- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2097 > MCP3427-E/MF (Microchip Technology)IC ADC 16BIT I2C PROGBL 10-DFN PDF資料下載
參數(shù)資料
| 型號： | MCP3427-E/MF |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 25/56頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT I2C PROGBL 10-DFN |
| 產(chǎn)品培訓模塊： | MCP3901 Analog Front End |
| 標準包裝： | 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 |
| 供應商設備封裝： | 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) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
2009 Microchip Technology Inc.
DS22226A-page 31
MCP3426/7/8
6.2
Application Examples
The MCP3426/7/8 devices can be used for broad
ranges of sensor and data acquisition applications.
Figure 6-5 shows a circuit example measuring both the
battery voltage and current using the MCP3426 device.
Channels 1 and 2 are measuring the voltage and the
current, respectively.
When the input voltage is greater than the internal
reference voltage (VREF = 2.048V), it needs a voltage
divider circuit to prevent the output code from being
saturated. In the example, R1 and R2 form a voltage
divider. The R1 and R2 are set to yield VIN to be less
than the internal reference voltage (VREF = 2.048V).
For the current measurement, the device measure the
voltage across the current sensor, and converts it by
dividing the measured voltage by a known resistance
value. The voltage drops across the sensor is waste.
Therefore, the current measurement often prefers to
use a current sensor with smaller resistance value,
which, in turn, requires high resolution ADC device.
The device can measure the input voltage as low as
7.8 V range (or current in ~ A range) with 16 bit
resolution and PGA = 8 settings.
The MSB (= sign bit) of the output code determines the
direction of the current, which identifies the charging or
the discharging current.
FIGURE 6-5:
Battery Voltage and Charging/Discharging Current Measurement.
5k
Ω
VDD
VSS
0.1 F
10 F
TO MCU
(MASTER)
SCL
SDA
5k
Ω
CH2+
SCL
CH2-
R1
R2
Battery
(Rechargeable)
2
3
4
5
6
7
CH1-
SDA
1
8
CH1+
VDD
Current Sensor
To Load
To Battery
Discharging Current
Charging
Current
R1 and R2 = Voltage Divider
V
IN
R
2
R
1
R
2
+
------------------
V
BAT
×
=
VIN
MCP3426
VBAT
相關PDF資料 |
PDF描述 |
|---|---|
| MCP3550T-60E/MS | IC ADC 22BIT 2.7V 1CH 8MSOP |
| MCP6541RT-I/OT | IC COMP 1.6V PUSH-PULL SOT23-5 |
| MCP6546UT-I/LT | IC COMP 1.6V SNGL O-D SC70-5 |
| MCP6561UT-E/OT | IC COMP PUSH-PULL 1.8V SOT23-5 |
| MCP6566RT-E/OT | IC COMPARATOR O-D 1.8V SOT23-5 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCP3427-EMS | 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 |
| MCP3427-ESL | 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 |
| MCP3427-ESN | 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 |
| MCP3427-EST | 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 |
| MCP3427-EUN | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。