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參數資料
| 型號： | AD7651AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit 100 kSPS PulSAR Unipolar ADC with Reference |
| 中文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP48 |
| 封裝： | MS-026BBC, LQFP-48 |
| 文件頁數： | 21/28頁 |
| 文件大?。?/td> | 709K |
| 代理商： | AD7651AST |
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AD7651
MASTER SERIAL INTERFACE
Internal Clock
The AD7651 is configured to generate and provide the serial data
clock SCLK when the EXT/INT pin is held LOW. The AD7651 also
generates a SYNC signal to indicate to the host when the serial data
is valid. The serial clock SCLK and the SYNC signal can be inverted
if desired. Depending on the RDC/SDIN input, the data can be read
after each conversion or during the following conversion. Figure 32
and Figure 33 show detailed timing diagrams of these two modes.
Usually, because the AD7651 has a longer acquisition phase than
the conversion phase, the data is read immediately after conversion.
This makes the Master Read After Conversion the most recom-
mended serial mode when it can be used. In this mode, it should be
noted that unlike in other modes, the BUSY signal returns LOW
after the 16 data bits are pulsed out and not at the end of the
conversion phase, which results in a longer BUSY width.
In the Read During Conversion mode, the serial clock and data
toggle at appropriate instants, which minimize potential feed-
through between digital activity and critical conversion decisions
t
3
BUSY
SYNC
SCLK
SDOUT
t
28
t
29
t
14
t
18
t
19
t
20
t
21
t
24
t
26
t
27
t
23
t
22
t
16
t
15
1
2
3
14
15
16
D15
D14
D2
D1
D0
X
RDC/SDIN = 0
INVSCLK = INVSYNC = 0
t
25
t
30
02964-0-015
CNVST
CS, RD
EXT/INT = 0
Figure 32. Master Serial Data Timing for Reading (Read after Convert)
EXT/INT = 0
RDC/SDIN = 1
INVSCLK = INVSYNC = 0
t
3
t
1
t
17
t
14
t
19
t
20
t
21
t
24
t
26
t
25
t
27
t
23
t
22
t
16
t
15
D15
D14
D2
D1
D0
X
1
2
3
14
15
16
t
18
BUSY
SYNC
SCLK
SDOUT
02964-0-016
CNVST
CS, RD
Figure 33. Master Serial Data Timing for Reading (Read Previous Conversion during Convert)
Rev. 0 | Page 21 of 28
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7651ASTRL | 制造商:Analog Devices 功能描述: |
| AD7651ASTZ | 功能描述:IC ADC 16BIT 100KSPS 48-LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7651ASTZ | 制造商:Analog Devices 功能描述:16BIT SAR ADC REF 7651 LQFP48 |
| AD7651ASTZRL | 功能描述:IC ADC 16BIT UNIPOLAR 48LFCSP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7652 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit 1 MSPS SAR Unipolar ADC with Ref |
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