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AD7403 Datasheet(PDF) 6 Page - Analog Devices

Part # AD7403
Description  16-Bit, Isolated Sigma-Delta Modulator
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7403 Datasheet(HTML) 6 Page - Analog Devices

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Data Sheet
AD7403
Rev. B | Page 5 of 24
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER REQUIREMENTS
VDD1
4.5
5.5
V
VDD2
3
5.5
V
IDD1
30
33.5
mA
VDD1 = 5.5 V
IDD2
13
16
mA
VDD2 = 5.5 V
6.5
8
mA
VDD2 = 3.3 V
Power Dissipation
237
272
mW
VDD1 = VDD2 = 5.5 V
187
211
mW
VDD1 = 5.5 V, VDD2 = 3.3 V
1 For fMCLKIN > 16 MHz, mark space ratio is 48/52 to 52/48, VDD1 = 5 V ± 5%.
2 See the Terminology section.
3 Not production tested. Sample tested during initial release to ensure compliance.
TIMING SPECIFICATIONS
VDD1 = 4.5 V to 5.5 V, VDD2 = 3 V to 5.5 V, TA = −40°C to +105°C (AD7403-8) or −40°C to +125°C (AD7403), unless otherwise noted.
Sample tested during initial release to ensure compliance. It is recommended to read MDAT on the MCLKIN rising edge.
Table 3.
Parameter
Limit at TMIN, TMAX
Unit
Description
Min
Typ
Max
fMCLKIN
5
MHz
Master clock input frequency
20
MHz
t11
Data access time after MCLKIN rising edge
40
ns
VDD2 = 4.5 V to 5.5 V
45
ns
VDD2 = 3 V to 3.6 V, AD7403
42
ns
VDD2 = 3 V to 3.6 V, AD7403-8
t21
Data hold time after MCLKIN rising edge
12
ns
VDD2 = 4.5 V to 5.5 V
17
ns
VDD2 = 3 V to 3.6 V
t3
Master clock low time
0.45 × tMCLKIN
ns
fMCLKIN ≤ 16 MHz
0.48 × tMCLKIN
ns
16 MHz < fMCLKIN ≤ 20 MHz
t4
Master clock high time
0.45 × tMCLKIN
ns
fMCLKIN ≤ 16 MHz
0.48 × tMCLKIN
ns
16 MHz < fMCLKIN ≤ 20 MHz
1 Defined as the time required from an 80% MCLKIN input level to when the output crosses 0.8 V or 2.0 V for VDD2 = 3 V to 3.6 V or when the output crosses 0.8 V or 0.7 ×
VDD2 for VDD2 = 4.5 V to 5.5 V as outlined in Figure 2. Measured with a ±200 μA load and a 25 pF load capacitance.
MCLKIN
MDAT
1SEE NOTE 1 OF TABLE 3 FOR FURTHER DETAILS.
t4
t1
t2
t3
80%
2.0V OR 0.7 × VDD21
0.8V
Figure 2. Data Timing


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