- 您现在的位置：买卖IC网 > PDF目录2097 > MCP3424T-E/ST (Microchip Technology)IC ADC 18BIT 3.75SPS 4CH 14TSSOP PDF资料下载
参数资料
| 型号： | MCP3424T-E/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 27/58页 |
| 文件大小： | 0K |
| 描述： | IC ADC 18BIT 3.75SPS 4CH 14TSSOP |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 2,500 |
| 位数： | 18 |
| 采样率（每秒）： | 3.75 |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，双极；4 个差分，双极 |
| 配用： | MCP3424EV-ND - EVALUATION BOARD FOR MCP3424 |
| 其它名称： | MCP3424T-E/STTR |
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页当前第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页
2009 Microchip Technology Inc.
DS22088C-page 33
MCP3422/3/4
6.2
Application Examples
The MCP3422/3/4 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 MCP3422 device.
Channels 1 and 2 are measuring the voltage and the
current, respectively.
When the input voltage is greater than the internal ref-
erence 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
2 V range (or current in ~ A range) with 18 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
VBAT
MCP3422
相关PDF资料 |
PDF描述 |
|---|---|
| MCP3425A0T-E/CH | IC ADC 16BIT I2C PROGBL SOT23-6 |
| MCP3427-E/MF | IC ADC 16BIT I2C PROGBL 10-DFN |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP3425 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3425_09 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| MCP3425A0T-E/CH | 功能描述:模数转换器 - ADC 16-B delta-sigma ADC Sngl Ch 15sps RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MCP3425A0T-E/CH | 制造商:Microchip Technology Inc 功能描述:A/D CONVERTER (A-D) IC |
| MCP3425A0TECH | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:16-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference |
发布紧急采购，3分钟左右您将得到回复。