LTM2892
2
SPI/Digital or I C
Module Isolator
Fea T Descrip T
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6-Channel Logic Isolator: 3500V for 1 Minute The LTM 2892 is a complete galvanic digital Module
RMS
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UL-CSA Recognized File #E151738 (micromodule) isolator. No external components are re-
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3V to 5.5V Supply Operation quired. Individual 3V to 5.5V supplies power each side of
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No External Components Required the digital isolator. Separate logic supply pins allow easy
2
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SPI/Digital (LTM2892-S) or I C (LTM2892-I) Options interfacing with different logic levels from 1.62V to 5.5V,
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High Common Mode Transient Immunity: 50kV/s independent of the main supply.
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High Speed Operation:
Module options are available with compatibility to SPI
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10MHz Digital Isolation
2
(LTM2892-S) and I C (LTM2892-I), master mode only,
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4MHz/8MHz SPI Isolation
specifications.
2
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400kHz I C Isolation
n Coupled inductors provide 3500V of isolation between
Operation Up to 125C (H-Grade) RMS
n the input and output logic interface. This device is ideal
1.62V to 5.5V Logic Supplies for Flexible Digital Inter-
for systems where the ground loop is broken, allowing
facing
n uninterrupted communication through large common
15kV ESD HBM Across the Isolation Barrier
n mode transients faster than 50kV/s.
Maximum Continuous Working Voltage: 850V
PEAK
n L, LT, LTC, LTM, Linear Technology, the Linear logo and Module are registered trademarks
Low Current Shutdown Mode (<10A)
and HotSwap is a trademark of of Linear Technology Corporation. All other trademarks are the
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Small (9mm 6.25mm 2.91mm) BGA Package property of their respective owners.
a T
2
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Isolated SPI or I C Interfaces
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Industrial Systems
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Test and Measurement Equipment
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Breaking Ground Loops
Typical a T
Isolated 4MHz SPI Interface LTM2892 Operating Through 50kV/s CM Transients
LTM2892-S
V
V
3V TO 5.5V CC1 CC2 3V TO 5.5V
INA
V
V 5V/DIV
L1 L2
OUTD
ON1
ON2 5V/DIV
EOUTD
EOUTA
INA
OUTA
SCK SCK
INB
OUTB
MOSI MOSI
INC
OUTC
SS SS
GND2-GND1
OUTD
IND
MISO MISO
200V/
OUTE INE
DIV
OUTF INF
2892 TA01b
20ns/DIV
OUTA CONNECTED TO IND
GND1 GND2
2892 TA01a
2892fa
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For more information www.linear.com/LTM2892
ISOLATION BARRIER
ion pplica
ions pplica
ion uresLTM2892
a Te Maxi Mu M r a T
(Note 1)
V to GND1 ............................................... 0.3V to 6V Logic Outputs
CC1
V to GND1 ................................................. 0.3V to 6V OUTB, OUTC, OUTD, OUTE,
L1
V to GND2 ............................................... 0.3V to 6V OUTF to GND1 ......................... 0.3V to (V + 0.3V)
CC2 L1
V to GND2 ................................................. 0.3V to 6V OUTA, OUTB, OUTC,
L2
Logic Inputs SCLOUT to GND2 ..................... 0.3V to (V + 0.3V)
L2
INA, INB, INC, SCLIN, SDA1, EOUTD, Operating Temperature Range (Note 4)
ON1 to GND1 ............................ 0.3V to (V + 0.3V) LTM2892C ............................................... 0C to 70C
L1
INB, INC, IND, INE, INF, SDA2, EOUTA, LTM2892I ............................................40C to 85C
ON2 to GND2 ............................0.3V to (V + 0.3V) LTM2892H ......................................... 40C to 125C
L2
Maximum Internal Operating Temperature ............ 125C
Storage Temperature Range .................. 55C to 150C
Peak Body Reflow Temperature ............................260C
p in c F T
LTM2892-I LTM2892-S
TOP VIEW TOP VIEW
1 2 3 4 5 6 1 2 3 4 5 6
SCLIN SDA1 INA ON1 V V INA INB INC ON1 V V
L1 CC1 L1 CC1
A A
B B
OUTB SDA1 OUTC GND1 OUTD OUTE OUTF EOUTD GND1
C C
D D
E E
F F
G G
SCLOUT SDA2 OUTA GND2 OUTA OUTB OUTC EOUTA GND2
H H
J J
INB SDA2 INC ON2 V V IND INE INF ON2 V V
L2 CC2 L2 CC2
BGA PACKAGE BGA PACKAGE
24-PIN (9mm 6.25mm 2.91mm) 24-PIN (9mm 6.25mm 2.91mm)
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) JB JC(top) JB
VALUES DETERMINED PER JESD 51-9, WEIGHT = 0.3g VALUES DETERMINED PER JESD 51-9, WEIGHT = 0.3g
2892fa
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For more information www.linear.com/LTM2892
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