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參數(shù)資料
| 型號(hào)： | AD7825BRZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/28頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 4CH 2MSPS 24-SOIC |
| 產(chǎn)品變化通告： | Product Discontinuance 27/Oct/2011 |
| 標(biāo)準(zhǔn)包裝： | 400 |
| 位數(shù)： | 8 |
| 采樣率（每秒）： | 2M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 36mW |
| 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： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 4 個(gè)單端，單極 |
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AD7822/AD7825/AD7829
Rev. C | Page 16 of 28
Mode 2 Operation (Automatic Power-Down)
When the AD7822/AD7825/AD7829 are operated in Mode 2
(see Figure 25), they automatically power down at the end of
a conversion. The CONVST signal is brought low to initiate
a conversion and is left logic low until after the EOC goes high,
that is, approximately 100 ns after the end of the conversion.
The state of the CONVST signal is sampled at this point (that is,
530 ns maximum after CONVST falling edge), and the AD7822/
AD7825/AD7829 power down as long as CONVST is low.
The ADC is powered up again on the rising edge of the
CONVST signal. Superior power performance can be achieved
in this mode of operation by powering up the AD7822/AD7825/
AD7829 only to carry out a conversion. The parallel interface of
the AD7822/AD7825/AD7829 remains fully operational while
the ADCs are powered down. A read may occur while the part
is powered down, and, therefore, it does not necessarily need to
be placed within the EOC pulse, as shown in Figure 25.
t2
t1
t3
VALID
DATA
CONVST
EOC
CS
RD
DB0 TO DB7
TRACK
HOLD
TRACK
HOLD
120ns
01
32
1-
0
25
Figure 24. Mode 1 Operation
CONVST
EOC
CS
RD
DB0 TO DB7
tPOWER-UP
t1
VALID
DATA
POWER
DOWN
HERE
01
32
1-
0
26
Figure 25. Mode 2 Operation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7825BRZ-REEL71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V/5 V, 2 MSPS, 8-Bit, 1-/4-/8-Channel Sampling ADCs |
| AD7827 | 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V/5 V, 1 MSPS, 8-Bit, Serial Interface Sampling ADC |
| AD7827BN | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Bulk 制造商:Analog Devices 功能描述:IC 8BIT ADC 7827 DIP8 |
| AD7827BNZ | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin PDIP 制造商:Analog Devices 功能描述:IC 8BIT ADC 7827 DIP8 |
| AD7827BR | 制造商:Analog Devices 功能描述:ADC Single Semiflash 1Msps 8-bit Serial 8-Pin SOIC N 制造商:Rochester Electronics LLC 功能描述:8-BIT SERIAL 2MSPS ADC - Bulk |
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