Datasheet Asahi Kasei Microdevices AK9723AJ — Datenblatt

[AK9723AJ] AK9723AJ
LED Driver and Sensor AFE for NDIR Gas Sensing
1. General Description
The AK9723AJ is the IR LED driver and Analog Front End (AFE) IC for signal processing of IR photo
detector. The AK9723AJ has dual channel AFE and an ADC for digital output, and IR photo detector
output signals can be obtained at the same time. The AK9723AJ can communicate with HOST MCU
through I2C bus. The AK9723AJ is suitable for NDIR gas sensing processing using IR LED and IR
photo detector. 2. Features Integrated LED Driver with Programmable Constant Current Circuit
Dual Channel Input AFE
Interrupt Function
Power Supply Voltage Range: 2.7V to 3.6V
Small and Thin Package: 16-pin QFN 4.0mm x 4.0mm x t0.7mm 3. Applications NDIR gas sensor 018015111-E-01 2019/8
-1 -[AK9723AJ] 4. Table of Contents 1. General Description. 1
2. Features . 1
3. Applications . 1
4. Table of Contents . 2
5. Block Diagram and Functions . 4
5.1. Block Diagram . 4
5.2. Functions . 4
6. Pin Configurations and Functions . 5
6.1. Pin Configurations . 5
6.2. Functions . 5
7. Absolute Maximum Ratings . 6 …