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參數(shù)資料
| 型號(hào)： | MCP3425EV |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 19/38頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVALUATION BOARD FOR MCP3425 |
| 產(chǎn)品培訓(xùn)模塊： | MCP3901 Analog Front End |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 15 ~ 240 |
| 數(shù)據(jù)接口： | I²C |
| 輸入范圍： | ±2.048 V |
| 工作溫度： | -40°C ~ 125°C |
| 已用 IC / 零件： | MCP3425 |
| 已供物品： | 板 |
| 產(chǎn)品目錄頁面： | 672 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | MCP3425A0T-E/CHDKR-ND - IC ADC 16BIT I2C PROGBL SOT23-6 MCP3425A0T-E/CHCT-ND - IC ADC 16BIT I2C PROGBL SOT23-6 MCP3425A0T-E/CHTR-ND - IC ADC 16BIT I2C PROGBL SOT23-6 |
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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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP3426 | 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 |
| MCP3426A0-E/MC | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3426A0-E/MS | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3426A0-E/SN | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit delta-sigma ADC dual chan 15sps RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3426A0-E/SN | 制造商:Microchip Technology Inc 功能描述:A/D (A-D) CONVERTER IC |
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