- 您现在的位置：买卖IC网 > PDF目录17298 > TMPSNSRD-TCPL1 (Microchip Technology)BOARD RTD REFERENCE DESIGN PDF资料下载
参数资料
| 型号： | TMPSNSRD-TCPL1 |
| 厂商： | Microchip Technology |
| 文件页数： | 10/30页 |
| 文件大小： | 0K |
| 描述： | BOARD RTD REFERENCE DESIGN |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 1 |
| 传感器类型： | 温度，热电偶 |
| 嵌入式： | 否 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MCP3421，MCP9804 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
Delta-Sigma ADCs
Voltage and Current Measurment Using
MCP3422 Analog-to-Digital Converter (ADC) Feature Summary
Delta-Sigma ADCs
The MCP342X family devices are easy-to-use high precision
delta sigma ADC devices from Microchip. These devices have
an internal reference (2.048V) with a user programmable
PGA (x1, x2, x4, x8). The ADC resolution is programmable as
12-bit, 14-bit, 16-bit or 18-bit by the user.
This ADC family offers single, dual and four differential
input channels. Because of its simplicity and low price, this
device family can be used for various applications from
simple voltage and current measurement to high precision
temperature measurement.
Voltage Measurement Using MCP3421 Device
R 1
Bit Resolution
Number of Differential Input
Channels
Internal Programmable Gain
Amplifier
INL Error (Typical)
Offset Error (Typical)
Internal Reference Voltage
Output Noise (Typical)
Gain Error (Typical)
Interface
18 bits (User can select 18-, 16-,
14- or 12-bit options)
2
x1, x2, x4 or x8 (user option)
10 PPM of full scale range
15 μV
2.048V
1.5 μVrms
0.05% of full scale range
I 2 C?
+
ADC
V BAT
+
ADC
V BAT
R 2
–
MCP3421
–
MCP3421
(a) If V REF < V BAT
MCU
(b) If V REF > V BAT
MCU
V IN = ( R1 + R2 ) ● ( V BAT )
VMeasured = ADC Output Codes ● LSB ● _________ ● _____
LSB = ________________
LSB of 18-bit ADC = ________________ = ______ = 15.625 μV
R2
________
( R1 + R2 ) 1
R2 PGA
Reference Voltage
2 N –1
Reference Voltage 2.048V
2 N –1 2 17
Current Measurement Using MCP3421 Device
Wireless Temperature Monitoring Solution
Charging
Current Sensor
To Load
Discharging
2.4 GHz
Current
+
–
Current
Heat
18-bit ? ∑ ADC
Battery
ADC
MCP3421
+
MCP3421
MRF24J40
–
(Thermocouple)
MCP9804
10
MCU
Current = (Measured Voltage)/(Known Resistance Value of Current Sensor)
Direction of current is determined by sign bit (MSB bit) of the ADC output code.
Signal Chain Design Guide
Temp Sensor
±1°C
PIC ? MCU
相关PDF资料 |
PDF描述 |
|---|---|
| TMPSNSRD-RTD2 | BOARD RTD REFERENCE DESIGN |
| IR2183PBF | IC DRIVER HALF BRIDGE 8DIP |
| IR21814SPBF | IC DRIVER HIGH/LOW SIDE 14SOIC |
| IR1167BSTRPBF | IC SMART SECONDARY DRIVER 8-SOIC |
| IR21814PBF | IC DRIVER HIGH/LOW SIDE 14DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TMPSNS-RTD1 | 功能描述:开发板和工具包 - PIC / DSPIC RTD Temp Sensor Demo Brd RoHS:否 制造商:Microchip Technology 产品:Starter Kits 工具用于评估:chipKIT 核心:Uno32 接口类型: 工作电源电压: |
| TMPT2369ALT | 制造商:ALL 功能描述:ALLEGRO NXC7D |
| TMPT2SU1 | 制造商:Red Lion Controls 功能描述:THERMOCOUPLE TEMP PROBE, TYPE T, 400?F 制造商:Red Lion Controls 功能描述:TYPE T 400DEG F |
| TMPT3906LT | 制造商:ALL 功能描述:ALLEGRO S9K3A |
| TMPT5089LT | 制造商:Allegro MicroSystems LLC 功能描述:Bipolar Junction Transistor, NPN Type, TO-236 |
发布紧急采购，3分钟左右您将得到回复。