參數(shù)資料
型號： AD7466BRM
廠商： ANALOG DEVICES INC
元件分類： ADC
英文描述： 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
中文描述： 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
封裝： MO-187-AA, MSOP-8
文件頁數(shù)： 2/28頁
文件大?。?/td> 959K
代理商： AD7466BRM
AD7466/AD7467/AD7468
Rev. B | Page 10 of 28
TIMING EXAMPLES
Figure 3 and Figure 4 show some of the timing parameters from
the Timing Specifications section (Table 4).
Timing Example 1
As shown in Figure 4, fSCLK = 3.4 MHz and a throughput of
100 kSPS gives a cycle time of tCONVERT + t8 + tQUIET = 10 s.
Assuming VDD = 1.8 V, tCONVERT = t2 + 15(1/fSCLK) = 55 ns +
4.41 s = 4.46 s, and t8 = 60 ns max, then tQUIET = 5.48 s, which
satisfies the requirement of 10 ns for tQUIET. The part is fully
powered up and the signal is fully acquired at Point A. This
means that the acquisition/power-up time is t2 + 2(1/fSCLK) =
55 ns + 588 ns = 643 ns, satisfying the maximum requirement of
640 ns for the power-up time.
Timing Example 2
The AD7466 can also operate with slower clock frequencies.
As shown in Figure 4, assuming VDD = 1.8 V, fSCLK = 2 MHz,
and a throughput of 50 kSPS gives a cycle time of tCONVERT + t8 +
tQUIET = 20 s. With tCONVERT = t2 + 15(1/fSCLK) = 55 ns + 7.5 s =
7.55 s, and t8 = 60 ns max, this leaves tQUIET to be 12.39 s,
which satisfies the requirement of 10 ns for tQUIET. The part is
fully powered up and the signal is fully acquired at Point A,
which means the acquisition/power-up time is t2 + 2(1/fSCLK) =
55 ns + 1 s = 1.05 s, satisfying the maximum requirement of
640 ns for the power-up time. In this example and with other
slower clock values, the part is fully powered up and the signal
already acquired before the third SCLK falling edge; however,
the track-and-hold does not go into hold mode until that point.
In this example, the part can be powered up and the signal can
be fully acquired at approximately Point B in Figure 4.
SCLK
t2
t3
t4
t7
t5
t8
tCONVERT
tQUIET
DB11
DB10
DB2
DB1
DB0
A
4 LEADING ZEROS
13
14
15
16
t1
THREE-STATE
SDATA
CS
5
4
3
2
1
02643-003
t6
0
Figure 3. AD7466 Serial Interface Timing Diagram Example
SCLK
t2
tCONVERT
B
A
t8
tQUIET
1/THROUGHPUT
AUTOMATIC
POWER-DOWN
TRACK-AND-HOLD IN HOLD
TRACK-AND-HOLD
IN TRACK
ACQUISITION TIME
POINT A: THE PART IF FULLY POWERED UP WITH VIN FULLY ACQUIRED.
1
2
3
CS
4
5
13
14
15
16
02643-004
Figure 4. AD7466 Serial Interface Timing Diagram Example
相關(guān)PDF資料
PDF描述
AD7466BRT 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
AD7467BRT 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
AD7468BRT 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
AD7466 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
AD7467 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7466BRM-REEL 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 8-Pin MSOP T/R
AD7466BRM-REEL7 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 8-Pin MSOP T/R
AD7466BRMZ 功能描述:IC ADC 12BIT 1.6V LP 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)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(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
AD7466BRMZ-REEL 功能描述:IC ADC 12BIT 1.6V LP 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
AD7466BRMZ-REEL7 功能描述:IC ADC 12BIT 1.6V LP 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
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