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| 型号： | MCP3425A0T-E/CH |
| 厂商： | Microchip Technology |
| 文件页数： | 19/38页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT I2C PROGBL SOT23-6 |
| 产品培训模块： | MCP3901 Analog Front End |
| 标准包装： | 1 |
| 位数： | 16 |
| 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： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 输入数目和类型： | 2 个单端，双极；1 个差分，双极 |
| 产品目录页面： | 672 (CN2011-ZH PDF) |
| 配用： | MCP3425EV-ND - EVALUATION BOARD FOR MCP3425 |
| 其它名称： | MCP3425A0T-E/CHDKR |
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MCP3425
DS22072B-page 26
2009 Microchip Technology Inc.
6.1.3
DEVICE COMMUNICATION TEST
The user can test the communication between the
Master (MCU) and the MCP3425 by simply checking
an acknowledge response from the MCP3425 after
sending a read or write command. Here is an example
using Figure 6-3:
a)
Set the R/W bit “LOW” in the address byte.
b)
Check the ACK pulse after sending the
address byte.
If the device acknowledges (ACK = 0), then the
device
is
connected,
otherwise
it
is
not
connected.
c)
Send a STOP bit.
FIGURE 6-3:
I2C Bus Communications
Test.
6.1.4
DIFFERENTIAL AND SINGLE-
ENDED CONFIGURATION
Figure 6-4 shows typical connection examples for
differential and single-ended inputs. Differential input
signals are connected to the VIN+ and VIN- input pins.
For the single-ended input, the input signal is applied to
one of the input pins (typically connected to the
VIN+ pin) while the other input pin (typically VIN- pin)
is grounded. All device characteristics hold for the
single-ended configuration, but this configuration loses
one bit resolution because the input can only stand in
positive half scale. Refer to Section 1.0 “Electrical
FIGURE 6-4:
Differential and Single-
Ended Input Connections.
12
3
4
5
6
7
8
9
SCL
SDA
11
0
1A2 A1 A0 0
Start
Bit
Address Byte
Address bits
ADC Section
R/W
Stop
Bit
MCP3425
AC
K
Response
Device Code
(a) Differential Input Signal Connection:
Input Signal
(b) Single-ended Input Signal Connection:
Input Signal
Sensor
Excitation
R1
R2
VIN+
VIN-
MCP3425
VDD
VIN+
VIN-
MCP3425
VDD
C1
C2
C1
C2
C1 : 0.1 F, Ceramic Capacitor
C2 : 10 F, Tantalum Capacitor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP3425A1T-E/CH | 功能描述:模数转换器 - ADC 18bit deltasigma ADC single channel, 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 |
| MCP3425A1TECH | 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 |
| MCP3425A2T-E/CH | 功能描述:模数转换器 - ADC 18bit deltasigma ADC single channel, 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 |
| MCP3425A2TECH | 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 |
| MCP3425A3T-E/CH | 功能描述:模数转换器 - ADC 18bit deltasigma ADC single channel, 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 |
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