5 kV, 6-Channel, SPIsolator Digital
Isolator for SPI with Delay Clock
Data Sheet
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FEATURES
Supports up to 40 MHz SPI clock speed in delay clock mode
Supports up to 17 MHz SPI clock speed in 4-wire mode
4 high speed, low propagation delay, SPI signal isolation
channels
2 data channels at 250 kbps
Delayed compensation clock line
20-lead SOIC_IC with 8.3 mm creepage
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/µs
Safety and regulatory approvals
UL recognition per UL 1577
5000 V rms for 1 minute SOIC long package
CSA Component Acceptance Notice 5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM
= 849 V peak
APPLICATIONS
Industrial programmable logic controllers (PLC)
Sensor isolation
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The ADuM4150
1
is a 6-channel, SPIsolator™ digital isolator
optimized for isolated serial peripheral interfaces (SPIs). Based
on the Analog Devices, Inc., iCoupler® chip scale transformer
technology, the low propagation delay in the CLK, MO/SI,
MI/SO, and
SS
SPI bus signals supports SPI clock rates of up to
17 MHz. These channels operate with 13 ns propagation delay
and 1 ns jitter to optimize timing for SPI.
The ADuM4150 isolator also provides two additional independent
low data rate isolation channels, one channel in each direction.
Data in the slow channels is sampled and serialized for a 250 kbps
data rate with 2.5 µs of jitter.
The ADuM4150 supports a delay clock output on the master
side of the device. This output can be used with an additional
clocked port on the master to support 40 MHz clock performance.
See the Delay Clock section for more information.
Table 1. Related Products
Product Description
ADuM3150 3.75 kV, high speed, clock delayed
SPIsolator
ADuM3151/ADuM3152/
ADuM3153
3.75 kV, multichannel SPIsolator
ADuM3154 3.75 kV, multiple slave SPIsolator
ADuM4151/ADuM4152/
ADuM4153
5 kV, multichannel SPIsolator
ADuM4154 5 kV, multiple slave SPIsolator
1
Protected by U.S. Patents 5,952,849; 6,873,065; 6,262,600; and 7,075,329. Other patents are pending.
ENCODE
CLK
DELAY
CONTROL
BLOCK
DECODE
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
V
DD1
GND
1
MCLK
MO
MI
MSS
V
IA
V
OB
V
DD2
GND
2
SCLK
SI
SO
SSS
V
OA
V
IB
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
DCLK
GND
1
NIC
GND
2
9
10
12
11
ADuM4150
CONTROL
BLOCK
12371-001
