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參數(shù)資料
| 型號(hào)： | EVAL-AD7194EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 56/57頁 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR AD7194 |
| 設(shè)計(jì)資源： | EVAL-AD7zzzEBZ Schematic AD7194 Gerber Files |
| 標(biāo)準(zhǔn)包裝： | 1 |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 24 |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 工作溫度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7194 |
| 已供物品： | 板，線纜 |
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Data Sheet
AD7194
Rev. A | Page 7 of 56
TIMING CHARACTERISTICS
AVDD = 3 V to 5.25 V, DVDD = 2.7 V to 5.25 V, AGND = DGND = 0 V, Input Logic 0 = 0 V, Input Logic 1 = DVDD, unless otherwise noted.
Table 2.
Parameter
Limit at TMIN, TMAX (B Version)
Unit
Conditions/Comments1, 2
READ AND WRITE OPERATIONS
t3
100
ns min
SCLK high pulse width
t4
100
ns min
SCLK low pulse width
READ OPERATION
t1
0
ns min
CS falling edge to DOUT/RDY active time
60
ns max
DVDD
= 4.75 V to 5.25 V
80
ns max
DVDD
= 2.7 V to 3.6 V
t23
0
ns min
SCLK active edge to data valid delay4
60
ns max
DVDD
= 4.75 V to 5.25 V
80
ns max
DVDD
= 2.7 V to 3.6 V
10
ns min
Bus relinquish time after CS inactive edge
80
ns max
t6
0
ns min
SCLK inactive edge to CS inactive edge
t7
10
ns min
SCLK inactive edge to DOUT/RDY high
WRITE OPERATION
t8
0
ns min
CS falling edge to SCLK active edge setup time4
t9
30
ns min
Data valid to SCLK edge setup time
t10
25
ns min
Data valid to SCLK edge hold time
t11
0
ns min
CS rising edge to SCLK edge hold time
1
Sample tested during initial release to ensure compliance. All input signals are specified with tR = tF = 5 ns (10% to 90% of DVDD) and timed from a voltage level of 1.6 V.
2
3
These numbers are measured with the load circuit shown in Figure 2 and defined as the time required for the output to cross the VOL or VOH limits.
4
The SCLK active edge is the falling edge of SCLK.
5
These numbers are derived from the measured time taken by the data output to change 0.5 V when loaded with the circuit shown in Figure 2. The measured number
is then extrapolated back to remove the effects of charging or discharging the 50 pF capacitor. This means that the times quoted in the timing characteristics are the
true bus relinquish times of the part and, as such, are independent of external bus loading capacitances.
6
RDY returns high after a read of the data register. In single conversion mode and continuous conversion mode, the same data can be read again, if required, while RDY
is high, although care should be taken to ensure that subsequent reads do not occur close to the next output update. If the continuous read feature is enabled, the
digital word can be read only once.
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| EVAL-AD7264EDZ | 功能描述:BOARD EVALUATION FOR AD7264 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
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