ISL29027中文资料具备智能中断和睡眠模式的接近传感器数据手册Renesas规格书

描述 Description

The ISL29027 is an integrated infrared light-to-digital converter with a built-in IR LED driver and I2C Interface (SMBus Compatible). The flexible interrupt scheme is designed for minimal microcontroller utilization.
For proximity sensor (Prox) data conversions, the built-in driver turns on an external infrared LED and the proximity sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise (such as sunlight) and has a 540µs conversion time.
The ISL29027 provides proximity sensing with a typical 138µA normal operation current (110µA for sensors and internal circuitry, ~28µA for external LED) with 220mA current pulses for a net 100µs, repeating every 800ms (or under).
The ISL29027 uses both a hardware pin and software bits to indicate an interrupt event has occurred. A proximity interrupt is defined as a measurement over a threshold limit. The user may also require that proximity interrupts occur at once, up to 16 times in a row before activating the interrupt pin.
The ISL29027 is designed to operate from 2.25V to 3.63V over the -40°C to +85°C ambient temperature range. It is packaged in a clear, lead-free 8 lead ODFN package.

特性 Features

• Works Under All Light Sources Including Sunlight
• Proximity Sensing
• Can Use 850nm and 950nm External IR LEDs
• Net 100µs Pulse with 110mA or 220mA Amplitudes
• Ambient IR Noise Cancellation (Including Sunlight)
• Proximity Interrupt Thresholds
• 1/4/8/16 Consecutive Triggers Required Before Interrupt
• 138µA DC Typical Supply Current for Prox Sensing
• 28µA Typical Current for External IR LED (Assuming 220mA for 100µs Every 800ms)
• Easy to Use
• I2C (SMBus Compatible) Output
• Tiny ODFN8 2.0x2.1x0.7 (mm) Package
• 1.7V to 3.63V Supply for I2C Interface
• Pb-Free (RoHS Compliant)
• I2C Address Selection Pin

应用 Application

• Mobile Devices: Smart Phone, PDA, GPS
• Consumer Devices: LCD-TV, Digital Picture Frame, Digital Camera