AK9721AE

EOL

LED Driver Built-in IR Sensor Analog Front End

LED Driver Built-in IR Sensor Analog Front End

EOL

Description

The AK9721AE is an analog front-end IC for IR sensors with a built-in LED driver for infrared emission.
The driver for the light emitting element (IR-LED) of the AK9721AE is a programmable constant current circuit, enabling optimal control according to the optical path length of the gas sensor. The signal from the light receiving element (IR sensor) is amplified by a programmable gain amplifier, AD-converted at 13-bit resolution, and output via the I?C bus. Each setting can be made from an external MCU.
By connecting our products AK9700AE and AK9710AE, NDIR type CO? sensor system can be easily configured.

Key Features

  • Equipped with programmable constant current circuit

Applications

  •                                 Measurement of gas concentration in a room or in a closed chamber
                                

Specifications

Part Number
AK9721AE
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]
3.0 x 3.0 x 0.7
Other

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

Product Information

Part Status
EOL
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