參數(shù)資料
型號(hào)： MCP3424-E/ST
廠(chǎng)商： Microchip Technology
文件頁(yè)數(shù)： 28/58頁(yè)
文件大?。?/td> 0K
描述： IC ADC 18BIT 3.75SPS 4CH 14TSSOP
產(chǎn)品培訓(xùn)模塊： MCP3901 Analog Front End
標(biāo)準(zhǔn)包裝： 96
位數(shù)： 18
采樣率（每秒）： 3.75
數(shù)據(jù)接口： I²C，串行
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 管件
輸入數(shù)目和類(lèi)型： 8 個(gè)單端，雙極；4 個(gè)差分，雙極
產(chǎn)品目錄頁(yè)面： 672 (CN2011-ZH PDF)
配用： MCP3424EV-ND - EVALUATION BOARD FOR MCP3424
MCP3422/3/4
DS22088C-page 34
2009 Microchip Technology Inc.
shows
an
example
of
using
the
MCP3424 for four-channel thermocouple temperature
measurement applications.
FIGURE 6-6:
Four-Channel Thermocouple Applications.
With
Type
K
thermocouple,
it
can
measure
temperature from 0°C to 1250°C degrees. The full
scale output range of the Type K thermocouple is
about 50 mV. This provides 40 V/°C (= 50 mV/
1250°C) of measurement resolution. Equation 6-1
shows the measurement budget for sensor signal using
the
MCP3422/3/4
device
with
18 bits
and
PGA = 8 settings.
With
this
configuration,
the
MCP3424 can detect the input signal level as low as
approximately 2 V. The internal PGA boosts the input
signal level eight times. The 40 V/°C input from the
thermocouple is amplified internally to 320 V/°C
before the conversion takes place. This results in
20.48 LSB/°C output codes. This means there are
about 20 LSB output codes (or about 4.32 bits) per 1°C
of change in temperature.
EQUATION 6-1:
5k
Ω
VDD
4
5
6
9
CH2-
VSS
CH3+
3
12
CH2+
CH3-
2
13
CH1-
CH4+
1
14
CH1+
CH4-
7
8
SDA
SCL
VDD
11
10
0.1 F
10 F
TO MCU
(MASTER)
MCP9800
Isothermal Block
Thermocouple Sensor
Heat
SCL
SDA
SCL
SDA
SCL
VDD
SDA
SCL
SDA
SCL
Adr1
Adr0
5k
Ω
MCP3424
Input Signal Level after gain of 8:
Where:
1 LSB
=
15.625 V with 18 bit configuration
Detectable Input Signal Level
15.625
μV/PGA
=
1.953125
μV for PGA 8
=
40
μV/°C
() 8
320
μV/°C
=
=
No. of LSB/°C
320
μV/°C
15.625
μV
-------------------------
20.48 Codes/°C
==
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP3424EV 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 MCP3424 ADC Eval Board RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
MCP3424T-E/MC 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference
MCP3424T-E/MF 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference
MCP3424T-E/MS 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference
MCP3424T-E/SL 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 18B delta-sigma ADC dual Ch 4sps 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
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