3.75 kV, 6-Channel, SPIsolator Digital

Isolator for SPI with Delay Clock

Data Sheet

ADuM3150

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 SSOP 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

APPLICATIONS

Industrial programmable logic controllers (PLC)

Sensor isolation

FUNCTIONAL BLOCK DIAGRAM

ENCODE

CLK

DELAY

CONTROL

BLOCK

DECODE

DECODE

ENCODE

ENCODE

DECODE

ENCODE

DECODE

MCLK

MO

MI

MSS

SCLK

SI

SO

SSS

1

2

3

4

5

6

7

8

20

19

18

17

16

15

14

13

DCLK

NIC

9

10

12

11

ADuM3150

CONTROL

BLOCK

Figure 1.

GENERAL DESCRIPTION

The ADuM31501 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 14 ns propagation delay

and 1 ns jitter to optimize timing for SPI.

The ADuM3150 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 ADuM3150 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

ADuM3151/ADuM3152/

ADuM3153

3.75 kV, multichannel SPI isolator

ADuM3154

3.75 kV, multiple slave SPI isolator

ADuM4150

5 kV, high speed, clock delayed

SPIsolator

ADuM4151/ADuM4152/

ADuM4153

5 kV, multichannel SPI isolator

ADuM4154

5 kV, multiple slave SPI isolator

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

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

www.analog.com