Data Sheet
ADuM7640/ADuM7641/ADuM7642/ADuM7643
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3.3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = 5 V, V DD2 = 3.3 V. Minimum/maximum specifications apply over the entire recom-
mended operation range of 4.5 V ≤ VDD1 ≤ 5.5 V, 3.0 V ≤ VDD2 ≤ 3.6 V, and −40°C ≤ TA ≤ +105°C, unless otherwise noted. Switching
specifications are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 7.
A Grade
Typ
C Grade
Typ
Parameter
Symbol
Unit
Test Conditions/Comments
Min
Max
Min
40
Max
SWITCHING SPECIFICATIONS
Pulse Width
PW
250
ns
Within PWD limit
Data Rate
1
80
25
25
58
6
Mbps Within PWD limit
Propagation Delay
Pulse Width Distortion
Change vs. Temperature
Propagation Delay Skew1
Channel Matching
Codirectional2
tPHL, tPLH
PWD
30
42
2
3
ns
ns
50% input to 50% output
|tPLH − tPHL
|
5
2
ps/°C
ns
tPSK
20
14
tPSKCD
tPSKOD
25
30
5
8
2
15
15
ns
ns
ns
Opposing Directional3
Jitter
1 tPSK is the magnitude of the worst-case difference in tPHL or tPLH that is measured between units at the same operating temperature, supply voltages, and output load
within the recommended operating conditions.
2 Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation barrier.
3 Opposing directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposite sides of the
isolation barrier.
Table 8.
1 Mbps—A, C Grades
25 Mbps—C Grade
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Test Conditions/Comments
SUPPLY CURRENT
ADuM7640
No load
IDD1
IDD2
IDD1
IDD2
IDD1
IDD2
IDD1
IDD2
5.7
3.3
5.4
3.4
5.1
3.5
4.8
3.6
7.0
4.1
6.8
4.0
6.3
4.3
6.0
4.3
44
7.5
38
11
31
14
24
16
54
8.7
46
13
38
16
30
20
mA
mA
mA
mA
mA
mA
mA
mA
ADuM7641
ADuM7642
ADuM7643
Table 9.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
DC SPECIFICATIONS
Input Voltage Threshold
Logic High
VIH
VIL
0.7 VDDx
V
V
Logic Low
0.3 VDDx
Output Voltages
Logic High
VOH
VOL
II
VDDx − 0.1
VDDx −0.5
VDDx
VDDx − 0.2
0.0
0.2
+0.01
V
V
V
V
IOx = −20 µA, VIx = VIxH
IOx = −4 mA, VIx = VIxH
IOx = 20 µA, VIx = VIxL
IOx = 4 mA, VIx = VIxL
0 V ≤ VIx ≤ VDDx
Logic Low
0.1
0.4
+10
Input Current per Channel
AC SPECIFICATIONS
Output Rise/Fall Time
Common-Mode Transient Immunity1
−10
15
µA
tR/tF
|CM|
2.5
20
ns
10% to 90%
kV/µs VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Rate
fr
600
kHz
DC data inputs
1 |CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VOL < 0.8 VDDLx or VOH > 0.7 × VDDIx. The common-mode voltage slew
rates apply to both rising and falling common-mode voltage edges.
Rev. 0 | Page 7 of 20