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AD7401A Datasheet(PDF) 5 Page - Analog Devices

Part # AD7401A
Description  Isolated Sigma-Delta Modulator
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7401A Datasheet(HTML) 5 Page - Analog Devices

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AD7401A
Rev. 0 | Page 5 of 20
TIMING SPECIFICATIONS
VDD1 = 4.5 V to 5.5 V, VDD2 = 3 V to 5.5 V, TA = −40°C to +125°C, unless otherwise noted.
Table 2.
Parameter1
Limit at TMIN, TMAX
Unit
Description
fMCLKIN2, 3
20
MHz max
Master clock input frequency
5
MHz min
Master clock input frequency
t14
25
ns max
Data access time after MCLKIN rising edge
t24
15
ns min
Data hold time after MCLKIN rising edge
t3
0.4 × tMCLKIN
ns min
Master clock low time
t4
0.4 × tMCLKIN
ns min
Master clock high time
1 Sample tested during initial release to ensure compliance.
2 Mark space ratio for clock input is 40/60 to 60/40 for fMCLKIN ≤ 16 MHz and 48/52 to 52/48 for 16 MHz < fMCLKIN < 20 MHz.
3 VDD1 = VDD2 = 5 V
± 5% for fMCLKIN > 16 MHz to 20 MHz.
4 Measured with the load circuit of
and defined as the time required for the output to cross 0.8 V or 2.0 V.
Figure 2
200µA
IOL
200µA
IOH
1.6V
TO OUTPUT
PIN
CL
25pF
Figure 2. Load Circuit for Digital Output Timing Specifications
MCLKIN
MDAT
t1
t2
t4
t3
Figure 3. Data Timing


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