倾角传感器SCA100T详细说明文档

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VTI Technologies Oy Subject to changes

www.vti.fi Doc. nr. 8261800 Rev.A

SCA100T 双重的轴倾角罗盘系列 THE SCA100T DUAL AXIS INCLINOMETER SERIES

The SCA100T Series is a 3D-MEMS-based dual axis inclinometer family that provides instrumentation grade performance for leveling

applications. The measuring axes of the sensing elements are parallel to the mounting plane and orthogonal to each other. Low temperature

dependency, high resolution and low noise, together a with robust sensing element design, make the SCA100T the ideal choice for leveling

• 0.0025° resolution (10 Hz BW, 模拟输出)

• Sensing element controlled over damped

frequency response (-3dB 18Hz)

• Robust design, high shock durability (20000g)

• High stability over temperature and time

• Single +5 V supply

• Ratiometric analog voltage outputs

• SPI角度和温度输出Digital SPI inclination and temperature output

• 多种失败检测功能Comprehensive failure detection features

o True self test by deflecting the sensing

elements’ proof mass by electrostatic

force.

• RoHS compliant

• Compatible with Pb-free reflow solder process

Figure 1. Functional block diagram 功能方框图

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Storage temperature 保存温度 -55°C to +125°C

Mechanical shock 机械冲击

测量范围Measuring range 标称Nominal

±0.5

±90

±1.0

°

g

响应频率(带宽)Frequency response

–3dB LP

8-28 8-28 Hz

0g偏移量数字输出Offset Digital Output

模拟量输出灵敏度Sensitivity

70

2

35

V/g

mV/°

灵敏度校准误差Sensitivity calibration error

-40…125°C (max)

±0.86

°

温度引起的灵敏度偏移

-25...85°C (typical)

-40…125°C (max)

±0.014

±0.014

%/°C

%

典型的非直线性Typical non-linearity 满量程Measuring range

输出噪音密度Output noise density

From DC...100Hz

0.0008 0.0008

° /

模拟量输出分辨率Analog output resolution

Bandwidth 10 Hz

0.0025 0.0025 °

公制误差比率Ratiometric error

Note 1. 响应频率由内部敏感元件的气阻尼决定The frequency response is determined by the sensing element’s internal gas damping.

Note 2. The angle output has SIN curve relationship to voltage output refer to paragraph Error! Reference source not found.

Note 3. Resolution = Noise density * √(bandwidth)

Note 4. Power continuously connected (@ 23°C).

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Supply voltage Vdd 输入电压

模拟量稳定输出负载

Analog capacitive output load

模拟端电容

Vout to Vdd or GND 20 nF

Start-up delay 启动延迟

Reset and parity check

10 ms

Input high voltage 输入高电平

V

Input low voltage 输入低电平

V

-0.3 1 V

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VTI Technologies Oy Subject to changes

www.vti.fi Doc. nr. 8261800 Rev.A