参数资料
型号: TSSOP20EV
厂商: Microchip Technology
文件页数: 3/30页
文件大小: 0K
描述: BOARD EVAL FOR MCP43X
标准包装: 1
主要目的: 裸评估板
嵌入式:
主要属性: TSSOP-20/16/14/8 和 SSOP-20 评估板
次要属性: 用于 PICmicro? MCU、ADC、DAC 和其它设备
已供物品: 5 裸板,文档
产品目录页面: 659 (CN2011-ZH PDF)
Sensor Overview
Many system applications require the measurement of a
physical or electrical condition, or the presence or absence
of a known physical, electrical or chemical quantity. Analog
sensors are typically used to indicate the magnitude or
change in the environmental condition, by reacting to the
condition and generating a change in an electrical property
as a result.
Typical phenomena that are measured are:
■ ? Electrical Signal and Properties
■ ? Magnetic Signal and Properties
■ ? Temperature
■ ? Humidity
■ ? Force, Weight, Torque and Pressure
■ ? Motion and Vibration
■ ? Flow
■ ? Fluid Level and Volume
■ ? Light and Infrared
■ ? Chemistry/Gas
There are sensors that respond to these phenomena by
producing the following electrical properties:
■ ? Voltage
■ ? Current
■ ? Resistance
■ ? Capacitance
■ ? Charge
This electrical property is then conditioned by an analog
circuit before being converted to a digital circuit. In this way,
the environmental condition can be “measured” and the
system can make decisions based on the result.
The table below provides an overview of typical phenomena,
the type of sensor commonly used to measure the
phenomena and electrical output of the sensor.
For additional information, please refer to Application Note
AN990.
Summary Of Common Physical Conditions and Related Sensor Types
Phenomena
Magnetic
Temperature
Humidity
Force, Weight, Torque, Pressure
Motion and Vibration
Flow
Fluid Level and Volume
Light
Chemical
Sensor
Hall Effect
Magneto-Resistive
Thermocouple
RTD
Thermistor
IC
Infrared
Thermopile
Capacitive
Infrared
Strain Gauge
Load Cell
Piezo-electric
Mechanical Transducer
LVDT
Piezo-electric
Microphone
Ultrasonic
Accelerometer
Magnetic Flowmeter
Mass Flowmeter
Ultrasound/Doppler
Hot-wire Anemometer
Mechanical Transducer (turbine)
Ultrasound
Mechanical Transducer
Capacitor
Switch
Thermal
Photodiode
pH Electrode
Solution Conductivity
CO Sensor
Photodiode (turbidity, colorimeter)
Electrical Output
Voltage
Resistance
Voltage
Resistance
Resistance
Voltage
Current
Voltage
Capacitance
Current
Resistance/Voltage
Resistance
Voltage or Charge
Resistance, Voltage, Capacitance
AC Voltage
Voltage or Charge
Voltage
Voltage, Resistive, Current
Voltage
Voltage
Resistance/Voltage
Frequency
Resistance
Voltage
Time Delay
Resistance, Voltage
Capacitance
On/Off
Voltage
Current
Voltage
Resistance/Current
Voltage or Charge
Current
Signal Chain Design Guide
3
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