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ADuM3154 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADuM3154
Beschreibung 7-Channel Digital Isolator
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 23 Seiten
ADuM3154 Datasheet, Funktion
Data Sheet
3.75 kV, 7-Channel, SPIsolator
Multiple Slave, Digital Isolator for SPI
ADuM3154
FEATURES
Supports up to 17 MHz SPI clock speed
4 high speed, low propagation delay, SPI signal isolation
channels
Supports up to 4 slave devices
20-lead SSOP package with 5.1 mm creepage
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/µs
Safety and regulatory approvals
UL recognition per UL 1577
3750 V rms for 1 minute
CSA Component Acceptance Notice 5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 565 V peak
APPLICATIONS
Industrial programmable logic controllers (PLCs)
Sensor isolation
GENERAL DESCRIPTION
The ADuM31541 is an SPIsolator™ digital isolator optimized for
a serial peripheral interface (SPI) that includes support for up to
four slave devices. Based on the Analog Devices, Inc., iCoupler®
chip scale transformer technology, the low propagation delay and
jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals support
SPI clock rates of up to 17 MHz.
The ADuM3154 isolator also provides a slave select multiplexing
system that allows up to four slave devices to be serviced from
one isolator. When a target slave is selected, the slave select
signal propagates to the desired output with low propagation
delay, allowing tight timing control. The isolated SSx is addressed
through a 250 kbps low speed, 2-channel address bus, allowing
the target slave device to be changed in as little as 2.5 µs.
FUNCTIONAL BLOCK DIAGRAM
VDD1 1
GND1 2
MCLK 3
MO 4
MI 5
MSS 6
ADuM3154
ENCODE
ENCODE
DECODE
ENCODE
SSA0 7
SSA1 8
NIC 9
CONTROL
BLOCK
GND1 10
DECODE
DECODE
ENCODE
DECODE
MUX
CONTROL
BLOCK
NIC = NOT INTERNALLY CONNECTED
Figure 1.
20 VDD2
19 GND2
18 SCLK
17 SI
16 SO
15 SS0
14 SS1
13 SS2
12 SS3
11 GND2
Table 1. Related Products
Product
Description
ADuM3150
3. 75 kV, high speed, clock
delayed SPIsolator
ADuM3151/ADuM3152/ 3.75 kV, multichannel SPIsolator
ADuM3153
ADuM4150
5 kV, high speed, clock delayed
SPIsolator
ADuM4151/ADuM4152/ 5 kV, multichannel SPI solator
ADuM4153
ADuM4154
5 kV, multiple slave SPIsolator
1 Protected by U.S. Patents 5,952,849; 6,262,600; 6,873,065; and 7075329. Other patents are pending.
Rev. A
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2014–2015 Analog Devices, Inc. All rights reserved.
Technical Support
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ADuM3154 Datasheet, Funktion
Data Sheet
ADuM3154
ELECTRICAL CHARACTERISTICS—3.3 V OPERATION
All typical specifications are at TA = 25°C and VDD1 = VDD2 = 3.3 V. Minimum and maximum specifications apply over the entire
recommended operation range: 3.0 V ≤ VDD1 ≤ 3.6 V, 3.0 V ≤ VDD2 ≤ 3.6 V, and −40°C ≤ TA ≤ +125°C, unless otherwise noted.
Switching specifications are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 4. Switching Specifications
Parameter
MCLK, MO, SO
SPI Clock Rate
Data Rate Fast (MO, SO)
Propagation Delay
Pulse Width
Pulse Width Distortion
Codirectional Channel Matching1
Jitter, High Speed
MSS
Data Rate Fast
Propagation Delay
Pulse Width
Pulse Width Distortion
Setup Time2
Jitter, High Speed
SSA0, SSA1
Data Rate Slow
Propagation Delay
Pulse Width
Jitter, Low Speed
SSAx3 Minimum Input Skew4
A Grade
B Grade
Symbol Min Typ Max Min Typ Max Unit
Test Conditions/Comments
SPIMCLK
DRFAST
tPHL, tPLH
PW
PWD
tPSKCD
JHS
100
1
1
2
30
12.5
3
3
1
12.5 MHz
34 Mbps Within PWD limit
21 ns
50% input to 50% output
ns Within PWD limit
2 ns |tPLH − tPHL|
2 ns
ns
DRFAST
tPHL, tPLH
PW 100
PWD
MSSSETUP 1.5
JHS 1
2
34
12.5
3
10
1
34 Mbps Within PWD limit
34 ns
50% input to 50% output
ns Within PWD limit
3 ns |tPLH − tPHL|
ns
ns
DRSLOW
tPHL, tPLH
PW
JLS
tSSAx SKEW3
0.1
4
40
250
2.6 0.1
4
2.5
40
250 kbps Within PWD limit
2.6 µs
50% input to 50% output
µs Within PWD limit
2.5 µs
ns
1 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.
2 The MSS signal is glitch filtered in both speed grades, whereas the other fast signals are not glitch filtered in the B grade. To guarantee that MSS reaches the
output ahead of another fast signal, set up MSS prior to the competing signal by different times depending on speed grade.
3 SSAx = SSA1 or SSA2.
4 An internal asynchronous clock, not available to users, samples the low speed signals. If edge sequence in codirectional channels is critical to the end
application, the leading pulse must be at least 1 tSSAx SKEW ahead of a later pulse to guarantee the correct order or simultaneous arrival at the output.
Rev. A | Page 5 of 22

6 Page









ADuM3154 pdf, datenblatt
Data Sheet
ADuM3154
REGULATORY INFORMATION
The ADuM3154 is approved by the organizations listed in Table 11. See Table 16 and the Insulation Lifetime section for recommended
maximum working voltages for specific cross isolation waveforms and insulation levels.
Table 11.
UL
Recognized under 1577 Component
Recognition Program1
3750 V rms Single Protection
File E214100
CSA
Approved under CSA Component
Acceptance Notice #5A
Basic insulation per CSA 60950-1-07+A1+A2
and IEC 60950-1 2nd Ed.+A1+A2, 510 V rms
(721 V peak) maximum working voltage3
File 205078
VDE
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10):2006-122
Reinforced insulation, 565 V peak
File 2471900-4880-0001
1 In accordance with UL 1577, each ADuM3154 is proof tested by applying an insulation test voltage ≥4500 V rms for 1 second (current leakage detection limit = 10 µA).
2 In accordance with DIN V VDE V 0884-10, each ADuM3154 is proof tested by applying an insulation test voltage ≥525 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.
3 See Table 16 for recommended maximum working voltages under various operating conditions.
INSULATION AND SAFETY RELATED SPECIFICATIONS
Table 12.
Parameter
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
Minimum External Tracking (Creepage)
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Material Group
Symbol
L(I01)
L(I02)
CTI
Value
3750
5.1
5.1
0.017
>400
II
Unit
V rms
mm min
mm min
mm min
V
Test Conditions/Comments
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
Distance through insulation
DIN IEC 112/VDE 0303 Part 1
Material group (DIN VDE 0110, 1/89, Table 1)
Rev. A | Page 11 of 22

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