參數(shù)資料
型號： AD7911AUJZ-R2
廠商： Analog Devices Inc
文件頁數(shù)： 27/28頁
文件大?。?/td> 0K
描述： IC ADC 10BIT 250KSPS TSOT23-8
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 10
采樣率（每秒）： 250k
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 20mW
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： SOT-23-8 薄型，TSOT-23-8
供應(yīng)商設(shè)備封裝： TSOT-23-8
包裝： 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型： 2 個單端，單極
其它名稱： AD7911AUJZ-R2DKR
AD7911/AD7921
Rev. A | Page 8 of 28
TIMING EXAMPLES
Figure 6 and Figure 7 show some of the timing parameters from
Timing Example 1
As shown in Figure 7, when fSCLK = 5 MHz and the throughput is
250 kSPS, the cycle time is
t2 + 12.5(1/fSCLK) + tACQ = 4 μs
With t2 = 10 ns minimum, then tACQ is 1.49 μs, which satisfies
the requirement of 290 ns for tACQ.
In Figure 7, tACQ is comprised of 2.5(1/fSCLK) + t10 + tQUIET, where
t10 = 30 ns maximum. This allows a value of 960 ns for tQUIET,
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 fSCLK = 2 MHz and the throughput rate
is 100 KSPS, the cycle time is
t2 + 12.5(1/fSCLK) + tACQ = 10 μs
With t2 = 10 ns minimum, then tACQ is 3.74 μs, which satisfies
the requirement of 290 ns for tACQ.
In Figure 7, tACQ is comprised of 2.5(1/fSCLK) + t10 + tQUIET, where
t10 = 30 ns maximum. This allows a value of 2.46 μs for tQUIET,
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 tQUIET between
conversions. In this example, the signal should be fully acquired
at approximately point C in Figure 7.
04350-0-006
ZERO
X
12
34
5
13
14
15
16
X
CHN
X
CHN
X
DB11
DB10
DB2
DB1
DB0
Z
t2
t6
t4
t8
t9
t3
t7
t5
t10
t1
tQUIET
tCONVERT
SCLK
CS
DOUT
THREE-STATE
DIN
B
Figure 6. AD7921 Serial Interface Timing Diagram
04350-0-007
12
3
4
5
13
14
15
16
tQUIET
tACQUISITION
1/THROUGHPUT
12.5(1/fSCLK)
tCONVERT
BC
SCLK
CS
t10
t2
Figure 7. Serial Interface Timing Example
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參數(shù)描述
AD7911AUJZ-REEL7 功能描述:IC ADC 10BIT 250KSPS TSOT23-8 RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)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
AD7912ARM-REEL7 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 制造商:Rochester Electronics LLC 功能描述:DUAL 10-BIT, 1MSPS, ADC I.C - Tape and Reel
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