優(yōu)勢(shì)和特點(diǎn)

  10至13位分辨率的多用途加速度計(jì)，適用于各種不同的應(yīng)用

  可通過(guò)SPI（3和4線）和 I2C訪問(wèn)數(shù)字輸出

  內(nèi)置運(yùn)動(dòng)檢測(cè)功能使得單振、雙振、活動(dòng)、非活動(dòng)、方向和自由落體檢測(cè)都可忽略不計(jì)??用戶可調(diào)閾值??中斷可獨(dú)立映射至兩個(gè)中斷引腳

  低至23 μA的低功耗運(yùn)行及嵌入式FIFO，可降低整體系統(tǒng)功耗

  寬電源和I/O電壓范圍：1.7 V至2.75 V

  寬工作溫度范圍（?40°C至+85°C）

  抗沖擊能力：10,000 g

  小型、超薄、無(wú)鉛、符合RoHS標(biāo)準(zhǔn)、3 mm × 3 mm × 0.95 mm LGA封裝

產(chǎn)品詳情

The ADXL344 is a versatile 3-axis, digital-output, low g MEMS accelerometer. Selectable measurement range and bandwidth and configurable, built-in motion detection make it suitable for sensing acceleration in a wide variety of applications. Robustness to 10,000 g/of shock and a wide temperature range (?40°C to +85°C) enable use of the accelerometer even in harsh environments.

The ADXL344 measures acceleration with high resolution (13-bit) measurement at up to ±16 g/. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface. The ADXL344 can measure the static acceleration of gravity in tilt-sensing appli-cations, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°.

Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion. Tap sensing detects single and double taps in any direction. Free-fall sensing detects if the device is falling. Orientation detection reports four- and six-position orientation and can trigger an interrupt upon change in orientation. These functions can be mapped individually to either of two interrupt output pins.

An integrated memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.

The ADXL344 is supplied in a small, thin, 3 mm × 3 mm × 0.95 mm, 16-terminal, plastic package.

APPLICATIONS

  Handsets

  Gaming and pointing devices

  Personal navigation devices

  Hard disk drive (HDD) protection