AK9720 Datasheet, PDF (1/31 Pages) Asahi Kasei Microsystems – IR Sensor Module with I2C I/F

[AK9720]
AK9720 (Preliminary)
IR Sensor Module with I2C I/F
This specification is a design target, not guaranteed specifications for the final
product. Specifications are the subject to change without notice.
Description
The AK9720 is a slim and compact infrared-sensor module composed of a quantum IR
sensor and an integrated circuit for characteristic compensation. The IC generates an
analog signal that adjusts the infrared sensor’s offset and/or gain fluctuations and
temperature characteristics. An integrated analog-to-digital converter provides a 16-bit data
output. Additional integrated features include a field of view limiter structure and an optical
filter. The AK9720 enables new applications, including as remote temperature sensing,
stationary human detection, and proximity detection.
Features
 Quantum-type IR sensor: IR1011 Core
 Low voltage operation
VDD
+1.71 to +3.63V
Digital I/F +1.65V to VDD
 Low current consumption： 100uA typ. （@ 330ms sampling period ）
 16bit-ADC output to I²C bus
⇒Digital output simplifies system integration
 Fast response： TBD ms （@ sampling period）
 Selectable output: temperature compensated signal or bypass signal
 Integrated temperature sensor output
 When the compensated signal is selected, the output has been adjusted for offset/gain
variation and temperature sensitivity of IR sensors:
=> Simplifies heat design
=> No host processing needed for temperature compensated output
 Stationary human body detection algorithm available as reference software
 Slim, compact package with field of view limiter structure and optical filter
⇒Simplifies optical design
 Linear output correlated to target temperature
 Settings (including ON/OFF control and sampling rate) programmed through I²C bus
 Input level variations can be adjusted through a programmable gain stage
 INT pin goes high when the ADC output is ready to read
⇒Can be used as read-trigger for single shot mode, or interrupt of signal level
monitoring.
 Integrated power-on reset, and oscillator
 10pin SON Package
Rev.02
AKM Confidential
-1-
2012/11