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參數(shù)資料
| 型號： | MCP3425EV |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 9/38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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2009 Microchip Technology Inc.
DS22072B-page 17
MCP3425
5.3.3
READING DATA FROM THE DEVICE
When the Master sends a read command (R/W = 1),
the MCP3425 outputs the conversion data bytes and
configuration byte. Each byte consists of 8 bits with
one acknowledge (ACK) bit. The ACK bit after the
address byte is issued by the MCP3425 and the ACK
bits after each conversion data bytes are issued by the
Master.
When the device receives a read command, it outputs
two data bytes followed by a configuration register. In
16 bit-conversion mode, the MSB (= sign bit) of the first
data byte is D15. In 14-bit conversion mode, the first
two bits in the first data byte are repeated MSB bits and
can be ignored, and the 3rd bit (D13) is the MSB (=sign
bit) of the conversion data. In 12-bit conversion mode,
the first four bits are repeated MSB bits and can be
ignored. The 5th bit (D11) of the byte represents the
MSB (= sign bit) of the conversion data. Table 5-3
summarizes the conversion data output of each
conversion mode.
The configuration byte follows the output data bytes.
The device repeatedly outputs the configuration byte
only if the Master sends clocks repeatedly after the
data bytes.
The device terminates the current outputs when it
receives a Not-Acknowledge (NAK), a repeated start or
a stop bit at any time during the output bit stream. It is
not required to read the configuration byte. However,
the Master may read the configuration byte to check
the RDY bit condition.The Master may continuously
send clock (SCL) to repeatedly read the configuration
byte (to check the RDY bit status).
Figure 5-3 shows the timing diagrams of the reading.
TABLE 5-3:
OUTPUT CODES OF EACH RESOLUTION OPTION
Conversion
Option
Digital Output Codes
16-bits
D15 ~ D8 (1st data byte) - D7 ~ D0 (2nd data byte) - Configuration byte. (Note 1)
14-bits
MMD13 ~ D8 (1st data byte) - D7 ~ D0 (2nd data byte) - Configuration byte. (Note 2)
12-bits
MMMMD11 ~ D8 (1st data byte) - D7 ~ D0 (2nd data byte) - Configuration byte. (Note 3)
Note 1:
D15 is MSB (= sign bit).
2:
D13 is MSB (= sign bit), M is repeated MSB of the data byte.
3:
D11 is MSB (= sign bit), M is repeated MSB of the data byte.
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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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