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.


  • Works Under All Light Sources Including Sunlight
  • Intelligent Interrupt Scheme Simplifies µC Code
  • Proximity Sensor with Broad IR Spectrum
  • Can Use 850nm and 950nm External IR LEDs
  • IR LED Driver with I2C Programmable Sink Currents
  • Net 100µs Pulse with 110mA or 220mA Amplitudes
  • Periodic Sleep Time up to 800ms Between Pulses
  • Ambient IR Noise Cancellation (Including Sunlight)
  • Intelligent and Flexible Interrupts
  • Proximity Interrupt Thresholds
  • Adjustable Interrupt Persistency
  • 1/4/8/16 Consecutive Triggers Required Before Interrupt
  • Ultra Low Power
  • 138µA DC Typical Supply Current for Prox Sensing
  • 110µA for Sensors and Internal Circuitry
  • 28µA Typical Current for External IR LED (Assuming 220mA for 100µs Every 800ms)
  • <1.0µA Supply Current When Powered Down
  • Easy to Use
  • Set Registers; Wait for Interrupt
  • I2C (SMBus Compatible) Output
  • Temperature Compensated
  • Tiny ODFN8 2.0x2.1x0.7 (mm) Package
  • 1.7V to 3.63V Supply for I2C Interface
  • 2.25V to 3.63V Sensor Power Supply
  • Pb-Free (RoHS Compliant)
  • I2C Address Selection Pin


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


器件号 Part Status Pkg. Type Carrier Type MOQ Buy Sample
Obsolete HODFN Reel 3000


文档标题 language 类型 文档格式 文件大小 日期
star ISL29027 Datasheet 数据手册 PDF 756 KB
应用指南 & 白皮书
AN1436: Introduction of Proximity Sensing 应用文档 PDF 563 KB
PLC21035 - End of Life Notice Product Life Cycle Notice PDF 1.17 MB
PCN11115 - Product Improvement - Design Change for Intersil Product ISL29027IROZ-T7 产品变更通告 PDF 155 KB