LTM2883
2
SPI/Digital or I C Module
Isolator with Adjustable 12.5V
and 5V Regulated Power
FEATURES DESCRIPTION
n
2500V for One Minute per UL1577 The LTM 2883 is a complete galvanic 6-channel digital
RMS
UL Recognized File #E151738 Module (micromodule) isolator. No external components
n
Isolated Adjustable DC Power: are required. A single 3.3V or 5V supply powers both
3V to 5V at Up to 30mA sides of the interface through an integrated, isolated DC/
12.5V at Up to 20mA DC converter. A logic supply pin allows easy interfacing
n
No External Components Required with different logic levels from 1.62V to 5.5V, independent
2
n
SPI (LTM2883-S) or I C (LTM2883-I) Options of the main supply.
n
High Common Mode Transient Immunity: 30kV/s
2
Available options are compliant with SPI and I C (master
n
High Speed Operation:
mode only) specifications.
10MHz Digital Isolation
The isolated side includes 12.5V and 5V nominal power
4MHz/8MHz SPI Isolation
2
supplies, each capable of providing more than 20mA of
400kHz I C Isolation
n load current. Each supply may be adjusted from its nominal
3.3V (LTM2883-3) or 5V (LTM2883-5) Operation
n value using a single external resistor.
1.62V to 5.5V Logic Supply
n
10kV ESD HBM Across the Isolation Barrier
Coupled inductors and an isolation power transformer
n
Maximum Continuous Working Voltage: 560V
PEAK
provide 2500V of isolation between the input and out-
RMS
n
Low Current Shutdown Mode (<10A)
put logic interface. This device is ideal for systems where
n
Low Profile (15mm 11.25mm 3.42mm)
the ground loop is broken, allowing for a large common
BGA Package
mode voltage range. Communication is uninterrupted for
common mode transients greater than 30kV/s.
APPLICATIONS
All registered trademarks and trademarks are the property of their respective owners.
2
n
Isolated SPI or I C Interfaces
n
Industrial Systems
n
Test and Measurement Equipment
n
Breaking Ground Loops
TYPICAL APPLICATION
Isolated 4MHz SPI Interface
LTM2883-5S
V
CC2 LTM2883 Operating Through 35kV/s CM Transient
5V AT 20mA
V
CC
AV
5V CC2
SCK
+
V V
L SD0
12.5V AT 20mA
+
AV SCK2 = SD02
ON
V
12.5V AT 15mA 2V/DIV
AV 2V/DIV
SDOE
CS CS2 REPETITIVE
CS CS
COMMON MODE
SDI SDI2
SDI SDI TRANSIENTS
SCK SCK2
SCK SCK
DO2 I2
SDO SDO2
200V/DIV
SDO SDO
2883 TA01b
DO1 I1
20ns/DIV
GND GND2
2883 TA01a
2883fd
1
For more information www.linear.com/LTM2883
ISOLATION BARRIERLTM2883
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V to GND .................................................. 0.3V to 6V Logic Outputs
CC
V to GND .................................................... 0.3V to 6V DO1, DO2, SDO to GND ..............0.3V to (V + 0.3V)
L L
+
V , AV , AV to GND2 ........................... 0.3V to 6V O1, SCK2, SDI2, CS2,
CC2 CC2
+
V to GND2 ................................................ 0.3V to 16V SCL2 to GND2 ........................0.3V to (V + 0.3V)
CC2
V , AV to GND2 .........................................0.3V to 16V Operating Temperature Range (Note 4)
Logic Inputs LTM2883C .........................................0C T 70C
A
DI1, SCK, SDI, CS, SCL, SDA, SDOE, LTM2883I ..................................... 40C T 85C
A
ON to GND ..................................0.3V to (V + 0.3V) LTM2883H ...................................40C T 105C
L A
I1, I2, SDA2, Maximum Internal Operating Temperature ............ 125C
SDO2 to GND2 ........................0.3V to (V + 0.3V) Storage Temperature Range .................. 40C to 125C
CC2
Peak Body Reflow Temperature ............................ 245C
PIN CONFIGURATION
LTM2883-I LTM2883-S
TOP VIEW TOP VIEW
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
DO2 DNC SCL SDA DI1 GND ON V SDO DO2 SCK SDI CS SDOE ON V
L L
A A
B B
DO1 GND V DO1 GND V
CC CC
C C
D D
E E
F F
G G
H H
+ +
J J
I1 GND2 AV AV AV I1 GND2 AV AV AV
CC2 CC2
K K
L L
+ +
I2 DNC SCL2 SDA2 O1 V V V SDO2 I2 SCK2 SDI2 CS2 V V V
CC2 CC2
BGA PACKAGE BGA PACKAGE
32-PIN (15mm 11.25mm 3.42mm) 32-PIN (15mm 11.25mm 3.42mm)
T = 125C, = 30C/W, = 15.7C/W, T = 125C, = 30C/W, = 15.7C/W,
JMAX JA JC(BOTTOM) JMAX JA JC(BOTTOM)
= 25C/W, = 14.5C/W = 25C/W, = 14.5C/W
JC(TOP) JBOARD JC(TOP) JBOARD
VALUES DETERMINED PER JESD51-9, WEIGHT = 1.2g VALUES DETERMINED PER JESD51-9, WEIGHT = 1.2g
2883fd
2
For more information www.linear.com/LTM2883