Replacement P/N
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