Dual-Channel Digital Isolator
ADuM1210
Data Sheet
FEATURES
GENERAL DESCRIPTION
Narrow body, RoHS-compliant, 8-lead SOIC
Low power operation
5 V operation
1.1 mA per channel maximum @ 0 Mbps to 2 Mbps
3.7 mA per channel maximum @ 10 Mbps
3 V operation
0.8 mA per channel maximum @ 0 Mbps to 2 Mbps
2.2 mA per channel maximum @ 10 Mbps
3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 10 Mbps (NRZ)
Precise timing characteristics
3 ns maximum pulse width distortion
3 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 560 V peak
The ADuM1210 1 is a dual-channel, digital isolator based on
Analog Devices, Inc., iCoupler® technology. Combining high
speed CMOS and monolithic transformer technology, this
isolation component provides outstanding performance
characteristics superior to alternatives such as optocoupler
devices.
By avoiding the use of LEDs and photodiodes, iCoupler devices
remove the design difficulties commonly associated with optocouplers. The concerns of the typical optocoupler regarding
uncertain current transfer ratios, nonlinear transfer functions,
and temperature and lifetime effects are eliminated with the
simple iCoupler digital interfaces and stable performance
characteristics. The need for external drivers and other discrete
components is eliminated with iCoupler products. Furthermore,
iCoupler devices consume one-tenth to one-sixth the power of
optocouplers at comparable signal data rates.
The ADuM1210 isolator provides two independent isolation
channels operable with the supply voltage on either side,
ranging from 2.7 V to 5.5 V. This provides compatibility with
lower voltage systems and enables voltage translation
functionality across the isolation barrier. In addition, the
ADuM1210 provides low pulse width distortion ( 0.8 VDD2. CML is the maximum common-mode voltage slew rate
that can be sustained while maintaining VO < 0.8 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. The transient
magnitude is the range over which the common mode is slewed.
8
Dynamic supply current is the incremental amount of supply current required for a 1 Mbps increase in the signal data rate. See Figure 4 through Figure 6 for
information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See the Power Consumption section for guidance on
calculating per-channel supply current for a given data rate.
Rev. D | Page 6 of 20
Data Sheet
ADuM1210
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3 V OR 3 V/5 V OPERATION
5 V/3 V operation: 4.5 V ≤ VDD1 ≤ 5.5 V, 2.7 V ≤ VDD2 ≤ 3.6 V. 3 V/5 V operation: 2.7 V ≤ VDD1 ≤ 3.6 V, 4.5 V ≤ VDD2 ≤ 5.5 V. All minimum/
maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications are at
TA = 25°C; VDD1 = 3.0 V, VDD2 = 5.0 V; or VDD1 = 5.0 V, VDD2 = 3.0 V. All voltages are relative to their respective ground.
Table 3.
Parameter
DC SPECIFICATIONS
Input Supply Current, per Channel,
Quiescent
5 V/3 V Operation
3 V/5 V Operation
Output Supply Current, per Channel,
Quiescent
5 V/3 V Operation
3 V/5 V Operation
Total Supply Current, Two Channels1
DC to 2 Mbps
VDD1 Supply Current
5 V/3 V Operation
3 V/5 V Operation
VDD2 Supply Current
5 V/3 V Operation
3 V/5 V Operation
10 Mbps
VDD1 Supply Current
5 V/3 V Operation
3 V/5 V Operation
VDD2 Supply Current
5 V/3 V Operation
3 V/5 V Operation
Input Currents
Logic High Input Threshold
Logic Low Input Threshold
Logic High Output Voltages
Logic Low Output Voltages
SWITCHING SPECIFICATIONS
Minimum Pulse Width2
Maximum Data Rate3
Propagation Delay4
Pulse Width Distortion, |tPLH − tPHL|4
Change vs. Temperature
Propagation Delay Skew5
Channel-to-Channel Matching,
Codirectional Channels6
Channel-to-Channel Matching,
Opposing-Directional Channels6
Output Rise/Fall Time (10% to 90%)
5 V/3 V Operation
3 V/5 V Operation
Symbol
Min
Typ
Max
Unit
Test Conditions
mA
IDDI (Q)
0.50
0.26
0.6
0.35
mA
mA
mA
0.11
0.19
0.20
0.25
mA
mA
1.1
0.6
1.4
1.0
mA
mA
DC to 1 MHz logic signal frequency
DC to 1 MHz logic signal frequency
0.2
0.5
0.6
0.8
mA
mA
DC to 1 MHz logic signal frequency
DC to 1 MHz logic signal frequency
4.3
2.2
5.5
3.4
mA
mA
5 MHz logic signal frequency
5 MHz logic signal frequency
0.7
1.3
+0.01
1.1
2.0
+10
mA
mA
μA
V
V
V
V
V
V
V
5 MHz logic signal frequency
5 MHz logic signal frequency
0 V ≤ VIA, VIB ≤ VDD1
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
CL = 15 pF, CMOS signal levels
IDDO (Q)
IDD1 (Q)
IDD2 (Q)
IDD1 (10)
IDD2 (10)
IIA, IIB
VIH
VIL
VOAH, VOBH
−10
0.7 × VDD1
0.3 × VDD1
VDD2 − 0.1
VDD2 − 0.5
VOAL, VOBL
VDD2
VDD2 − 0.2
0.0
0.04
0.2
PW
0.1
0.1
0.4
tPSK
tPSKCD
22
3
ns
Mbps
ns
ns
ps/°C
ns
ns
tPSKOD
22
ns
tPHL, tPLH
PWD
100
10
15
55
3
5
tR/tF
IOx = −20 μA, VIx = VIxH
IOx = −4 mA, VIx = VIxH
IOx = 20 μA, VIx = VIxL
IOx = 400 μA, VIx = VIxL
IOx = 4 mA, VIx = VIxL
CL = 15 pF, CMOS signal levels
3.0
2.5
Rev. D | Page 7 of 20
ns
ns
ADuM1210
Parameter
Common-Mode Transient Immunity
at Logic High Output 7
Common-Mode Transient Immunity
at Logic Low Output7
Refresh Rate
5 V/3 V Operation
3 V/5 V Operation
Input Dynamic Supply Current,
per Channel 8
5 V/3 V Operation
3 V/5 V Operation
Output Dynamic Supply Current,
per Channel8
5 V/3 V Operation
3 V/5 V Operation
Data Sheet
Symbol
|CMH|
Min
25
Typ
35
Max
Unit
kV/μs
|CML|
25
35
kV/μs
1.2
1.1
Mbps
Mbps
0.19
0.10
mA/Mbps
mA/Mbps
0.03
0.05
mA/Mbps
mA/Mbps
Test Conditions
VIx = VDD1, VCM = 1000 V,
transient magnitude = 800 V
VIx = 0 V, VCM = 1000 V,
transient magnitude = 800 V
fr
IDDI (D)
IDDO (D)
1
The supply current values are for both channels combined when running at identical data rates. Output supply current values are specified with no output load
present. The supply current associated with an individual channel operating at a given data rate can be calculated as described in the Power Consumption section. See
Figure 4 through Figure 6 for information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See Figure 7 and Figure 8 for
total VDD1 and VDD2 supply currents as a function of data rate.
2
The minimum pulse width is the shortest pulse width at which the specified pulse width distortion is guaranteed.
3
The maximum data rate is the fastest data rate at which the specified pulse width distortion is guaranteed.
4
tPHL propagation delay is measured from the 50% level of the falling edge of the VIx signal to the 50% level of the falling edge of the VOx signal. tPLH propagation delay is
measured from the 50% level of the rising edge of the VIx signal to the 50% level of the rising edge of the VOx signal.
5
tPSK is the magnitude of the worst-case difference in tPHL and/or tPLH that is measured between units at the same operating temperature, supply voltages, and output
load within the recommended operating conditions.
6
Codirectional channel-to-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. Opposing-directional channel-to-channel matching is the absolute value of the difference in propagation delays between any two channels with
inputs on opposing sides of the isolation barrier.
7
CMH is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDD2. CML is the maximum common-mode voltage slew rate
that can be sustained while maintaining VO < 0.8 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. The transient
magnitude is the range over which the common mode is slewed.
8
Dynamic supply current is the incremental amount of supply current required for a 1 Mbps increase in the signal data rate. See Figure 4 through Figure 6 for
information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See the Power Consumption section for guidance on
calculating per-channel supply current for a given data rate.
Rev. D | Page 8 of 20
Data Sheet
ADuM1210
PACKAGE CHARACTERISTICS
Table 4.
Parameter
Resistance (Input-to-Output)1
Capacitance (Input-to-Output)1
Input Capacitance2
IC Junction-to-Case Thermal Resistance
Side 1
Side 2
1
2
Symbol
RI-O
CI-O
CI
Min
θJCI
θJCO
Typ
1012
1.0
4.0
Max
46
41
Unit
Ω
pF
pF
Test Conditions
°C/W
°C/W
Thermocouple located at center of package underside
f = 1 MHz
The device is considered a 2-terminal device; Pin 1 through Pin 4 are shorted together, and Pin 5 through Pin 8 are shorted together.
Input capacitance is from any input data pin to ground.
REGULATORY INFORMATION
The ADuM1210 is approved by the organizations listed in Table 5. See Table 10 and the Insulation Lifetime section for recommended
maximum working voltages for specific cross-isolation waveforms and insulation levels.
Table 5.
UL
Recognized Under 1577
Component Recognition
Program1
Single/Basic 2500 V rms
Isolation Voltage
File E214100
1
2
CSA
Approved under CSA Component Acceptance Notice #5A
VDE
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10): 2006-122
Basic insulation per CSA 60950-1-03 and IEC 60950-1, 400 V rms
(566 peak) maximum working voltage
Functional insulation per CSA 60950-1-03 and IEC 60950-1,
800 V rms (1131 V peak) maximum working voltage
File 205078
Reinforced insulation, 560 V peak
File 2471900-4880-0001
In accordance with UL 1577, each ADuM1210 is proof-tested by applying an insulation test voltage ≥ 3000 V rms for 1 second (current leakage detection limit = 5 μA).
In accordance with DIN V VDE V 0884-10, each ADuM1210 is proof-tested by applying an insulation test voltage ≥1050 V peak for 1 second (partial discharge detection
limit = 5 pC). The asterisk (*) marked on the component designates DIN V VDE V 0884-10 approval.
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 6.
Parameter
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
Symbol
L(I01)
Value
2500
4.90 min
Unit
V rms
mm
Minimum External Tracking (Creepage)
L(I02)
4.01 min
mm
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
CTI
0.017 min
>175
IIIa
mm
V
Rev. D | Page 9 of 20
Conditions
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
Insulation distance through insulation
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
ADuM1210
Data Sheet
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 INSULATION CHARACTERISTICS
This isolator is suitable for reinforced isolation within the safety limit data only. Maintenance of the safety data is ensured by protective
circuits. Note that the asterisk (*) marked on the package denotes DIN V VDE V 0884-10 approval for a 560 V peak working voltage.
Table 7.
Description
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms
For Rated Mains Voltage ≤ 300 V rms
For Rated Mains Voltage ≤ 400 V rms
Climatic Classification
Pollution Degree per DIN VDE 0110, Table 1
Maximum Working Insulation Voltage
Input-to-Output Test Voltage, Method B1
Input-to-Output Test Voltage, Method A
After Environmental Tests Subgroup 1
After Input and/or Safety Test Subgroup 2
and Subgroup 3
Highest Allowable Overvoltage
Safety-Limiting Values
Case Temperature
Side 1 Current
Side 2 Current
Insulation Resistance at TS
Conditions
VIORM × 1.875 = VPR, 100% production test, tm = 1 sec,
partial discharge < 5 pC
VIORM × 1.6 = VPR, tm = 60 sec, partial discharge < 5 pC
Characteristic
Unit
VIORM
VPR
I to IV
I to III
I to II
40/105/21
2
560
1050
V peak
V peak
896
672
V peak
V peak
VTR
4000
V peak
TS
IS1
IS2
RS
150
160
170
>109
°C
mA
mA
Ω
VPR
VIORM × 1.2 = VPR, tm = 60 sec, partial discharge < 5 pC
Transient overvoltage, tTR = 10 seconds
Maximum value allowed in the event of a failure;
see Figure 2
VIO = 500 V
RECOMMENDED OPERATING CONDITIONS
200
180
SAFETY-LIMITING CURRENT (mA)
Symbol
Table 8.
160
Parameter
Operating Temperature
Supply Voltages 1
Input Signal Rise and Fall Times
140
SIDE #2
SIDE #1
120
100
80
1
60
50
100
150
CASE TEMPERATURE (°C)
200
05459-002
20
0
Min
−40
2.7
Max
+105
5.5
1.0
Unit
°C
V
ms
All voltages are relative to their respective ground. See the DC Correctness and
Magnetic Field Immunity section for information on immunity to external
magnetic fields.
40
0
Symbol
TA
VDD1, VDD2
Figure 2. Thermal Derating Curve, Dependence of Safety-Limiting Values
on Case Temperature, per DIN V VDE V 0884-10
Rev. D | Page 10 of 20
Data Sheet
ADuM1210
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 9.
Parameter
Storage Temperature (TST) Range
Ambient Operating Temperature
(TA) Range
Supply Voltages (VDD1, VDD2)1
Input Voltage (VIA, VIB)1
Output Voltage (VOA, VOB)1
Average Output Current, Per Pin (IO)2
Common-Mode Transients (CML, CMH)3
Rating
−55°C to +150°C
−40°C to +105°C
−0.5 V to +7.0 V
−0.5 V to VDDI + 0.5 V
−0.5 V to VDDO + 0.5 V
−35 mA to +35 mA
−100 kV/μs to +100 kV/μs
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
1
All voltages are relative to their respective ground.
See Figure 2 for maximum rated current values for various temperatures.
3
Refers to common-mode transients across the insulation barrier. Commonmode transients exceeding the absolute maximum rating may cause
latch-up or permanent damage.
2
Table 10. Maximum Continuous Working Voltage1
Parameter
AC Voltage, Bipolar Waveform
AC Voltage, Unipolar Waveform
Functional Insulation
Basic Insulation
DC Voltage
Functional Insulation
Basic Insulation
1
Max
565
Unit
V peak
Constraint
50-year minimum lifetime
1131
560
V peak
V peak
Maximum approved working voltage per IEC 60950-1
Maximum approved working voltage per IEC 60950-1 and VDE V 0884-10
1131
560
V peak
V peak
Maximum approved working voltage per IEC 60950-1
Maximum approved working voltage per IEC 60950-1 and VDE V 0884-10
Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details.
Rev. D | Page 11 of 20
ADuM1210
Data Sheet
VDD1 1
VIA 2
VIB 3
GND1 4
ADuM1210
TOP VIEW
(Not to Scale)
8
VDD2
7
VOA
6
VOB
5
GND2
05459-003
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 3. Pin Configuration
Table 11. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
VDD1
VIA
VIB
GND1
GND2
VOB
VOA
VDD2
Description
Supply Voltage for Isolator Side 1, 2.7 V to 5.5 V.
Logic Input A.
Logic Input B.
Ground 1. Ground reference for Isolator Side 1.
Ground 2. Ground reference for Isolator Side 2.
Logic Output B.
Logic Output A.
Supply Voltage for Isolator Side 2, 2.7 V to 5.5 V.
Table 12. ADuM1210 Truth Table (Positive Logic)
VIA Input
H
L
H
L
X
VIB Input
H
L
L
H
X
VDD1 State
Powered
Powered
Powered
Powered
Unpowered
VDD2 State
Powered
Powered
Powered
Powered
Powered
VOA Output
H
L
H
L
L
VOB Output
H
L
L
H
L
X
X
Powered
Unpowered
Indeterminate
Indeterminate
Rev. D | Page 12 of 20
Description
Outputs return to the input state within 1 μs
of VDDI power restoration.
Outputs return to the input state within 1 μs
of VDDO power restoration.
Data Sheet
ADuM1210
TYPICAL PERFORMANCE CHARACTERISTICS
20
10
15
CURRENT (mA)
CURRENT/CHANNEL (mA)
8
6
4
5V
3V
10
5V
5
2
0
10
20
DATA RATE (Mbps)
30
Figure 4. Typical Input Supply Current per Channel vs. Data Rate
for 5 V and 3 V Operation
0
4
3
3
CURRENT (mA)
4
2
5V
1
30
2
5V
3V
1
0
10
20
DATA RATE (Mbps)
30
0
Figure 5. Typical Output Supply Current per Channel vs. Data Rate
for 5 V and 3 V Operation (No Output Load)
0
3
5V
2
0
10
20
DATA RATE (Mbps)
30
05459-006
3V
0
30
Figure 8. Typical VDD2 Supply Current vs. Data Rate for 5 V and 3 V Operation
4
1
10
20
DATA RATE (Mbps)
05459-008
3V
0
CURRENT/CHANNEL (mA)
10
20
DATA RATE (Mbps)
Figure 7. Typical VDD1 Supply Current vs. Data Rate for 5 V and 3 V Operation
05459-005
CURRENT/CHANNEL (mA)
0
05459-004
0
05459-007
3V
Figure 6. Typical Output Supply Current per Channel vs. Data Rate
for 5 V and 3 V Operation (15 pF Output Load)
Rev. D | Page 13 of 20
ADuM1210
Data Sheet
APPLICATIONS INFORMATION
PC BOARD LAYOUT
The ADuM1210 digital isolator requires no external interface
circuitry for the logic interfaces. Power supply bypassing is
strongly recommended at the input and output supply pins. The
capacitor value should be between 0.01 μF and 0.1 μF. The total
lead length between both ends of the capacitor and the input
power supply pin should not exceed 20 mm.
See the AN-1109 Application Note for board layout guidelines.
PROPAGATION DELAY-RELATED PARAMETERS
Propagation delay is a parameter that describes the time it takes
a logic signal to propagate through a component. The propagation
delay to a logic low output can differ from the propagation
delay to a logic high output.
where:
β is the magnetic flux density (gauss).
rn is the radius of the nth turn in the receiving coil (cm).
N is the number of turns in the receiving coil.
Given the geometry of the receiving coil in the ADuM1210 and
an imposed requirement that the induced voltage be at most
50% of the 0.5 V margin at the decoder, a maximum allowable
magnetic field is calculated, as shown in Figure 10.
50%
tPHL
50%
Figure 9. Propagation Delay Parameters
Pulse width distortion is the maximum difference between the
two propagation delay values and is an indication of how
accurately the input signal’s timing is preserved.
Channel-to-channel matching refers to the maximum amount
that the propagation delay differs between channels within a
single ADuM1210 component.
MAXIMUM ALLOWABLE MAGNETIC FLUX
DENSITY (kgauss)
100
05459-009
tPLH
OUTPUT (VOx)
V = (−dβ/dt) ∑ π rn2; n = 1, 2, … , N
10
1
0.1
0.01
0.001
1k
Propagation delay skew refers to the maximum amount that
the propagation delay differs between multiple ADuM120x
components operating under the same conditions.
10k
100k
1M
10M
MAGNETIC FIELD FREQUENCY (Hz)
100M
05459-010
INPUT (VIx)
The pulses at the transformer output have an amplitude greater
than 1.0 V. The decoder has a sensing threshold at about 0.5 V,
therefore establishing a 0.5 V margin in which induced voltages
can be tolerated. The voltage induced across the receiving coil is
given by
Figure 10. Maximum Allowable External Magnetic Flux Density
DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY
Positive and negative logic transitions at the isolator input cause
narrow (~1 ns) pulses to be sent to the decoder via the transformer.
The decoder is bistable and is therefore either set or reset by the
pulses, indicating input logic transitions. In the absence of logic
transitions of more than ~1 μs at the input, a periodic set of
refresh pulses indicative of the correct input state is sent to
ensure dc correctness at the output. If the decoder receives no
internal pulses for more than about 5 μs, the input side is
assumed to be unpowered or nonfunctional, in which case the
isolator output is forced to a default state (see Table 12) by the
watchdog timer circuit.
The ADuM1210 is extremely immune to external magnetic
fields. The limitation on the ADuM1210 magnetic field
immunity is set by the condition in which induced voltage in
the transformer’s receiving coil is sufficiently large to either
falsely set or reset the decoder. The following analysis defines
the conditions under which this can occur. The 3 V operating
condition of the ADuM1210 is examined because it represents
the most susceptible mode of operation.
For example, at a magnetic field frequency of 1 MHz, the
maximum allowable magnetic field of 0.2 kgauss induces a
voltage of 0.25 V at the receiving coil. This is about 50% of the
sensing threshold and does not cause a faulty output transition.
Similarly, if such an event occurred during a transmitted pulse
(and had the worst-case polarity), it would reduce the received
pulse from >1.0 V to 0.75 V, still well above the 0.5 V sensing
threshold of the decoder.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances away from the
ADuM1210 transformers. Figure 11 expresses these allowable
current magnitudes as a function of frequency for selected
distances. As seen in Figure 11, the ADuM1210 is extremely
immune and can be affected only by extremely large currents
operated at high frequency and very close to the component.
For the 1 MHz example, a 0.5 kA current would have to be
placed 5 mm away from the ADuM1210 to affect the
component’s operation.
Rev. D | Page 14 of 20
Data Sheet
ADuM1210
To calculate the total IDD1 and IDD2 supply current, the supply
currents for each input and output channel corresponding to
IDD1 and IDD2 are calculated and totaled. Figure 4 and Figure 5
show per-channel supply currents as a function of data rate for
an unloaded output condition. Figure 6 shows per-channel
supply current as a function of data rate for a 15 pF output
condition. Figure 7 and Figure 8 show total VDD1 and VDD2
supply current as a function of data rate.
DISTANCE = 1m
100
10
DISTANCE = 100mm
1
DISTANCE = 5mm
INSULATION LIFETIME
0.1
0.01
1k
10k
100k
1M
10M
100M
MAGNETIC FIELD FREQUENCY (Hz)
05459-011
MAXIMUM ALLOWABLE CURRENT (kA)
1000
Figure 11. Maximum Allowable Current for Various
Current-to-ADuM1210 Spacings
Note that, at combinations of strong magnetic fields and high
frequencies, any loops formed by printed circuit board traces
can induce sufficiently large error voltages to trigger the
threshold of succeeding circuitry. Care should be taken in the
layout of such traces to avoid this possibility.
POWER CONSUMPTION
The supply current at a given channel of the ADuM1210
isolator is a function of the supply voltage, the channel data rate,
and the channel output load.
For each input channel, the supply current is given by
IDDI = IDDI (Q)
f ≤ 0.5fr
IDDI = IDDI (D) × (2f − fr) + IDDI (Q)
f > 0.5fr
For each output channel, the supply current is given by
IDDO = IDDO (Q)
f ≤ 0.5fr
−3
IDDO = (IDDO (D) + (0.5 × 10 ) × CLVDDO) × (2f − fr) + IDDO (Q)
f > 0.5fr
where:
IDDI (D), IDDO (D) are the input and output dynamic supply currents
per channel (mA/Mbps).
CL is the output load capacitance (pF).
VDDO is the output supply voltage (V).
f is the input logic signal frequency (MHz, half the input data
rate, NRZ signaling).
fr is the input stage refresh rate (Mbps).
IDDI (Q), IDDO (Q) are the specified input and output quiescent
supply currents (mA).
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of
insulation degradation is dependent on the characteristics of the
voltage waveform applied across the insulation. In addition to
the testing performed by the regulatory agencies, Analog
Devices carries out an extensive set of evaluations to determine
the lifetime of the insulation structure within the ADuM1210.
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage.
Acceleration factors for several operating conditions are
determined. These factors allow calculation of the time to
failure at the actual working voltage. The values shown in Table 10
summarize the peak voltage for 50 years of service life for a
bipolar ac operating condition and the maximum CSA/VDE
approved working voltages. In many cases, the approved
working voltage is higher than 50-year service life voltage.
Operation at these high working voltages can lead to shortened
insulation life in some cases.
The insulation lifetime of the ADuM1210 depends on the
voltage waveform type imposed across the isolation barrier.
The iCoupler insulation structure degrades at different rates
depending on whether the waveform is bipolar ac, unipolar ac,
or dc. Figure 12, Figure 13, and Figure 14 illustrate these
different isolation voltage waveforms.
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines the Analog Devices recommended maximum
working voltage.
Rev. D | Page 15 of 20
ADuM1210
Data Sheet
Note that the voltage presented in Figure 13 is shown as
sinusoidal for illustration purposes only. It is meant to represent
any voltage waveform varying between 0 V and some limiting
value. The limiting value can be positive or negative, but the
voltage cannot cross 0 V.
05459-014
RATED PEAK VOLTAGE
0V
Figure 12. Bipolar AC Waveform
05459-012
RATED PEAK VOLTAGE
0V
Figure 13. Unipolar AC Waveform
RATED PEAK VOLTAGE
05459-013
In the case of unipolar ac or dc voltage, the stress on the
insulation is significantly lower. This allows operation at higher
working voltages while still achieving a 50-year service life. The
working voltages listed in Table 10 can be applied while maintaining the 50-year minimum lifetime provided the voltage
conforms to either the unipolar ac or dc voltage case. Any crossinsulation voltage waveform that does not conform to Figure 13
or Figure 14 should be treated as a bipolar ac waveform, and its
peak voltage should be limited to the 50-year lifetime voltage
value listed in Table 10.
0V
Figure 14. DC Waveform
Rev. D | Page 16 of 20
Data Sheet
ADuM1210
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
1
5
6.20 (0.2441)
5.80 (0.2284)
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
SEATING
PLANE
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
0.25 (0.0099)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
012407-A
8
4.00 (0.1574)
3.80 (0.1497)
Figure 15. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model 1
ADuM1210BRZ
ADuM1210BRZ-RL7
1
Number
of Inputs,
VDD1 Side
2
2
Number
of Inputs,
VDD2 Side
0
0
Maximum
Data Rate
10 Mbps
10 Mbps
Maximum
Propagation
Delay, 5 V
50 ns
50 ns
Z = RoHS Compliant Part.
Rev. D | Page 17 of 20
Maximum
Pulse Width
Distortion
3 ns
3 ns
Temperature
Range
−40°C to +105°C
−40°C to +105°C
Package
Description
8-Lead SOIC_N
8-Lead SOIC_N
Package
Option
R-8
R-8
ADuM1210
Data Sheet
NOTES
Rev. D | Page 18 of 20
Data Sheet
ADuM1210
NOTES
Rev. D | Page 19 of 20
ADuM1210
Data Sheet
NOTES
©2005–2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05459-0-3/12(D)
Rev. D | Page 20 of 20
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