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參數(shù)資料
| 型號(hào)： | MCP3425A0T-E/CH |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 5/38頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT I2C PROGBL SOT23-6 |
| 產(chǎn)品培訓(xùn)模塊： | MCP3901 Analog Front End |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 輸入數(shù)目和類型： | 2 個(gè)單端，雙極；1 個(gè)差分，雙極 |
| 產(chǎn)品目錄頁(yè)面： | 672 (CN2011-ZH PDF) |
| 配用： | MCP3425EV-ND - EVALUATION BOARD FOR MCP3425 |
| 其它名稱： | MCP3425A0T-E/CHDKR |
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2009 Microchip Technology Inc.
DS22072B-page 13
MCP3425
5.0
USING THE MCP3425 DEVICE
5.1
Operating Modes
The user operates the device by setting up the device
configuration register using a write command (see
Figure 5-2) and reads the conversion data using a read
command (see Figure 5-3). The device operates in two
modes: (a) Continuous Conversion Mode or (b) One-
Shot Conversion Mode (single conversion). This mode
selection is made by setting the O/C bit in the
Configuration
Register.
Refer
to
“Configuration Register” for more information.
5.1.1
CONTINUOUS CONVERSION
MODE (O/C BIT = 1)
The device performs a Continuous Conversion if the O/
C bit is set to logic “high”. Once the conversion is
completed, RDY bit is toggled to ‘0’ and the result is
placed at the output data register. The device
immediately begins another conversion and overwrites
the output data register with the most recent result. The
device clears the data ready flag (RDY bit = 0) when
the conversion is completed. The device sets the ready
flag bit (RDY bit = 1), if the latest conversion result has
been read by the Master.
When writing configuration register:
- Setting RDY bit in continuous mode does not
affect anything
When reading conversion data:
- RDY bit = 0 means the latest conversion
result is ready
- RDY bit = 1 means the conversion result is
not updated since the last reading. A new
conversion is under processing and the RDY
bit will be cleared when the new conversion
result is ready
5.1.2
ONE-SHOT CONVERSION MODE
(O/C BIT = 0)
Once the One-Shot Conversion (single conversion)
Mode is selected, the device performs only one
conversion, updates the output data register, clears the
data ready flag (RDY = 0), and then enters a low power
standby mode. A new One-Shot Conversion is started
again when the device receives a new write command
with RDY = 1.
When writing configuration register:
- The RDY bit needs to be set to begin a new
conversion in one-shot mode
When reading conversion data:
- RDY bit = 0 means the latest conversion
result is ready
- RDY bit = 1 means the conversion result is
not updated since the last reading. A new
conversion is under processing and the RDY
bit will be cleared when the new conversion is
done
This One-Shot Conversion Mode is recommended for
low power operating applications. During the low
current standby mode, the device consumes less than
1 A typical. For example, if the device converts only
one time per second with 16 bit resolution, the total
current draw is only about one fourth of the draws in
continuous
mode.
In
this
example,
the
device
consumes approximately 9.7 A (= ~145 A/15 SPS),
if the device performs only one conversion per second
(1 SPS) in 16-bit conversion mode with 3V power
supply.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP3425A1T-E/CH | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 18bit deltasigma ADC single channel, 4sps 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 |
| MCP3425A1TECH | 制造商:MICROCHIP 制造商全稱: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:模數(shù)轉(zhuǎn)換器 - ADC 18bit deltasigma ADC single channel, 4sps 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 |
| MCP3425A2TECH | 制造商:MICROCHIP 制造商全稱: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:模數(shù)轉(zhuǎn)換器 - ADC 18bit deltasigma ADC single channel, 4sps 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 |
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