參數(shù)資料
型號(hào)： MCP3425EV
廠商： Microchip Technology
文件頁(yè)數(shù)： 21/38頁(yè)
文件大小： 0K
描述： EVALUATION BOARD FOR MCP3425
產(chǎn)品培訓(xùn)模塊： MCP3901 Analog Front End
標(biāo)準(zhǔn)包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 15 ~ 240
數(shù)據(jù)接口： I²C
輸入范圍： ±2.048 V
工作溫度： -40°C ~ 125°C
已用 IC / 零件： MCP3425
已供物品： 板
產(chǎn)品目錄頁(yè)面： 672 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： MCP3425A0T-E/CHDKR-ND - IC ADC 16BIT I2C PROGBL SOT23-6
MCP3425A0T-E/CHCT-ND - IC ADC 16BIT I2C PROGBL SOT23-6
MCP3425A0T-E/CHTR-ND - IC ADC 16BIT I2C PROGBL SOT23-6
MCP3425
DS22072B-page 28
2009 Microchip Technology Inc.
FIGURE 6-7:
Example of Pressure
Measurement.
6.2.4
WHEATSTONE BRIDGE TYPE
SENSORS WITH SIGNAL
CONDITIONING
Wheatstone bridge is one of the most common
configurations in the sensor applications. Strain
gauges and pressure sensors are the common
examples. When the sensor output signal is small and
the common mode noise level is large, it needs a signal
conditioning circuit between the sensor and the
MCP3425. Figure 6-8 and Figure 6-9 show examples
of using the MCP6V01 (high precision auto-zeroed Op
Amp) for the sensor signal conditioning. Figure 6-8
shows the interface circuit with a minimum of
components between the sensor and the MCP3425,
but it is not symmetric, and therefore, the ADC input
becomes a single ended. On the other hand, the
Figure 6-9 has a symmetric and differential output, but
requires more components.
FIGURE 6-8:
Simple Signal Conditioning
Design with Asymmetric Circuit.
FIGURE 6-9:
High Performance Signal
Conditioning Design with Symmetric Circuit.
6.2.5
TEMPERATURE MEASUREMENT
shows
an
example
of
temperature
measurement using a thermistor. This example can
achieve a linear response over a 50
°C temperature
range. This can be implemented using a standard
resistor with 1% tolerance in series with the thermistor.
The value of the resistor is selected to be equal to the
thermistor value at the mid-point of the desired
temperature range.
FIGURE 6-10:
Example of Temperature
Measurement.
NPP301
MCP3425
VIN+
VIN-
VDD
VSS
1
2
3
4
5
6
SCL
SDL
10 F
0.1 F
R
VDD
TO MCU
(MASTER)
VDD
VDD
RR
100R
C
MCP6V01
VDD
0.2R
3k
Ω
MCP3425
20 k
Ω
1F
20 k
Ω
1F
VDD
1/2 MCP6V02
200
Ω
200
Ω
3k
Ω
3k
Ω
1F
RR
VDD
10 nF
200
Ω
MCP3425
200
Ω
10 k
Ω
Resistor
10 k
Ω
Thermistor
MCP3425
VIN+
VIN-
VDD
VSS
1
2
3
4
5
6
SCL
SDL
10 F
0.1 F
Rpull-up
VDD
TO MCU (MASTER)
VDD
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參數(shù)描述
MCP3426 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:16-Bit, Multi-Channel Analog-to-Digital Converter with I2C Interface and On-Board Reference
MCP3426A0-E/MC 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MCP3426A0-E/MS 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MCP3426A0-E/SN 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MCP3426A0-E/SN 制造商:Microchip Technology Inc 功能描述:A/D (A-D) CONVERTER IC
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