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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： | 17/20頁 |
| 文件大小： | 326K |
| 代理商： | AD7787 |
AD7787
Continuous Read Mode
Rather than write to the communications register each time a
conversion is complete to access the data, the AD7787 can be
placed in continuous read mode. By writing 00111100
(Channel AIN1) or 00111101 (Channel AIN2) to the
communications register, the user only needs to apply the
appropriate number of SCLK cycles to the ADC, and the 24-bit
word is automatically placed on the DOUT/RDY line when a
conversion is complete.
Rev. 0 | Page 17 of 20
When DOUT/RDY goes low to indicate the end of a
conversion, sufficient SCLK cycles must be applied to the ADC,
and the data conversion is placed on the DOUT/RDY line.
When the conversion is read, DOUT/RDY returns high until
the next conversion is available. In this mode, the data can only
be read once. Also, the user must ensure that the data-word is
read before the next conversion is complete. If the user has not
read the conversion before the completion of the next
conversion, or if insufficient serial clocks are applied to the
AD7787 to read the word, the serial output register is reset
when the next conversion is complete, and the new conversion
is placed in the output serial register.
To exit the continuous read mode, the instruction 001110XX
must be written to the communications register while the RDY
pin is low. While in the continuous read mode, the ADC
monitors activity on the DIN line so that it can receive the
instruction to exit the continuous read mode. Additionally, a
reset occurs if 32 consecutive 1s are seen on DIN. Therefore,
DIN should be held low in continuous read mode until an
instruction is written to the device.
0
DIN
SCLK
DOUT/RDY
CS
0x3C
DATA
DATA
DATA
Figure 15. Continuous Read
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| AD7788ARM | Low Power, 16-/24-Bit Sigma-Delta ADC |
| 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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