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| 型號： | MCP3421A3T-E/CH |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 7/42頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 18BIT 3.75SPS 1CH SOT23-6 |
| 產(chǎn)品培訓(xùn)模塊： | MCP3901 Analog Front End |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 18 |
| 采樣率（每秒）： | 3.75 |
| 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 個單端，雙極；1 個差分，單極 |
| 產(chǎn)品目錄頁面： | 672 (CN2011-ZH PDF) |
| 其它名稱： | MCP3421A3T-E/CHDKR |
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2009 Microchip Technology Inc.
DS22003E-page 15
MCP3421
5.0
USING THE MCP3421 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 and Figure 5-4). 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
Section 5.2 “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
highly
recommended for low power operating applications
where the conversion result is needed by request on
demand. During the low current standby mode, the
device consumes less than 1 A maximum (or 300 nA
typical). For example, if the user collects 18 bit
conversion
data
once
a
second
in
One-Shot
Conversion mode, the device draws only about one
fourth of its total operating current. In this example, the
device consumes approximately 39 A (145 A / 3.75
SPS = 39 A), if the device performs only one
conversion per second (1 SPS) in 18-bit conversion
mode with 3V power supply.
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| MCP3421A4T-E/CH | 制造商:Microchip Technology Inc 功能描述:ANALOG-TO-DIGITAL CONVERTER WITH 18-BIT 制造商:Microchip Technology Inc 功能描述:18-BIT DELTA-SIGMA ADC, SINGLE CHANNEL, 4SPS - Tape and Reel 制造商:Microchip Technology Inc 功能描述:IC ADC 18BIT I2C 4SPS SOT23-6 制造商:Microchip Technology Inc 功能描述:18-bit delta-sigma ADC, single channel, 4sps, 6 SOT-23 T/R |
| MCP3421A4T-E/OT | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference |
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| MCP3421A5T-E/OT | 功能描述:IC ADC 18BIT 3.75SPS SOT23-6 RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 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:帶卷 (TR) 輸入數(shù)目和類型:- |
| MCP3421A6T-E/CH | 制造商:Microchip Technology 功能描述:18-BIT DELTA-SIGMA ADC, SINGLE 制造商:Microchip Technology Inc 功能描述:18-BIT DELTA-SIGMA ADC, SINGLE CHANNEL, 4SPS - Tape and Reel 制造商:Microchip Technology Inc 功能描述:IC ADC 18BIT I2C 4SPS SOT23-6 |
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