Key Characteristics
| Characteristic | Range |
|---|---|
| Operating Voltage | 3.3V |
| Operating Temperature | -30°C to 85°C |
| Current Consumption | 10 μA (typ.), 100 μA (max) (5V) |
| Spectral Sensitivity | 5-7 μm (5V) |
| Detection Range | 3 m (5V) |
| Temperature Sensor Range | -10° to 60°C |
Pins
| Pin | Description | Direction |
|---|---|---|
| GND | Ground | In |
| 3.3V | Power | In |
| SDA | Data | In |
| SCL | Clock | In |
| INT | Interrupt, goes high when data is ready. After data is read, the pin pulls low | Out |
| Pin No. | Name | I/O | Function |
|---|---|---|---|
| 1 | VDD | - | Analog Power Supply Pin |
| 2 | CAD0 | I | Slave address 0. CAD0 pin should be connected to VDD or VSS. Set up an address so that two or more same address of devices do not exist on the same bus. |
| 3 | CAD1 | I | Slave address 1. CAD0 pin should be connected to VDD or VSS. Set up an address so that two or more same address of devices do not exist on the same bus. |
| 4 | INT | O | Functions are selected by INTEN register. INT pin goes “Active”, when the ADC output are ready to be read or the differential signal of two IR sensor(one observes the upper (or left)side and another observes lower (or right) side) exceeds threshold levels. It is composed of an open drain output (N-type transistor). INT pin is connected to DVDD voltagethrough a pull-up resister, with other open drain or open collector output of the other devices to form “wired-OR”. |
| 5 | PDN | I | Power down pin. When PDN pin= “H”, AK9753can operate. PDN pin is not connected to VDD (or VSS) through a pull-up (or pull-down) resister. This pin must be connected to “H”or “L”voltage level. |
| 6 | SDA | I/O | I2C Data Output Pin. SDA is a bidirectional pin which is used to transmit data into and out of the device.It is composed of a signal input and an open drain output (N-type transistor). SDA is connected to DVDD voltage through a pull-up resistor, and to open drain outputs or open collector outputs of the other devices as “wired-OR” |
| 7 | SCL | I | I2C Clock Input pin. Signal processing is executed at the rising and falling edge of SCL clock. Observe rise time tR and fall time tF. SCLis connected to DVDD voltage through a pull-up resistor. |
| 8 | DVDD | - | Digital I/F Power Supply pin. |
| 9 | TEST | I | Test pin. TEST pin should be connected to VSS. |
| 10 | VSS | - | Ground pin. |
Block Functions
| Block | Function |
|---|---|
| 4 x IR | Four IR Sensor |
| MUX | Matrix Switch |
| TIA | Photocurrents of IR Sensor are converted to voltage signals. |
| AMP | Programmable gain amplifier to adjust the outputs. |
| Temperature Sensor | Built-in Temperature Sensor |
| ADC | The amplifier output and the built-in temperature sensor output are converted to digital signals. |
| I2C Interface | Interface to external host controller. |
| SCL and SDA pins are provided for I2C Interface. Theinterface operates up to 400kHz rate and down to 1.65V low voltage condition. | |
| EEPROM | EEPROM |
| OSC | Internal Oscillator. |
| POR | Power On Reset circuit. |
The upper (left, lower, right) side is defined as the side on which IR sensor 1(2, 3, 4) is arranged.
| Parameter | Symbol | Typ. | Unit |
|---|---|---|---|
| Field of View (* 19) | FOV | ±80 | deg(º) |