參數(shù)資料
型號: MCP3427-E/MF
廠商: Microchip Technology
文件頁數(shù): 27/56頁
文件大小: 0K
描述: IC ADC 16BIT I2C PROGBL 10-DFN
產(chǎn)品培訓(xùn)模塊: MCP3901 Analog Front End
標(biāo)準(zhǔn)包裝: 120
位數(shù): 16
采樣率(每秒): 15
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
安裝類型: 表面貼裝
封裝/外殼: 10-VFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 10-DFN-EP(3x3)
包裝: 管件
輸入數(shù)目和類型: 2 個差分,單極
產(chǎn)品目錄頁面: 672 (CN2011-ZH PDF)
2009 Microchip Technology Inc.
DS22226A-page 33
MCP3426/7/8
Equation 6-2 shows an example of calculating the
expected number of output code with various PGA gain
settings for Type K thermocouple output.
EQUATION 6-2:
EXPECTED NUMBER OF
OUTPUT CODE FOR TYPE
K THERMOCOUPLE
FIGURE 6-7:
Example of Pressure and Temperature Measurement.
log
2
50 mV
62.5
μV
PGA
------------------
= 9.6 bits for PGA = 1
= 10.6 bits for PGA = 2
= 11.6 bits for PGA = 4
= 12.6 bits for PGA = 8
Expected
Number of Output Code =
Where:
1 LSB
=
62.5 V with 16 Bit configuration.
800
PGA
()
ln
2
()
ln
-------------------------------------
=
5k
Ω
VDD
4
5
6
9
CH2-
VSS
CH3+
Adr1
Adr0
3
12
CH2+
CH3-
2
13
CH1-
CH4+
1
14
CH1+
CH4-
7
8
SDA
SCL
VDD
MCP3428
11
10
0.1 F
10 F
TO MCU
(MASTER)
5k
Ω
VDD
Thermistor
VDD
Pressure Sensor
VDD
R1
R2
Thermistor
R2
R1
R1 and R2 = Voltage Divider
V
IN
R
2
R
1
R
2
+
------------------
V
DD
×
=
(NPP301)
Pressure Sensor
(NPP301)
VIN
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