- 您現在的位置：買賣IC網 > PDF目錄373926 > AD7911AUJ-REEL7 (ANALOG DEVICES INC) 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs PDF資料下載
參數資料
| 型號： | AD7911AUJ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| 中文描述： | 2-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | MO-193BA, TSOT-23 |
| 文件頁數： | 8/28頁 |
| 文件大小： | 312K |
| 代理商： | AD7911AUJ-REEL7 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD7911/AD7921
TIMING EXAMPLES
Figure 6 and Figure 7 show some of the timing parameters from
the Timing Specifications section.
Timing Example 1
As shown in Figure 7, when
f
SCLK
= 5 MHz and the throughput is
250 kSPS, the cycle time is
Rev. 0 | Page 8 of 28
t
2
+ 12.5(1/
f
SCLK
) +
t
ACQ
= 4 μs
With
t
2
= 10 ns minimum, then
t
ACQ
is 1.49 μs, which satisfies
the requirement of 290 ns for
t
ACQ
.
In Figure 7,
t
ACQ
is comprised of 2.5(1/
f
SCLK
) +
t
10
+
t
QUIET
, where
t
10
= 30 ns maximum. This allows a value of 960 ns for
t
QUIET
,
satisfying the minimum requirement of 30 ns.
Timing Example 2
The AD7921 can also operate with slower clock frequencies. As
shown in Figure 7, when
f
SCLK
= 2 MHz and the throughput rate
is 100 KSPS, the cycle time is
t
2
+ 12.5(1/
f
SCLK
) +
t
ACQ
= 10 μs
With
t
2
= 10 ns minimum, then
t
ACQ
is 3.74 μs, which satisfies
the requirement of 290 ns for t
ACQ
.
In Figure 7,
t
ACQ
is comprised of 2.5(1/
f
SCLK
) +
t
10
+
t
QUIET
, where
t
10
= 30 ns maximum. This allows a value of 2.46 μs for
t
QUIET
,
satisfying the minimum requirement of 30 ns.
In this example, as with other slower clock values, the signal
might already be acquired before the conversion is complete,
but it is still necessary to leave 30 ns minimum
t
QUIET
between
conversions. In this example, the signal should be fully acquired
at approximately point C in Figure 7.
0
ZERO
X
1
2
3
4
5
13
14
t
5
15
16
X
CHN
X
X
X
X
X
X
CHN
X
DB11
DB10
DB2
DB1
DB0
Z
t
2
t
6
t
4
t
8
t
9
t
3
t
7
t
10
t
1
t
QUIET
t
CONVERT
SCLK
CS
DOUT
THREE-STATE
THREE-STATE
DIN
B
Figure 6. AD7921 Serial Interface Timing Diagram
0
1
2
3
4
5
13
14
15
t
10
16
t
QUIET
t
ACQUISITION
1/THROUGHPUT
12.5(1/f
SCLK
)
t
CONVERT
B
C
SCLK
CS
t
2
Figure 7. Serial Interface Timing Example
相關PDF資料 |
PDF描述 |
|---|---|
| AD7921 | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| AD7921ARM | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| AD7921ARM-REEL | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| AD7921ARM-REEL7 | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| AD7921AUJ-R2 | 2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7911AUJZ-R2 | 功能描述:IC ADC 10BIT 250KSPS TSOT23-8 RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率（每秒）:15 數據接口:MICROWIRE?，串行，SPI? 轉換器數目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7911AUJZ-REEL7 | 功能描述:IC ADC 10BIT 250KSPS TSOT23-8 RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率（每秒）:15 數據接口:MICROWIRE?，串行，SPI? 轉換器數目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7912 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs |
| AD7912ARM | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 10-bit Serial 8-Pin MSOP 制造商:Rochester Electronics LLC 功能描述:DUAL 10-BIT, 1MSPS, ADC I.C - Bulk 制造商:Analog Devices 功能描述:10BIT ADC DUAL SMD 7912 MSOP8 |
| AD7912ARM-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 10-bit Serial 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 10-BIT SERL 8MSOP - Tape and Reel |
發布緊急采購，3分鐘左右您將得到回復。