Product Status: Mass Production
OVERVIEW
The ISL29027 is an integrated infrared light-to-digital converter with a built-in IR LED driver and I2
C 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.
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.
KEY FEATURES
- Works Under All Light Sources Including Sunlight
- Intelligent Interrupt Scheme Simplifies µC Code
- Proximity Sensing
- 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
- Additional Features
- 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
BLOCK DIAGRAM
PARAMETRICS
Parameters
ISL29027
Basic Information
Production Status
Mass Production
Peak Spectral Sensitivity
830 nm
VS (min)
2.25 V
VS (max)
3.63 V
ICC
110
Resolution Bits
8
Gain Selection?
No
Qualification Level
Standard
Bus/Output Interface
I2C
Address Selection Pins?
Yes
Package Dimensions (mm)
2.0x2.1x0.7
Enable Pin?
No
Can Sample
YES
Temperature Range
-40 to +85