參數(shù)資料
型號： AD7476AYRMZ-REEL7
廠商： Analog Devices Inc
文件頁數(shù)： 14/29頁
文件大?。?/td> 0K
描述： IC ADC 12BIT 1MSPS LP 8MSOP
設(shè)計資源： Output Channel Monitoring Using AD5380 (CN0008)
AD5382 Channel Monitor Function (CN0012)
AD5381 Channel Monitor Function (CN0013)
AD5383 Channel Monitor Function (CN0015)
AD5390/91/92 Channel Monitor Function (CN0030)
Power off protected data acquisition signal chain using ADG4612 , AD711, and AD7476 (CN0165)
標(biāo)準(zhǔn)包裝： 1,000
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）： 17.5mW
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： 帶卷 (TR)
輸入數(shù)目和類型： 1 個單端，單極
配用： EVAL-AD7476ACBZ-ND - BOARD EVALUATION FOR AD7476A
AD7476A/AD7477A/AD7478A
Rev. F | Page 20 of 28
POWER VS. THROUGHPUT RATE
By using the power-down mode on the AD7476A/AD7477A/
AD7478A when not converting, the average power consump-
tion of the ADC decreases at lower throughput rates. Figure 23
shows that as the throughput rate is reduced, the device remains
in its power-down state longer and the average power consumption
over time drops accordingly.
For example, if the AD7476A/AD7477A/AD7478A operate in a
continuous sampling mode with a throughput rate of 100 kSPS
and an SCLK of 20 MHz (VDD = 5 V) and the devices are placed
in the power-down mode between conversions, the power
consumption is calculated as follows:
The power dissipation during normal operation is 17.5 mW
(VDD = 5 V). If the power-up time is one dummy cycle, that is,
1 μs, and the remaining conversion time is another cycle, that is,
1 μs, then the AD7476A/AD7477A/AD7478A dissipate 17.5 mW
for 2 μs during each conversion cycle.
If the throughput rate is 100 kSPS, the cycle time is 10 μs, then
the average power dissipated during each cycle is (2/10) ×
(17.5 mW) = 3.5 mW.
If VDD = 3 V, SCLK = 20 MHz, and the devices are again in
power-down mode between conversions, then the power
dissipation during normal operation is 5.1 mW. Thus, the
AD7576A/AD7477A/AD8478A dissipate 5.1 mW for 2 μs
during each conversion cycle. With a throughput rate of
100 kSPS, the average power dissipated during each cycle is
(2/10) × (5.1 mW) = 1.02 mW.
Figure 23 shows the power vs. the throughput rate when using
the power-down mode between conversions with both 5 V and
3 V supplies. The power-down mode is intended for use with
throughput rates of approximately 333 kSPS or less, because at
higher sampling rates, the power-down mode produces no
power savings.
THROUGHPUT (kSPS)
100
0.1
0
POWER
(mW)
10
1
0.01
50
100
150
200
250
300
350
VDD = 5V, SCLK = 20MHz
VDD = 3V, SCLK = 20MHz
02930-023
Figure 23. Power vs. Throughput
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AD7476BRTZ-R2 功能描述:IC ADC 12BIT 1MSPS SOT23-6 RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7476BRTZ-R23 制造商:AD 制造商全稱:Analog Devices 功能描述:1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23
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