AK9753 Datasheet, PDF (4/50 Pages) Asahi Kasei Microsystems – IR Sensor IC with I2C I/F

4.1. Block Diagram
4. Block Diagram and Functions
[AK9753]
Figure 4.1 AK9753 Block Diagram
4.2. Block Functions
Block
4 x IR
MUX
TIA
AMP
Temperature Sensor
ADC
I²C Interface
EEPROM
OSC
POR
Table 4.1. Block Functions
Function
Four IR Sensor
Matrix Switch
Photocurrents of IR Sensor are converted to voltage signals.
Programmable gain amplifier to adjust the outputs.
Built-in Temperature Sensor
The amplifier output and the built-in temperature sensor output are
converted to digital signals.
Interface to external host controller.
SCL and SDA pins are provided for I²C Interface. The interface operates up
to 400kHz rate and down to 1.65V low voltage condition.
EEPROM
Internal Oscillator.
Power On Reset circuit.
017005237-E-00
-4-
2017/04