5 kV, 7-Channel,
SPIsolator Digital Isolators for SPI
Data Sheet
ADuM4151/ADuM4152/ADuM4153
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Supports up to 17 MHz SPI clock speed
4 high speed, low propagation delay, SPI signal isolation
channels
V
1
2
20
19
V
DD1
GND
DD2
GND
ADuM4151
ENCODE
1
2
DECODE
DECODE
ENCODE
DECODE
MCLK
MO
3
18 SCLK
ENCODE
Three 250 kbps data channels
SI
4
17
16
15
14
13
12
11
20-lead SOIC_IC package with 8.3 mm creepage
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/µs
Safety and regulatory approvals
DECODE
SO
SSS
MI
5
ENCODE
MSS
6
V
V
7
IA
OA
UL recognition per UL 1577
CONTROL
BLOCK
CONTROL
BLOCK
V
V
8
IB
OB
5000 V rms for 1 minute SOIC long package
CSA Component Acceptance Notice 5A
VDE certificate of conformity
V
V
9
OC
IC
GND
GND
1
10
2
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
Maximum working insulation voltage (VIORM): 849 V peak
Figure 1. ADuM4151 Functional Block Diagram
V
1
2
20
19
V
DD1
DD2
ADuM4152
ENCODE
APPLICATIONS
GND
GND
1
2
DECODE
DECODE
ENCODE
DECODE
Industrial programmable logic controllers (PLCs)
Sensor isolation
MCLK
MO
3
18 SCLK
ENCODE
SI
4
17
16
15
14
13
12
11
DECODE
GENERAL DESCRIPTION
SO
SSS
MI
5
ENCODE
The ADuM4151/ADuM4152/ADuM41531 are 7-channel,
SPIsolator™ digital isolators optimized for isolated serial peripheral
interfaces (SPIs). Based on the Analog Devices, Inc., iCoupler®
chip scale transformer technology, the low propagation delay in
MSS
6
V
V
7
IA
OA
CONTROL
BLOCK
CONTROL
BLOCK
V
V
8
OB
IB
V
V
9
OC
IC
SS
the CLK, MO/SI, MI/SO, and SPI bus signals supports SPI
clock rates of up to 17 MHz. These channels operate with 14 ns
propagation delay and 1 ns jitter to optimize timing for SPI.
GND
GND
1
10
2
Figure 2. ADuM4152 Functional Block Diagram
The ADuM4151/ADuM4152/ADuM4153 isolators also provide
three additional independent low data rate isolation channels in
three different channel direction combinations. Data in the slow
channels is sampled and serialized for a 250 kbps data rate with
up to 2.5 µs of jitter in the low speed channels.
V
1
2
20
19
V
DD1
DD2
ADuM4153
ENCODE
GND
GND
1
2
DECODE
DECODE
ENCODE
DECODE
MCLK
MO
3
18 SCLK
ENCODE
SI
4
17
16
15
14
13
12
11
DECODE
SO
SSS
MI
5
ENCODE
MSS
6
V
V
7
OA
IA
CONTROL
BLOCK
CONTROL
BLOCK
V
V
8
OB
IB
V
V
9
OC
IC
GND
GND
1
10
2
Figure 3. ADuM4153 Functional Block Diagram
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,262,600; and 7,075,329. Other patents are pending.
Rev. A Document Feedback
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