient light sensor
•10 mlx resolution possible, allowing operation under dark glass
•1 to 128 klx dynamic range possible across two ADC range settings
•17-bit resolution
•Accurate lux measurements possible with IR correction algorithm
•25.6 µs measurement cycle keeps total power consumption duty cycle low without compromising performance or noise immunity
■ Industrys lowest power consumption
•1.8 to 3.6 V supply voltage
•9 µA average current (LED pulsed 25.6 µs every 800 ms at 180 mA plus 3 µA Si114x supply)
•< 500 nA standby current
•Internal and external wake support
•Built-in voltage supply monitor and power-on reset controller
■ Serial communications
•Up to 3.4 Mbps data rate
•Slave mode hardware address decoding
■ Small-outline 10-lead 2x2 mm QFN
■ Temperature Range
•–40 to +85 °C

Applications

■ Handsets
■ E-book readers
■ Notebooks/Netbooks
■ Portable consumer electronics
■ Audio products
■ Security panels
■ Tamper detection circuits
■ Dispensers
■ Valve controls
■ Smoke detectors
■ Touchless switches
■ Touchless sliders
■ Occupancy sensors
■ Consumer electronics
■ Industrial automation
■ Display backlighting control
■ Photo-interrupters

Specifications

Descriptions

Who we are?

is a professional electronic marketing corporation entirely engaged in the fields of semi-conductors and electronic components sale and service for clients over 10 years, specialize in selling the new and unused, original factory sealed packing electronic components. specialize in IC,diode,transistor,IGBT,DC-DC converter.....***has set up our own sales service conception and has already established strong partnerships with many famous manufacturers and we have more than 5,000,000 kinds of electronic components for your choices, always at your services !