AK9723AJ

NEW

LED Driver Built-in IR Sensor Analog Front End

LED Driver Built-in IR Sensor Analog Front End

NEW

Description

The AK9723AJ is an analog front-end IC for IR sensors with a built-in LED driver for infrared emission. The light emitting element (IR-LED) driver of the AK9723AJ is a programmable constant current circuit, enabling optimal control according to the optical path length of the gas sensor. In addition, the signal from the light receiving element (IR sensor) is amplified by a programmable gain amplifier, AD-converted with 13-bit resolution, and performed via the I²C bus. Each setting can be performed from an external MCU. By connecting our products AK9730AJF21 and AK9703AJ, NDIR type CO₂ sensor system can be easily configured.

Key Features

  • It has a built-in LED driver. The light emitting device (IR-LED) driver can be controlled according to the optical path length of the gas sensor with a programmable constant current circuit.

Applications

  •                                 Measurement of flammable gas concentration, etc.
                                

Specifications

Part Number
AK9723AJ
LED Drive Current [mA]
28 - 121 Programmable (3mA Step)
ADC Resolution [bit]
13
Power Supply Voltage (MIN.) [V]
2.7
Power Supply Voltage (TYP.) [V]

                                
Power Supply Voltage (MAX.) [V]
3.6
Package Size [mm]
4.0 x 4.0 x 0.7
Other

                                
Operating Temperature [℃]
-40 to 85
Device Package
HWQFN
Number of Pins
16

Product Information

Part Status
NEW
Pb Free
Yes
Halogen Free
Yes
MSL
MSL1
Packaging
TAPE
JEDEC Standard Packaging
Compliant
Minimum Order Quantity [pcs.]
1000
Replacement P/N

                                

Block Diagram