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參數資料
| 型號： | AD7787 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Power, 2-Channel 24-Bit Sigma-Delta ADC |
| 中文描述： | 低功耗，雙通道24位Σ-Δ模數轉換器 |
| 文件頁數： | 16/20頁 |
| 文件大小： | 326K |
| 代理商： | AD7787 |
AD7787
Single Conversion Mode
In single conversion mode, the AD7787 is placed in shutdown
mode between conversions. When a single conversion is
initiated by setting MD1 to 1 and MD0 to 0 in the mode
register, the AD7787 powers up, performs a single conversion,
and then returns to shutdown mode. When a single conversion
is initiated, the AD7787’s oscillator requires 1 ms to power up
and settle. The AD7787 then performs a conversion which
requires 2 × t
ADC
. DOUT/RDY is high while the conversion is
being performed and goes low to indicate the completion of the
conversion. When the data word has been read from the data
register, DOUT/RDY goes high. If CS is low, DOUT/RDY
remains high until another conversion is initiated and
completed. The data register can be read several times, if
required, even when DOUT/RDY has gone high.
Rev. 0 | Page 16 of 20
Continuous Conversion Mode
This is the default power-up mode. The AD7787 will
continuously converts with the RDY pin in the status register
going low each time a conversion is complete. If CS is low, the
DOUT/RDY line also goes low when a conversion is complete.
To read a conversion, the user can write to the communications
register, indicating that the next operation is a read of the data
register. The digital conversion is placed on the DOUT/RDY
pin as soon as SCLK pulses are applied to the ADC.
DOUT/RDY returns high when the conversion is read. The user
can read this register additional times, if required. However, the
user must ensure that the data register is not being accessed at
the completion of the next conversion or the new conversion
word is lost.
0
DIN
SCLK
DOUT/RDY
CS
0x38
0x38
DATA
DATA
Figure 14. Continuous Conversion
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| AD7788ARM-REEL | Low Power, 16-/24-Bit Sigma-Delta ADC |
| AD7789BRM | Low Power, 16-/24-Bit Sigma-Delta ADC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7787_13 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, 2-Channel 24-Bit Sigma-Delta ADC |
| AD7787BRM | 功能描述:IC ADC 24BIT LP 2CH SIG 10-MSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7787BRM-REEL | 功能描述:IC ADC 24BIT LP 2CH SIG 10-MSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7787BRMZ | 功能描述:IC ADC 24BIT 2CH LP SIG 10MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7787BRMZ | 制造商:Analog Devices 功能描述:IC 24BIT ADC SMD 7787 MSOP10 |
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