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參數資料
| 型號： | AD7621AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 1 LSB INL, 3 MSPS PulSAR ADC |
| 中文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP48 |
| 封裝： | MO-026-BBC, LQFP-48 |
| 文件頁數： | 21/26頁 |
| 文件大?。?/td> | 265K |
| 代理商： | AD7621AST |
REV. Pr D
PRELIMINARY TECHNICAL DATA
AD7621
–21–
PARALLEL INTERFACE
The AD7621 is configured to use the parallel interface
with either a 16-bit or 8-bit bus width. The data can be
read either after each conversion, which is during the
next acquisition phase, or during the following conversion
as shown, respectively, in Figure 15 and Figure 16. When
the data is read during the conversion, however, it is rec-
ommended that it is read only during the first half of the
conversion phase. That avoids any potential feedthrough
between voltage transients on the digital interface and the
most critical analog conversion circuitry.
CURRENT
CONVERSION
BUSY
DATA
BUS
CS
RD
t
12
t
13
Figure 15. Slave Parallel Data Timing for Reading
(Read After Convert)
t
1
t
3
t
4
CS = 0
CNVST, RD
BUSY
PREVIOUS
CONVERSION
t
12
t
13
DATA
BUS
Figure 16. Slave Parallel Data Timing for Reading
(Read During Convert)
CS
A0, A1
Pins D[15:8]
HI-Z
HIGH BYTE
LOW BYTE
HI-Z
HI-Z
HIGH BYTE
LOW BYTE
HI-Z
t12
t12
t13
Pins D[7:0]
RD
Figure 17. 8-Bit and 16-Bit Parallel Interface
t
3
BUSY
CS, RD
CNVST
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
16
D15
D14
D2
D1
D0
X
EXT/INT = 0
RDC/SDIN = 0
INVSCLK = INVSYNC = 0
t
25
t
30
15
14
Figure 18. Master Serial Data Timing for Reading (Read After Convert)
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| AD7621ASTRL | 制造商:Analog Devices 功能描述:ADC Single SAR 3Msps 16-bit Parallel/Serial 48-Pin LQFP T/R |
| AD7621ASTZ | 功能描述:IC ADC 16BIT 2MSPS DIFF 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 |
| AD7621ASTZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit, 2 LSB INL, 3 MSPS PulSAR?? ADC |
| AD7621ASTZRL | 功能描述:IC ADC 16BIT 2MSPS DIFF 48LQFP 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:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD7621ASTZRL1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit, 2 LSB INL, 3 MSPS PulSAR?? ADC |
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