3.5 mA per channel max @ 10 Mbps
31 mA per channel max @ 90 Mbps
3 V operation
0.7 mA per channel max @ 0 Mbps to 2 Mbps
2.1 mA per channel max @ 10 Mbps
20 mA per channel max @ 90 Mbps
Bidirectional communication
3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 90 Mbps (NRZ)
Precise timing characteristics
2 ns max pulse-width distortion
2 ns max channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
Wide body 16-lead SOIC package, Pb-free models available
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 EN 60747-5-2 (VDE 0884 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
V
= 560 V peak
IORM
APPLICATIONS
General-purpose multichannel isolation
SPI® interface/data converter isolation
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
ADuM1400/ADuM1401/ADuM1402
GENERAL DESCRIPTION
The ADuM140x are 4-channel digital isolators based on Analog
Devices’ iCoupler® technology. Combining high speed CMOS
and monolithic air core transformer technology, these isolation
components provide 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 typical optocoupler concerns 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 discretes
is eliminated with these iCoupler products. Furthermore,
iCoupler devices consumes one-tenth to one-sixth the power of
optocouplers at comparable signal data rates.
The ADuM140x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(see the Ordering Guide). All models operate with the supply
voltage on either side ranging from 2.7 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling a
voltage translation functionality across the isolation barrier. In
addition, the ADuM140x provides low pulse-width distortion
(<2 ns for CRW grade) and tight channel-to-channel matching
(<2 ns for CRW grade). Unlike other optocoupler alternatives,
the ADuM140x isolators have a patented refresh feature that
ensures dc correctness in the absence of input logic transitions
and during power-up/power-down conditions.
FUNCTIONAL BLOCK DIAGRAMS
1
V
DD1
2
ND
1
ENCODEDECODE
3
V
IA
ENCODEDECODE
4
V
IB
ENCODEDECODE
5
V
IC
6
V
NC
ND
Figure 1. ADuM1400 Functional Block Diagram
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
All voltages are relative to their respective ground.
2
The supply current values for all four channels are 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 may be calculated as described in the Power Consumption section on
Page 20. See through for information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See
through for total I
3
The minimum pulse width is the shortest pulse width at which the specified pulse-width distortion is guaranteed.
4
The maximum data rate is the fastest data rate at which the specified pulse-width distortion is guaranteed.
5
t
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. t
PHL
measured from the 50% level of the rising edge of the V
6
t
is the magnitude of the worst-case difference in t
PSK
within the recommended operating conditions.
7
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.
8
CMH is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 V
that can be sustained while maintaining V
magnitude is the range over which the common mode is slewed.
9
Dynamic supply current is the incremental amount of supply current required for a 1 Mbps increase in signal data rate. See through for information
on per-channel supply current for unloaded and loaded conditions. See the section on Page 20 for guidance on calculating the per-channel supply current for a given data rate.
Figure 8
Figure 14
Figure 10
and I
DD1
supply currents as a function of data rate for ADuM1400/ADuM1401/ADuM1402 channel configurations.
DD2
propagation delay is
signal to the 50% level of the rising edge of the VOx signal.
Ix
or t
that is measured between units at the same operating temperature, supply voltages, and output load
PHL
PLH
. CML is the maximum common-mode voltage slew rate
< 0.8 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. The transient
O
DD2
Figure 8
PLH
Figure 10
Power Consumption
Figure 11
Rev. B | Page 5 of 24
ADuM1400/ADuM1401/ADuM1402
= V
, IIB, I
, IE1, I
, V
, V
, V
, V
, t
EH
EL
PLH
, I
, I
DD2 (10)
, I
DD2 (90)
IC,
E2
OBH
ODH
OBL
ODL
1
= 3.0 V.
DD2
0.26 0.31 mA
0.11 0.14 mA
1.2 1.9 mA DC to 1 MHz logic signal freq.
0.5 0.9 mA DC to 1 MHz logic signal freq.
4.5 6.5 mA 5 MHz logic signal freq.
1.4 2.0 mA 5 MHz logic signal freq.
42 65 mA 45 MHz logic signal freq.
11 15 mA 45 MHz logic signal freq.
1.0 1.6 mA DC to 1 MHz logic signal freq.
0.7 1.2 mA DC to 1 MHz logic signal freq.
3.7 5.4 mA 5 MHz logic signal freq.
2.2 3.0 mA 5 MHz logic signal freq.
34 52 mA 45 MHz logic signal freq.
19 27 mA 45 MHz logic signal freq.
0.9 1.5 mA DC to 1 MHz logic signal freq.
DD2 (Q)
3.0 4.2 mA 5 MHz logic signal freq.
27 39 mA 45 MHz logic signal freq.
–10 +0.01 +10 µA
, VIB, VIC, VID ≤ V
0 ≤ V
IA
V
, 0 ≤ VE1,VE2 ≤ V
DD2
1.6 V
0.4 V
V
, V
,
V
0.0 0.1 V IOx = 20 µA, VIx = V
,
– 0.1 3.0 V IOx = –20 µA, VIx = V
DD1
DD2
, V
– 0.4 2.8 V IOx = –4 mA, VIx = V
DD1
DD2
0.04 0.1 V IOx = 400 µA, VIx = V
0.2 0.4 V IOx = 4 mA, VIx = V
50 75 100 ns CL = 15 pF, CMOS signal levels
50 ns CL = 15 pF, CMOS signal levels
50 ns CL = 15 pF, CMOS signal levels
or
DD1
or V
DD1
DD2
IxH
IxH
IxL
IxL
IxL
ELECTRICAL CHARACTERISTICS—3 V OPERATION
2.7 V ≤ V
wise noted; all typical specifications are at T
Table 2.
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Input Supply Current, per Channel, Quiescent I
Output Supply Current, per Channel, Quiescent I
ADuM1400, Total Supply Current, Four Channels2
ADuM1401, Total Supply Current, Four Channels2
ADuM1402, Total Supply Current, Four Channels2
For All Models
SWITCHING SPECIFICATIONS
ADuM140xARW
≤ 3.6 V, 2.7 V ≤ V
DD1
≤ 3.6 V; all min/max specifications apply over the entire recommended operation range, unless other-
DD2
= 25°C, V
A
DD1
DDI (Q)
DDO (Q)
DC to 2 Mbps
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (Q)
DD2 (Q)
10 Mbps (BRW and CRW Grades Only)
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (10)
DD2 (10)
90 Mbps (CRW Grade Only)
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (90)
DD2 (90)
DC to 2 Mbps
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (Q)
DD2 (Q)
10 Mbps (BRW and CRW Grades Only)
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (10)
DD2 (10)
90 Mbps (CRW Grade Only)
V
Supply Current I
DD1
V
Supply Current I
DD2
DD1 (90)
DD2 (90)
DC to 2 Mbps
V
or V
DD1
Supply Current I
DD2
DD1 (Q)
10 Mbps (BRW and CRW Grades Only)
V
or V
DD1
Supply Current I
DD2
DD1 (10)
90 Mbps (CRW Grade Only)
V
or V
DD1
Input Currents
Logic High Input Threshold
Logic Low Input Threshold
Logic High Output Voltages
Logic Low Output Voltages
Minimum Pulse Width
Maximum Data Rate
Propagation Delay
Pulse-Width Distortion, |t
Propagation Delay Skew
Channel-to-Channel Matching
Supply Current I
DD2
3
4
5
5
– t
|
PLH
PHL
6
7
DD1 (90)
I
IA
I
ID
VIH, V
VIL, V
V
OAH
V
OCH
V
OAL
V
OCL
PW 1000 ns CL = 15 pF, CMOS signal levels
1 Mbps CL = 15 pF, CMOS signal levels
t
PHL
PWD 40 ns CL = 15 pF, CMOS signal levels
t
PSK
t
PSKCD/OD
Rev. B | Page 6 of 24
ADuM1400/ADuM1401/ADuM1402
Parameter Symbol Min Typ Max Unit Test Conditions
ADuM140xBRW
Minimum Pulse Width3 PW 100 ns CL = 15 pF, CMOS signal levels
Maximum Data Rate4 10 Mbps CL = 15 pF, CMOS signal levels
Propagation Delay5 t
Pulse-Width Distortion, |t
PLH
– t
PHL
5
|
Change vs. Temperature 5 ps/°C CL = 15 pF, CMOS signal levels
Propagation Delay Skew6 t
Channel-to-Channel Matching,
Refresh Rate f
Input Dynamic Supply Current, per Channel9I
Output Dynamic Supply Current, per Channel9 I
1
All voltages are relative to their respective ground.
2
The supply current values for all four channels are 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 may be calculated as described in the Power Consumption section on
Page 20. See through for information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See
through for total I
3
The minimum pulse width is the shortest pulse width at which the specified pulse-width distortion is guaranteed.
4
The maximum data rate is the fastest data rate at which the specified pulse-width distortion is guaranteed.
5
t
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. t
PHL
measured from the 50% level of the rising edge of the V
6
t
is the magnitude of the worst-case difference in t
PSK
within the recommended operating conditions.
7
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.
8
CMH is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 V
that can be sustained while maintaining V
magnitude is the range over which the common mode is slewed.
9
Dynamic supply current is the incremental amount of supply current required for a 1 Mbps increase in signal data rate. See through for information
on per-channel supply current for unloaded and loaded conditions. See the section on Page 20 for guidance on calculating the per-channel supply current for a given data rate.
Figure 8
Figure 14
Figure 10
and I
DD1
supply currents as a function of data rate for ADuM1400/ADuM1401/ADuM1402 channel configurations.
DD2
signal to the 50% level of the rising edge of the VOx signal.
Ix
or t
PHL
< 0.8 V. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. The transient
O
PHL
, t
PLH
20 38 50 ns CL = 15 pF, CMOS signal levels
PWD 3 ns CL = 15 pF, CMOS signal levels
PSK
t
PSKCD
t
PSKOD
PHL
, t
PLH
22 ns CL = 15 pF, CMOS signal levels
3 ns CL = 15 pF, CMOS signal levels
6 ns CL = 15 pF, CMOS signal levels
20 34 45 ns CL = 15 pF, CMOS signal levels
PWD 0.5 2 ns CL = 15 pF, CMOS signal levels
PSK
t
PSKCD
t
PSKOD
, t
t
PHZ
PLH
, t
t
PZH
PZL
F
|CMH| 25 35 kV/µs
16 ns CL = 15 pF, CMOS signal levels
2 ns CL = 15 pF, CMOS signal levels
5 ns CL = 15 pF, CMOS signal levels
6 8 ns CL = 15 pF, CMOS signal levels
6 8 ns CL = 15 pF, CMOS signal levels
3 ns CL = 15 pF, CMOS signal levels
= V
V
Ix
DD1/VDD2
, VCM = 1000 V,
transient magnitude = 800 V
|CML| 25 35 kV/µs
= 0 V, VCM = 1000 V,
V
Ix
transient magnitude = 800 V
r
DDI (D)
DDO (D)
that is measured between units at the same operating temperature, supply voltages, and output load
PLH
1.1 Mbps
0.10 mA/Mbps
0.03 mA/Mbps
. CML is the maximum common-mode voltage slew rate
DD2
Power Consumption
Figure 8
Figure 11
propagation delay is
PLH
Figure 10
Rev. B | Page 7 of 24
ADuM1400/ADuM1401/ADuM1402
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3 V OR 3 V/5 V OPERATION
5 V/3 V operation: 4.5 V ≤ V
specifications apply over the entire recommended operation range, unless otherwise noted; all typical specifications are at
T
= 25°C; V
A
= 3.0 V, V
DD1
Table 3.
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Input Supply Current, per Channel, Quiescent I
5 V/3 V Operation 0.50 0.53 mA
3 V/5 V Operation 0.26 0.31 mA
Output Supply Current, per Channel, Quiescent I
5 V/3 V Operation 0.11 0.14 mA
3 V/5 V Operation 0.19 0.21 mA
ADuM1400, Total Supply Current, Four Channels2
DC to 2 Mbps
V
Supply Current I
DD1
5 V/3 V Operation 2.2 2.8 mA DC to 1 MHz logic signal freq.
3 V/5 V Operation 1.2 1.9 mA DC to 1 MHz logic signal freq.
V
Supply Current I
DD2
5 V/3 V Operation 0.5 0.9 mA DC to 1 MHz logic signal freq.
3 V/5 V Operation 0.9 1.4 mA DC to 1 MHz logic signal freq.
10 Mbps (BRW and CRW Grades Only)
V
Supply Current I
DD1
5 V/3 V Operation 8.6 10.6 mA 5 MHz logic signal freq.
3 V/5 V Operation 4.5 6.5 mA 5 MHz logic signal freq.
V
Supply Current I
DD2
5 V/3 V Operation 1.4 2.0 mA 5 MHz logic signal freq.
3 V/5 V Operation 2.6 3.5 mA 5 MHz logic signal freq.
90 Mbps (CRW Grade Only)
V
Supply Current I
DD1
5 V/3 V Operation 76 100 mA 45 MHz logic signal freq.
3 V/5 V Operation 42 65 mA 45 MHz logic signal freq.
V
Supply Current I
DD2
5 V/3 V Operation 11 15 mA 45 MHz logic signal freq.
3 V/5 V Operation 21 25 mA 45 MHz logic signal freq.
ADuM1401, Total Supply Current, Four Channels2
DC to 2 Mbps
V
Supply Current I
DD1
5 V/3 V Operation 1.8 2.4 mA DC to 1 MHz logic signal freq.
3 V/5 V Operation 1.0 1.6 mA DC to 1 MHz logic signal freq.
V
Supply Current I
DD2
5 V/3 V Operation 0.7 1.2 mA DC to 1 MHz logic signal freq.
3 V/5 V Operation 1.2 1.8 mA DC to 1 MHz logic signal freq.
10 Mbps (BRW and CRW Grades Only)
V
Supply Current I
DD1
5 V/3 V Operation 7.1 9.0 mA 5 MHz logic signal freq.
3 V/5 V Operation 3.7 5.4 mA 5 MHz logic signal freq.
V
Supply Current I
DD2
5 V/3 V Operation 2.2 3.0 mA 5 MHz logic signal freq.
3 V/5 V Operation 4.1 5.0 mA 5 MHz logic signal freq.
≤ 5.5 V, 2.7 V ≤ V
DD1
= 5 V; or V
DD2
= 5 V, V
DD1
≤ 3.6 V; 3 V/5 V operation: 2.7 V ≤ V
DD2
= 3.0 V.
DD2
DDI (Q)
DDO (Q)
DD1 (Q)
DD2 (Q)
DD1 (10)
DD2 (10)
DD1 (90)
DD2 (90)
DD1 (Q)
DD2 (Q)
DD1 (10)
DD2 (10)
1
≤ 3.6 V, 4.5 V ≤ V
DD1
≤ 5.5 V; all min/max
DD2
Rev. B | Page 8 of 24
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