Data Sheet
ADuM4121/ADuM4121-1
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 4.
Parameter
Symbol Value
Unit
V rms
mm
Conditions
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
5000
1-minute duration
Measured from input terminals to output terminals, shortest
distance through air
Measured from input terminals to output terminals, shortest
distance path along body
Measured from input terminals to output terminals, shortest
distance through air, line of sight, in the PCB mounting plane
L(I01)
L(I02)
L (PCB)
8 min
Minimum External Tracking (Creepage)
8 min
mm
mm
Minimum Clearance in the Plane of the Printed
Circuit Board (PCB Clearance)
8.3 min
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
25.5 min
>400
II
µm
V
Minimum distance through insulation
DIN IEC 112/VDE 0303 Part 3
Material Group (DIN VDE 0110, 1/89, Table 1)
CTI
DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS
This isolator is suitable for reinforced isolation only within the safety limit data. Maintenance of the safety data is ensured by protective circuits.
Table 5. VDE Characteristics
Description
Test Conditions/Comments
Symbol Characteristic Unit
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 600 V rms
Climatic Classification
Pollution Degree per DIN VDE 0110, Table 1
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method B1
I to IV
40/105/21
2
849
1592
VIORM
Vpd (m)
V peak
V peak
VIORM × 1.875 = Vpd (m), 100% production test, tini = tm = 1 sec,
partial discharge < 5 pC
Input to Output Test Voltage, Method A
After Environmental Tests Subgroup 1
After Input and/or Safety Test Subgroup 2 VIORM × 1.2 = Vpd (m), tini = 60 sec, tm = 10 sec, partial discharge < 5 pC
and Subgroup 3
VIORM × 1.5 = Vpd (m), tini = 60 sec, tm = 10 sec, partial discharge < 5 pC
Vpd (m)
Vpd (m)
1274
1019
V peak
V peak
Highest Allowable Overvoltage
VIOTM
VIOSM
VIOSM
7000
16,000
10,000
V peak
V peak
V peak
Surge Isolation Voltage Basic
Surge Isolation Voltage Reinforced
Safety Limiting Values
VPEAK = 16 kV, 1.2 µs rise time, 50 µs, 50% fall time
VPEAK = 16 kV, 1.2 µs rise time, 50 µs, 50% fall time
Maximum value allowed in the event of a failure (see Figure 2)
Maximum Junction Temperature
Safety Total Dissipated Power
Insulation Resistance at TS
TS
PS
RS
150
1.2
>109
°C
W
Ω
VIO = 500 V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
RECOMMENDED OPERATING CONDITIONS
Table 6.
Parameter
Value
Operating Temperature Range (TJ)
Supply Voltages
VDD1 to GND1
−40°C to +125°C
2.5 V to 6.5 V
4.5 V to 35 V
VDD2 to GND2
0
50
100
150
200
AMBIENT TEMPERATURE (°C)
Figure 2. Thermal Derating Curve, Dependence of Safety Limiting Values on
Case Temperature, per DIN V VDE V 0884-10
Rev. 0 | Page 5 of 16