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參數(shù)資料
| 型號(hào)： | AD7451BRMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT DIFF 1MSPS 8MSOP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1M |
| 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）： | 9.25mW |
| 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： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個(gè)偽差分，單極 |
AD7441/AD7451
Rev. D | Page 17 of 24
Timing Example 2
Timing Example 1
Having fSCLK = 5 MHz and a throughput rate of 315 kSPS gives a
cycle time of
Having fSCLK = 18 MHz and a throughput rate of 1 MSPS gives a
cycle time of
1/Throughput = 1/315,000 = 3.174 μs
1/Throughput = 1/1,000,000 = 1 μs
A cycle consists of
t2 + 12.5 (1/fSCLK) + tACQUISITION = 3.174 μs
t2 + 12.5 (1/fSCLK) + tACQUISITION = 1 μs
Therefore, if t2 is 10 ns, then
Therefore, if t2 = 10 ns, then
10 ns + 12.5 (1/5 MHz) + tACQUISITION = 3.174 μs
tACQUISITION = 664 ns
10 ns + 12.5 (1/18 MHz) + tACQUISITION = 1 μs
tACQUISITION = 296 ns
This 664 ns satisfies the requirement of 290 ns for tACQUISITION.
This 296 ns satisfies the requirement of 290 ns for tACQUISITION.
2.5 (1/fSCLK) + t8 = tQUIET
where t8 = 35 ns. This allows a value of 129 ns for tQUIET,
satisfying the minimum requirement of 60 ns.
where t8 = 35 ns. This allows a value of 122 ns for tQUIET,
satisfying the minimum requirement of 60 ns.
As in this example and with other slower clock values, the signal
can already be acquired before the conversion is complete, but it
is still necessary to leave 60 ns minimum tQUIET between conver-
sions. In Example 2, the signal is fully acquired at approximately
Point C in Figure 28.
t2
t8
t6
t5
tCONVERT
CS
SCLK
12
3
4
5
13
14
15
16
12.5(1/
fSCLK)
tACQUISITION
1/THROUGHPUT
tQUIET
10ns
B
C
03
15
3-
02
8
Figure 28. Serial Interface Timing Example
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7451BRMZ | 制造商:Analog Devices 功能描述:12BIT SAR ADC DIFF I/P SMD 7451 |
| AD7451BRT | 制造商:AD 制造商全稱:Analog Devices 功能描述:Pseudo Differential, 1MSPS, 12- & 10-Bit ADCs in 8-lead SOT-23 |
| AD7451BRT-R2 | 功能描述:IC ADC 12BIT W/DIFF INP SOT-23-8 RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:- |
| AD7451BRT-REEL7 | 制造商:Analog Devices 功能描述: |
| AD7452 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Differential Input, 555 kSPS 12-Bit ADC in an 8-Lead SOT-23 |
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