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ADUM3440 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADUM3440
Beschreibung (ADUM3440 - ADUM3442) Quad Channel High Speed Digital Isolators
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
ADUM3440 Datasheet, Funktion
Data Sheet
Quad Channel, High Speed
Digital Isolators
ADuM3440/ADuM3441/ADuM3442
FEATURES
Low power operation
5 V operation
1.7 mA per channel maximum @ 0 Mbps to 2 Mbps
68 mA per channel maximum @ 150 Mbps
3.3 V operation
1.0 mA per channel maximum @ 0 Mbps to 2 Mbps
33 mA per channel maximum @ 150 Mbps
Bidirectional communication
3.3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 150 Mbps (NRZ)
Precise timing characteristics
5 ns maximum pulse width distortion
5 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
16-lead SOIC wide body package
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
APPLICATIONS
High speed multichannel isolation
SPI interface/data converter isolation
Instrumentation
GENERAL DESCRIPTION
The ADuM344x1 are four channel, digital isolators based on the
Analog Devices, Inc., iCoupler® technology supporting data rates
up to 150 Mbps. 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 discrete
components is eliminated with these iCoupler products.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.
Rev. D
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
FUNCTIONAL BLOCK DIAGRAMS
VDD1 1
GND1 2
VIA 3
ENCODE
ADuM3440 16 VDD2
15 GND2
DECODE
14 VOA
VIB 4
ENCODE
DECODE
13 VOB
VIC 5
ENCODE
DECODE
12 VOC
VID 6
NC 7
GND1 8
ENCODE
DECODE
11 VOD
10 VE2
9 GND2
Figure 1. ADuM3440 Functional Block Diagram
VDD1 1
GND1 2
VIA 3
ENCODE
ADuM3441 16 VDD2
15 GND2
DECODE
14 VOA
VIB 4
ENCODE
DECODE
13 VOB
VIC 5
ENCODE
DECODE
12 VOC
VOD 6
VE1 7
GND1 8
DECODE
ENCODE
11 VID
10 VE2
9 GND2
Figure 2. ADuM3441 Functional Block Diagram
VDD1 1
GND1 2
VIA 3
VIB 4
ENCODE
ENCODE
ADuM3442 16 VDD2
15 GND2
DECODE
14 VOA
DECODE
13 VOB
VOC 5
DECODE
ENCODE
12 VIC
VOD 6
VE1 7
GND1 8
DECODE
ENCODE
11 VID
10 VE2
9 GND2
Figure 3. ADuM3442 Functional Block Diagram
Furthermore, iCoupler devices consume one-tenth to one-sixth
the power of optocouplers at comparable signal data rates.
The ADuM344x isolators provide four independent isolation
channels in a variety of channel configurations (see the
Ordering Guide). The ADuM344x operates with the supply
voltage on either side ranging from 3.0 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling
voltage translation functionality across the isolation barrier. In
addition, the ADuM344x provides low pulse width distortion
and tight channel-to-channel matching. Unlike other opto-
coupler alternatives, the ADuM344x isolators have a patented
refresh feature that ensures dc correctness in the absence of
input logic transitions and during the power-up/power-down
condition.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2007–2012 Analog Devices, Inc. All rights reserved.






ADUM3440 Datasheet, Funktion
ADuM3440/ADuM3441/ADuM3442
Data Sheet
Parameter
Symbol Min Typ Max Unit
Test Conditions
For All Models
Output Disable Propagation Delay
(High/Low to High Impedance)
tPHZ, tPLH
6 8 ns
CL = 15 pF, CMOS signal levels
Output Enable Propagation Delay
(High Impedance to High/Low)
tPZH, tPZL
6 8 ns
CL = 15 pF, CMOS signal levels
Output Rise/Fall Time (10% to 90%)
Common-Mode Transient Immunity
at Logic High Output7
tR/tF
|CMH|
3
25 35
ns
kV/µs
CL = 15 pF, CMOS signal levels
VIx = VDD1 or VDD2, VCM = 1000 V,
transient magnitude = 800 V
Common-Mode Transient Immunity
at Logic Low Output7
|CML|
25 35
kV/µs
VIx = 0 V, VCM = 1000 V,
transient magnitude = 800 V
Refresh Rate
Input Dynamic Supply Current per Channel8
Output Dynamic Supply Current per Channel8
fr
IDDI (D)
IDDO (D)
1.1
0.076
0.028
Mbps
mA/Mbps
mA/Mbps
1 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.
See Figure 8 through Figure 10 for information on per-channel supply current as a function of data rate for unloaded and loaded conditions. See Figure 11 through
Figure 15 for total VDD1 and VDD2 supply currents as a function of data rate for ADuM3440/ADuM3441/ADuM3442 channel configurations.
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 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 VDDO. 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 signal data rate. See Figure 8 through Figure 10 for information
on per-channel supply current for unloaded and loaded conditions. See the Power Consumption section for guidance on calculating the per-channel supply current
for a given data rate.
Rev. D | Page 6 of 24

6 Page









ADUM3440 pdf, datenblatt
ADuM3440/ADuM3441/ADuM3442
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Ambient temperature = 25°C, unless otherwise noted.
Table 9.
Parameter
Storage Temperature Range (TST)
Ambient Operating Temperature Range (TA)
Supply Voltages (VDD1, VDD2)1
Input Voltage (VIA, VIB, VIC, VID, VE1, VE2)1, 2
Output Voltage (VOA, VOB, VOC, VOD)1, 2
Average Output Current per Pin3
Side 1 (IO1)
Side 2 (IO2)
Common-Mode Transients (CMH, CML)4
Rating
−65°C to +150°C
−40°C to +105°C
−0.5 V to +7.0 V
−0.5 V to VDD1 + 0.5 V
−0.5 V to VDDO + 0.5 V
−18 mA to +18 mA
−22 mA to +22 mA
−100 kV/µs to
+100 kV/µs
1 All voltages are relative to their respective ground.
2 VDDI and VDDO refer to the supply voltages on the input and output sides of a
given channel, respectively. See the PC Board Layout section.
3 See Figure 4 for maximum rated current values for various temperatures.
4 Refers to common-mode transients across the insulation barrier. Common-
mode transients exceeding the Absolute Maximum Ratings can cause latch-
up or permanent damage.
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
Table 10. Maximum Continuous Working Voltage1
Parameter
Max Unit
Constraint
AC Voltage, Bipolar Waveform
565 V peak 50-year minimum lifetime
AC Voltage, Unipolar Waveform
Basic Insulation
1131 V peak Maximum approved working voltage per IEC 60950-1
Reinforced Insulation
560 V peak Maximum approved working voltage per IEC 60950-1 and VDE V 0884-10
DC Voltage
Basic Insulation
1131 V peak Maximum approved working voltage per IEC 60950-1
Reinforced Insulation
560 V peak Maximum approved working voltage per IEC 60950-1 and VDE V 0884-10
1 Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details.
Table 11. Truth Table (Positive Logic)
VIX Input1
H
VEX Input2 VDDI State1 VDDO State1 VOX Output1 Notes
H or NC Powered Powered H
L H or NC Powered Powered L
X L Powered Powered Z
X H or NC Unpowered Powered H
X L Unpowered Powered Z
Outputs return to the input state within 1 µs of VDDI power restoration.
X X Powered Unpowered Indeterminate Outputs return to the input state within 1 µs of VDDO power
restoration if VEX state is H or NC. Outputs return to high impedance
state within 8 ns of VDDO power restoration if VEX state is L.
1 VIX and VOX refer to the input and output signals of a given channel (A, B, C, or D). VEX refers to the output enable signal on the same side as the VOX outputs. VDDI and
VDDO refer to the supply voltages on the input and output sides of the given channel, respectively.
2 In noisy environments, connecting VEX to an external logic high or low is recommended.
Rev. D | Page 12 of 24

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