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參數(shù)資料
| 型號(hào)： | LIS352AXTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBCC14 |
| 封裝： | 3 X 5 MM, 0.92 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTCI, LGA-14 |
| 文件頁(yè)數(shù)： | 15/15頁(yè) |
| 文件大小： | 247K |
| 代理商： | LIS352AXTR |
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LIS352AX
Functionality
Doc ID 15530 Rev 2
9/15
4
Functionality
The LIS352AX is a 3-axis ultracompact low-power, analog output linear accelerometer
packaged in a LGA package. The complete device includes a sensing element and an IC
interface capable of taking information from the sensing element providing an analog signal
to the external world.
4.1
Sensing element
A proprietary process is used to create a surface micro-machined accelerometer. The
technology allows the creation of suspended silicon structures which are attached to the
substrate at several points called “anchors” and are free to move in the direction of the
sensed acceleration. To be compatible with traditional packaging techniques, a cap is
placed on top of the sensing element to prevent blocking of the moving parts during the
moulding phase of plastic encapsulation.
When an acceleration is applied to the sensor, the proof mass shifts from its nominal
position, causing an imbalance in the capacitive half-bridge. This imbalance is measured
using charge integration in response to a voltage pulse applied to the sense capacitor.
At steady state, the nominal value of the capacitors are a few pF, and when an acceleration
is applied the maximum variation of the capacitive load is in the fF range.
4.2
IC interface
The complete signal processing utilizes a fully differential structure, while the final stage
converts the differential signal into a single-ended signal to be compatible with external
applications.
The first stage is a low-noise capacitive amplifier that implements a correlated double
sampling (CDS) at its output to cancel the offset and the 1/f noise. The signal produced is
then sent to three different S&Hs, one for each channel, and made available to the outside.
The device provides an embedded multiplexer to allow the redirection of either the analog
output signals Voutx, Vouty, and Voutz, or of an auxiliary input signal onto a single pin for
operation with a single-channel A/D converter.
All the analog parameters (output offset voltage and sensitivity) are absolute with respect to
the voltage supply. Increasing or decreasing the voltage supply will not cause a change in
the sensitivity and the offset. The feature allows the coupling of the sensor with an ADC,
having a fixed voltage reference independent from Vdd.
4.3
Factory calibration
The IC interface is factory calibrated for sensitivity (So) and zero-g level (Voff).
The trimming values are stored inside the device in a non volatile structure. Any time the
device is turned on, the trimming parameters are downloaded into the registers to be
employed during the normal operation. This allows the user to employ the device without
further calibration.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LIS35DE | 功能描述:加速計(jì) - 板上安裝 MEMS MOTION SENSOR 3 AXIS 2G/8G SDO NAN RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C |
| LIS35DETR | 功能描述:加速計(jì) - 板上安裝 DGTL OUTPT MTN SEN MEMS ULTRA LO PWR RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C |
| LIS-3-6 | 制造商:TDK-Lambda Corporation 功能描述:15W AC To DC Switching Power Supply - 95-132V/187-265V in - 6V 2.5A out |
| LIS3DETR | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:SADA_MEMS digital output motion sensor, ultra low-power high performance 3-axes |
| LIS3DH | 功能描述:加速計(jì) - 板上安裝 MEMS Ultra Low-Power 3-Axes "Nano" RoHS:否 制造商:Murata 傳感軸:Double 加速:12 g 靈敏度: 封裝 / 箱體: 輸出類型:Analog 數(shù)字輸出 - 位數(shù):11 bit 電源電壓-最大:5.25 V 電源電壓-最小:4.75 V 電源電流:4 mA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C |
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