- 您现在的位置：买卖IC网 > PDF目录17041 > MCP3422EV (Microchip Technology)BOARD EVAL MCP3422 PICKIT SERIAL PDF资料下载
参数资料
| 型号： | MCP3422EV |
| 厂商： | Microchip Technology |
| 文件页数： | 8/58页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL MCP3422 PICKIT SERIAL |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 1 |
| 系列： | PICkit™ |
| ADC 的数量： | 2 |
| 位数： | 18 |
| 采样率（每秒）： | 3.75 |
| 数据接口： | 串行 |
| 输入范围： | ±2.048 V |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | MCP3422 |
| 已供物品： | 板 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
| 相关产品： | MCP3422A0T-E/SNTR-ND - IC ADC 18BIT 3.75SPS 2CH 8-SOIC MCP3422A0T-E/MSTR-ND - IC ADC 18BIT 3.75SPS 2CH 8-MSOP MCP3422A0T-E/MCTR-ND - IC ADC 18BIT 3.75SPS 2CH 8-DFN MCP3422A0-E/SN-ND - IC ADC 18BIT3.75SPS 2CH 8-SOIC MCP3422A0-E/MS-ND - IC ADC 18BIT 3.75SPS 2CH 8-MSOP MCP3422A0-E/MC-ND - IC ADC 18BIT 3.75SPS 2CH 8-DFN |
第1页第2页第3页第4页第5页第6页第7页当前第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
MCP3422/3/4
DS22088C-page 16
2009 Microchip Technology Inc.
4.9.2
CONVERTING THE DEVICE
OUTPUT CODE TO INPUT SIGNAL
VOLTAGE
When the user gets the digital output codes from the
device as described in Section 4.9.1 “Digital output
code from device”, the next step is converting the
digital output codes to a measured input voltage.
Equation 4-4 shows an example of converting the
output codes to its corresponding input voltage.
If the sign indicator bit (MSB) is ‘0’, the input voltage
is obtained by multiplying the output code with the LSB
and divided by the PGA setting.
If the sign indicator bit (MSB) is ‘1’, the output code
needs to be converted to two’s complement before
multiplied by LSB and divided by the PGA setting.
Table 4-4 shows an example of converting the device
output codes to input voltage.
EQUATION 4-4:
CONVERTING OUTPUT
CODES TO INPUT
VOLTAGE
TABLE 4-4:
EXAMPLE OF CONVERTING OUTPUT CODE TO VOLTAGE (WITH 18 BIT SETTING)
If MSB = 0 (Positive Output Code):
If MSB = 1 (Negative Output Code):
Where:
LSB
=
See Table 4-1
2’s complement
=
1’s complement + 1
Input Voltage
(Output Code)
LSB
PGA
------------
=
Input Voltage
(2
′s complement of Output Code)
LSB
PGA
------------
=
Input Voltage
[CHn+ - CHn-]
PGA]
Digital Output Code
MSB
Example of Converting Output Codes to Input Voltage
≥ V
REF
011111111111111111
0
(2
16+215+214+213+212+211+210+29+28+27+26+25+24+23+22+21+20)
x LSB(15.625
μV)/PGA = 2.048 (V) for PGA = 1
VREF - 1 LSB
011111111111111111
0
(2
16+215+214+213+212+211+210+29+28+27+26+25+24+23+22+21+20)
x LSB(15.625
μV)/PGA = 2.048 (V) for PGA = 1
2LSB
000000000000000010
0
(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+2
1+0)x LSB(15.625
μV)/PGA
= 31.25
(μV) for PGA = 1
1LSB
000000000000000001
0
(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+2
0)x LSB(15.625
μV)/PGA
= 15.625 (
μV)for PGA = 1
0
000000000000000000
0
(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0)x LSB(15.625
μV)/PGA
= 0 V (V) for PGA = 1
-1 LSB
111111111111111111
1
-(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+2
0)x LSB(15.625
μV)/PGA
= - 15.625 (
μV)for PGA = 1
-2 LSB
111111111111111110
1
-(0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+2
1+0)x LSB(15.625
μV)/PGA
= - 31.25 (
μV)for PGA = 1
- VREF
100000000000000000
1
-(2
17+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0) x
LSB(15.625
μV)/PGA = - 2.048 (V) for PGA = 1
≤ -V
REF
100000000000000000
1
-(2
17+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0) x
LSB(15.625
μV)/PGA = - 2.048 (V) for PGA = 1
相关PDF资料 |
PDF描述 |
|---|---|
| RBC10DRXN-S734 | CONN EDGECARD 20POS DIP .100 SLD |
| REC5-053.3DRW/H2/C | CONV DC/DC 5W 4.5-9VIN +/-3.3V |
| RBC10DRXH-S734 | CONN EDGECARD 20POS DIP .100 SLD |
| EEC43DRYN-S13 | CONN EDGECARD 86POS .100 EXTEND |
| EEC43DRYH-S13 | CONN EDGECARD 86POS .100 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP3423 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference |
| MCP3423-E/MC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference |
| MCP3423-E/MF | 功能描述:模数转换器 - ADC 18B delta-sigma ADC dual Ch 4sps 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 |
| MCP3423-E/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference |
| MCP3423-E/SL | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:18-Bit, Multi-Channel ???￡ Analog-to-Digital Converter with I2Ca?￠ Interface and On-Board Reference |
发布紧急采购，3分钟左右您将得到回复。