công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
ADXL213AE bảng dữ liệu(PDF) 10 Page - Analog Devices |
|
ADXL213AE bảng dữ liệu(HTML) 10 Page - Analog Devices |
10 / 12 page ADXL213 Rev. 0 | Page 10 of 12 Peak-to-peak noise values give the best estimate of the uncertainty in a single measurement. Table 6 gives the typical noise output of the ADXL213 for various CX and CY values. Table 6. Filter Capacitor Selection (CX, CY) Bandwidth(Hz) CX, CY (µF) RMS Noise (mg) Peak-to-Peak Noise Estimate (mg) 10 0.47 0.64 3.8 50 0.1 1.4 8.6 100 0.047 2 12 500 0.01 4.5 27.2 USING THE ADXL213 WITH OPERATING VOLTAGES OTHER THAN 5 V The ADXL213 is tested and specified at VS = 5 V; however, it can be powered with VS as low as 3 V or as high as 6 V. Some perfor- mance parameters will change as the supply voltage is varied. The ADXL213 output varies proportionally to supply voltage. At VS = 3 V, the output sensitivity is typically 28%/g. The zero g bias output is ratiometric, so the zero g output is nominally equal to 50% at all supply voltages. The output noise also varies with supply voltage. At VS = 3 V, the noise density is typically 200 µg/√Hz. Self-test response in g is roughly proportional to the square of the supply voltage. So at VS = 3 V, the self-test response is equivalent to approximately 270 mg (typical), or 8%. The supply current decreases as the supply voltage decreases. Typical current consumption at VDD = 3 V is 450 µA. USING THE ADXL213 AS A DUAL-AXIS TILT SENSOR One of the most popular applications of the ADXL213 is tilt measurement. An accelerometer uses the force of gravity as an input vector to determine the orientation of an object in space. An accelerometer is most sensitive to tilt when its sensitive axis is perpendicular to the force of gravity, i.e., parallel to the earth’s surface. At this orientation, its sensitivity to changes in tilt is highest. When the accelerometer is oriented on axis to gravity, i.e., near its +1 g or –1 g reading, the change in output accelera- tion per degree of tilt is negligible. When the accelerometer is perpendicular to gravity, its output changes nearly 17.5 mg per degree of tilt. At 45°, its output changes at only 12.2 mg per degree and resolution declines. Dual-Axis Tilt Sensor: Converting Acceleration to Tilt When the accelerometer is oriented so both its X and Y axes are parallel to the earth’s surface, it can be used as a 2-axis tilt sensor with a roll axis and a pitch axis. Once the output signal from the accelerometer has been converted to an acceleration that varies between –1 g and +1 g, the output tilt in degrees is calculated as follows: PITCH = ASIN(AX/1 g) ROLL = ASIN(AY/1 g) Be sure to account for overranges. It is possible for the accelerometers to output a signal greater than ±1 g due to vibration, shock, or other accelerations. |
Số phần tương tự - ADXL213AE |
|
Mô tả tương tự - ADXL213AE |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |