AK8975C是AKM公司推出的一款三軸電子羅盤IC,AK8975C中集成了多個磁傳感器分別用于檢測X軸、Y軸和Z軸的磁感以及用于處理信號的運算電路。該電子羅盤主要應(yīng)用于便攜式設(shè)備(PDA或手機)的GPS功能模塊上。
AK8975C的采購信息如下:
AK8975C的主要功能特性包括:
1、Si-monolithic 3-axis geomagnetic sensor LSI
2、Measurement range:± 1200 T
3、Functions
- Time-sharing sequencer controls automatic measurement of 3-axis magnetism
- Built-in ADC for magnetometer data output
- 13-bit digital output (resolution: 0.3 T)
- Individual adjustment data, already stored before shipment at AKM, such as sensitivity of sensor
- Serial interfaces (separated from main power supply, low voltage is acceptable)
· I2C-bus interface (can be operated at Standard- or Fast-mode)
· 4-wire SPI
- Operation modes: Power-down, Single measurement and ROM access
- Magnetic sensor overflow monitor function
- Power on reset circuit
- Interrupt function for measurement data ready
- No clock input required (built-in oscillator)
- Automatic power-down function
4、Operating temperature range: -30°C to +85°C
5、Operating supply voltage range: Vdd = +2.4V to +3.6V, Vid = +1.65V to Vdd
6、Current consumption
- 3-axis magnetism measurement (ave.):350 A (typ.) at 8 Hz repetition rate
- Power-down: 3 A (typ.)
7、Packages
- AK8975: 16-pin QFN (4.0 4.0 0.75 mm)
- AK8975B/C: 14-pin WL-CSP, BGA (2.0 2.0 0.6 mm)
AK8975C的功能框圖如下:
AK8975C的管腳圖如下:
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