AK9723AD

MP

LED Driver Built-in IR Sensor Analog Front End

LED Driver Built-in IR Sensor Analog Front End

MP

Description

The AK9723AD is an analog front-end IC for IR sensors with a built-in LED driver for infrared emission. The AK9723AD has a light emitting element (IR-LED) driver with a programmable constant current circuit, which enables 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 AK9710ADF01 and AK9700AD, you can easily configure NDIR type CO₂ sensor system.

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 gas concentration in a room or in a closed chamber
                                

Specifications

Part Number
AK9723AD
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
Automotive grade
Operating Temperature [℃]
-40 to 90
Device Package
HWQFN
Number of Pins
16

Product Information

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

                                

Block Diagram

Block Diagram