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About AKM
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 suitable 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 I²C bus. Each setting can be made from an external MCU.
By connecting our products AK9700AE and AK9710AE, NDIR type CO₂ sensor system can be easily configured.
Key Features
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Equipped with programmable constant current circuit
Applications
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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
