(micromodule) isolator. No external components are re-
quired. Individual 3V to 5.5V supplies power each side of
the digital isolator. Separate logic supply pins allow easy
interfacing with different logic levels from 1.62V to 5.5V,
independent of the main supply.
Module options are available with compatibility to SPI
(LTM2892-S) and I
2
C (LTM2892-I), master mode only,
specifications.
Coupled inductors provide 3500V
RMS
of isolation between
the input and output logic interface. This device is ideal
for systems where the ground loop is broken, allowing
uninterrupted communication through large common
mode transients faster than 50kV/μs.
L,
LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks
and HotSwap is a trademark of of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
n
n
n
n
n
n
6-Channel Logic Isolator: 3500V
RMS
for 1 Minute
3V to 5.5V Supply Operation
No External Components Required
SPI/Digital (LTM2892-S) or I
2
C (LTM2892-I) Options
High Common Mode Transient Immunity: 50kV/μs
High Speed Operation:
10MHz Digital Isolation
4MHz/8MHz SPI Isolation
400kHz I
2
C Isolation
Operation Up to 125°C (H-Grade)
1.62V to 5.5V Logic Supplies for Flexible Digital
Interfacing
±15kV ESD HBM Across the Isolation Barrier
Maximum Continuous Working Voltage: 850V
PEAK
Low Current Shutdown Mode (<10µA)
Small (9mm × 6.25mm × 2.91mm) BGA Package
applicaTions
n
n
n
n
Isolated SPI or I
2
C Interfaces
Industrial Systems
Test and Measurement Equipment
Breaking Ground Loops
Typical applicaTion
Isolated 4MHz SPI Interface
3V TO 5.5V
V
CC1
V
L1
ON1
EOUTD
INA
INB
INC
OUTD
OUTE
OUTF
GND1
LTM2892-S
VCC2
VL2
ON2
EOUTA
OUTA
OUTB
OUTC
IND
INE
INF
GND2
2892 TA01a
LTM2892 Operating Through 50kV/µs CM Transients
3V TO 5.5V
5V/DIV
5V/DIV
SCK
MOSI
SS
MISO
200V/
DIV
20ns/DIV
OUTA CONNECTED TO IND
GND2-GND1
INA
OUTD
SCK
MOSI
SS
MISO
ISOLATION BARRIER
2892 TA01b
For more information
www.linear.com/LTM2892
1
2892f
LTM2892
absoluTe MaxiMuM raTings
(Note 1)
V
CC1
to GND1 ............................................... –0.3V to 6V
V
L1
to GND1 ................................................. –0.3V to 6V
V
CC2
to GND2 ............................................... –0.3V to 6V
V
L2
to GND2................................................. –0.3V to 6V
Logic Inputs
INA, INB, INC, SCLIN, SDA1,
EOUTD,
ON1 to GND1 ............................ –0.3V to (V
L1
+ 0.3V)
INB, INC, IND, INE, INF, SDA2,
EOUTA,
ON2 to GND2 ............................–0.3V to (V
L2
+ 0.3V)
Logic Outputs
OUTB, OUTC, OUTD, OUTE,
OUTF to GND1 ......................... – 0.3V to (V
L1
+ 0.3V)
OUTA, OUTB, OUTC,
SCLOUT to GND2..................... – 0.3V to (V
L2
+ 0.3V)
Operating Temperature Range (Note 4)
LTM2892C ............................................... 0°C to 70°C
LTM2892I ............................................–40°C to 85°C
LTM2892H ......................................... –40°C to 125°C
Maximum Internal Operating Temperature............ 125°C
Storage Temperature Range .................. –55°C to 150°C
Peak Body Reflow Temperature ............................ 260°C
pin conFiguraTion
LTM2892-I
LTM2892-S
TOP VIEW
1
2
3
INA
4
ON1
5
V
L1
6
V
CC1
TOP VIEW
1
INA
A
B
2
INB
3
INC
4
ON1
5
V
L1
6
V
CC1
SCLIN SDA1
A
B
C
D
E
F
G
OUTB SDA1 OUTC
GND1
C
D
E
F
G
SCLOUT SDA2 OUTA
GND2
OUTD OUTE
OUTF
EOUTD
GND1
OUTA
H
J
OUTB OUTC
EOUTA
GND2
H
J
INB
SDA2
INC
ON2
V
L2
V
CC2
IND
INE
INF
ON2
V
L2
V
CC2
BGA PACKAGE
24-PIN (9mm
×
6.25mm
×
2.91mm)
T
JMAX
= 125°C,
θ
JA
= 30°C/W,
θ
JC(bottom)
= 15.7°C/W,
θ
JC(top)
= 25°C/W,
θ
JB
= 14.5°C/W
θ
VALUES DETERMINED PER JESD 51-9, WEIGHT = 0.3g
BGA PACKAGE
24-PIN (9mm
×
6.25mm
×
2.91mm)
T
JMAX
= 125°C,
θ
JA
= 30°C/W,
θ
JC(bottom)
= 15.7°C/W,
θ
JC(top)
= 25°C/W,
θ
JB
= 14.5°C/W
θ
VALUES DETERMINED PER JESD 51-9, WEIGHT = 0.3g
2
2892f
For more information
www.linear.com/LTM2892
LTM2892
orDer inForMaTion
LEAD FREE FINISH
LTM2892CY-I#PBF
LTM2892IY-I#PBF
LTM2892HY-I#PBF
LTM2892CY-S#PBF
LTM2892IY-S#PBF
LTM2892HY-S#PBF
TRAY
LTM2892CY-I#PBF
LTM2892IY-I#PBF
LTM2892HY-I#PBF
LTM2892CY-S#PBF
LTM2892IY-S#PBF
LTM2892HY-S#PBF
PART MARKING*
LTM2892Y-I
LTM2892Y-I
LTM2892Y-I
LTM2892Y-S
LTM2892Y-S
LTM2892Y-S
PACKAGE DESCRIPTION
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
24-Lead (9mm
×
6.25mm
×
2.91mm) BGA
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to:
http://www.linear.com/packaging/
This product is moisture sensitive. For more information go to:
http://www.linear.com/packaging/
elecTrical characTerisTics
SYMBOL
V
CC1
, V
CC2
V
L1
, V
L2
I
CC1
, I
CC2
I
L1
, I
L2
PARAMETER
Input Supply Range
Logic Supply Range
Input Supply Current
Logic Supply Current
LTM2892-S
LTM2892-I
CONDITIONS
Power Supplies
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC1
= 5V, V
CC2
= 5V, V
L1
= 3.3V, V
L2
= 3.3V, GND1 = GND2 = 0V,
ON1 = V
L1
, and ON2 = V
L2
unless otherwise noted. Specifications apply to all options unless otherwise noted.
MIN
l
l
l
l
l
l
l
TYP
MAX
5.5
5.5
5.5
UNITS
V
V
V
µA
mA
µA
µA
µA
µA
V
V
V
V
µA
mV
V
3
1.62
3
0
3.2
0
10
ON1 = ON2 = 0V
ON1 = V
L1
, ON2 = V
L2
ON1 = ON2 = 0V
LTM2892-S, ON1 = V
L1
, ON2 = V
L2
I
L1
, LTM2892-I, ON1 = V
L1
, ON2 = V
L2
I
L2
, LTM2892-I, ON1 = V
L1
, ON2 = V
L2
ON1, INx,
EOUTD,
1.62V ≤ V
L1
< 2.35V
ON1, INx,
EOUTD,
2.35V ≤ V
L1
ON2, INx,
EOUTA,
1.62V ≤ V
L2
< 2.35V
ON2, INx,
EOUTA,
2.35V ≤ V
L2
(Note 2)
OUTx, I
LOAD
= –1mA, 1.62V ≤ V
L1
< 3V
OUTx, I
LOAD
= –4mA, 3V ≤ V
L1
≤ 5.5V
OUTB (LTM2892-I), I
LOAD
= –2mA, 3V ≤ V
L1
≤ 5.5V
OUTx, I
LOAD
= –1mA, 1.62V ≤ V
L2
< 3V
OUTx, I
LOAD
= –4mA, 3V ≤ V
L2
≤ 5.5V
10
4.5
10
150
300
0.75•V
L1
0.67•V
L1
0.75•V
L2
0.67•V
L2
±1
Logic/SPI
V
ITH
Input Threshold Voltage
l
l
l
l
l
0.25•V
L1
0.33•V
L1
0.25•V
L2
0.33•V
L2
150
I
INL
V
HYS
V
OH
Input Current
Input Hysteresis
Output High Voltage
l
V
L1
– 0.4
V
L2
– 0.4
0.4
l
l
V
V
V
OL
Output Low Voltage
OUTx, I
LOAD
= 1mA, 1.62V ≤ V
L1
< 3V
OUTx, I
LOAD
= 4mA, 3V ≤ V
L1
≤ 5.5V
OUTB (LTM2892-I), I
LOAD
= 2mA, 3V ≤ V
L1
≤ 5.5V
OUTx, I
LOAD
= 1mA, 1.62V ≤ V
L2
< 3V
OUTx, I
LOAD
= 4mA, 3V ≤ V
L2
≤ 5.5V
l
l
0.4
±85
±85
V
mA
mA
mA
I
SC
Short-Circuit Current
0V ≤ OUTx ≤ V
L1
0V ≤ OUTB (LTM2892-I) ≤ V
L1
0V ≤ OUTx ≤ V
L2
±30
l
For more information
www.linear.com/LTM2892
3
2892f
LTM2892
elecTrical characTerisTics
SYMBOL
I
2
C
V
IL
V
IH
I
INL
V
HYS
V
OH
V
OL
C
IN
C
B
Low Level Input Voltage
High Level Input Voltage
Input Current
Input Hysteresis
Output High Voltage
Output Low Voltage
SCLIN, SDA1
SDA2
SCLIN, SDA1
SDA2
SCLIN, SDA1 = V
L1
or 0V
SDA2 = V
L2
, SDA2 = V
L2
= 0V
SCLIN, SDA1
SDA2
SCLOUT, I
LOAD
= –2mA
SDA1, I
LOAD
= 3mA, SCLOUT, I
LOAD
= 2mA
SDA2 = No Load, SDA1 = 0V, 4.5V ≤ V
L2
< 5.5V
SDA2 = No Load, SDA1 = 0V, 3V ≤ V
L2
< 4.5V
SCLIN, SDA1, SDA2 (Note 2)
SCLOUT, Standard Speed (Note 2)
SCLOUT, Fast Speed
SDA1, SDA2, SR ≥ 1V/μs, Standard Speed (Note 2)
SDA1, SDA2, SR ≥ 1V/μs, Fast Speed
SDA2 = 0, SDA1 = V
L1
0V ≤ SCLOUT ≤ V
L2
SDA1 = 0, SDA2 = V
L2
SDA1 = V
L1
, SDA2 = 0
GND2 to GND1
(V
CC2
, V
L2
, GND2) to (V
CC1
, V
L1
, GND1)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC1
= 5V, V
CC2
= 5V, V
L1
= 3.3V, V
L2
= 3.3V, GND1 = GND2 = 0V,
ON1 = V
L1
, and ON2 = V
L2
unless otherwise noted. Specifications apply to all options unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
0.3•V
L1
0.3•V
L2
0.7•V
L1
0.7•V
L2
±1
±1
0.05•V
L1
0.05•V
L2
V
L2
– 0.4
0.3
0.4
0.45
0.55
10
400
200
400
200
1
±30
6
–1.8
±15
±10
100
UNITS
V
V
V
V
µA
µA
mV
mV
V
V
V
V
pF
pF
pF
pF
pF
V/µs
mA
mA
mA
mA
kV
kV
Input Pin Capacitance
Bus Capacitive Load
SDA, SDA2 Slew Rate
I
SC
Short-Circuit Current
ESD (HBM)
(Note 2)
Isolation Boundary
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC1
= 5V, V
CC2
= 5V, V
L1
= 3.3V, V
L2
= 3.3V, GND1 = GND2 = 0V,
ON1 = V
L1
, and ON2 = V
L2
unless otherwise noted. Specifications apply to all options unless otherwise noted.
SYMBOL
Logic/SPI
Maximum Data Rate
INx
→
OUTx, C
L
= 15pF (Note 3)
Bidirectional SPI Communication
Unidirectional SPI Communication
INx
→
OUTx, C
L
= 15pF (Figure 1)
OUTx, C
L
= 15pF (Figure 1)
LTM2892-I, OUTB, C
L
= 15pF (Figure 1)
OUTB, OUTC, OUTE, OUTF (Note 2)
EOUTx
=
↓
to OUTx, R
L
= 1k, C
L
= 15pF (Figure 2)
EOUTx
=
↑
to OUTx, R
L
= 1k, C
L
= 15pF (Figure 2)
ONx =
↑
to OUTx, R
L
= 1k, C
L
= 15pF (Figure 4)
ONx =
↓
to OUTx, R
L
= 1k, C
L
= 15pF (Figure 4)
l
l
l
l
l
l
l
l
l
l
swiTching characTerisTics
PARAMETER
CONDITIONS
MIN
10
4
8
35
TYP
MAX
UNITS
MHz
MHz
MHz
t
PHL
, t
PLH
t
R
, t
F
t
PWU
t
PZH
, t
PZL
t
PHZ
, t
PLZ
t
PZH
, t
PZL
t
PHZ
, t
PLZ
Propagation Delay
Rise and Fall Time
Output Pulse Width Uncertainty
Output Enable Time
Output Disable Time
ONx Enable Time
ONx Disable Time
60
3
20
100
12.5
35
50
50
50
60
50
ns
ns
ns
ns
ns
ns
μs
ns
–20
4
2892f
For more information
www.linear.com/LTM2892
LTM2892
swiTching characTerisTics
SYMBOL
I
2
C
Maximum Data Rate
t
PHL
, t
PLH
t
R
Propagation Delay
(Note 3)
SCLIN
→
SCLOUT, C
L
= 15pF (Figure 1)
SDA1
→
SDA2, R
L
= Open, C
L
= 15pF (Figure 3)
SDA2
→
SDA1, R
L
= 1.1k, C
L
= 15pF (Figure 3)
SDA2, C
L
= 200pF (Figure 3)
SDA2, C
L
= 200pF (Figure 3)
SDA1, R
L
= 1.1k, C
L
= 200pF (Figure 3)
SCLOUT, C
L
= 200pF (Figure 3)
SDA2, C
L
= 200pF (Figure 3)
SDA1, R
L
= 1.1k, C
L
= 200pF (Figure 3)
SCLOUT, C
L
= 200pF (Figure 3)
SDA1, SDA2 (Note 2)
ON1 =
↑
to SDA1, R
L
= 1k, C
L
= 15pF (Figure 4)
ON2 =
↑
to (SCLOUT, SDA2), C
L
= 15pF (Figure 4)
ON1 =
↓
to SDA1, R
L
= 1k, C
L
= 15pF (Figure 4)
ON2 =
↓
to SCLOUT, R
L
= 1k, C
L
= 15pF (Figure 4)
ON2 =
↓
to SDA2, R
L
= Open, C
L
= 15pF (Figure 4)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC1
= 5V, V
CC2
= 5V, V
L1
= 3.3V, V
L2
= 3.3V, GND1 = GND2 = 0V,
ON1 = V
L1
, and ON2 = V
L2
unless otherwise noted. Specifications apply to all options unless otherwise noted.
PARAMETER
CONDITIONS
MIN
400
150
150
200
40
40
40
40
40
–20
225
250
350
300
250
250
250
250
250
250
50
60
50
50
225
0
50
TYP
MAX
UNITS
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
Rise Time
t
F
t
PWU
t
PZH
, t
PZL
t
PHZ
, t
PLZ
t
SP
Fall Time
Output Pulse Width Uncertainty
ONx Enable Time
ONx Disable Time
Pulse Width of Spikes
Suppressed by Input Filter
isolaTion characTerisTics
SYMBOL
V
ISO
PARAMETER
Rated Dielectric Insulation Voltage
Common Mode Transient Immunity
V
IORM
Maximum Continuous Working
Voltage
Partial Discharge
CTI
DTI
Comparative Tracking Index
Depth of Erosion
Distance Through Insulation
Input to Output Resistance
Input to Output Capacitance
Creepage Distance
T
A
= 25°C
MIN
3500
4200
50
850
600
5
600
0.1
0.1
10
12
3
5
TYP
MAX
UNITS
V
RMS
V
RMS
kV/µs
V
PEAK
V
RMS
pC
V
RMS
mm
mm
Ω
pF
mm
CONDITIONS
1 Minute, Derived from 1 Second Test
1 Second (Notes 5, 6)
V
CC1
= V
L1
= ON1 = 5V, V
CC2
= V
L2
= ON2 = 5V
V
CM
= 1kV, ∆t = 20ns (Note 2)
(Notes 2, 5)
V
PD
= 1590V
PEAK
(Note 5)
IEC 60112 (Note 2)
IEC 60112 (Note 2)
(Note 2)
(Notes 2, 5)
(Notes 2, 5)
(Note 2)
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
Guaranteed by design and not subject to production test.
Note 3:
Maximum data rate is guaranteed by other measured parameters
and is not tested directly.
Note 4:
This µModule isolator includes overtemperature protection that
is intended to protect the device during momentary overload conditions.
Junction temperature will exceed 125°C when overtemperature protection
is active. Continuous operation above specified maximum operating
junction temperature may result in device degradation or failure.
Note 5:
Device is considered a 2-terminal device. Pin group A1 through B6
shorted together and pin group H1 through J6 shorted together.
Note 6:
The rated dielectric insulation voltage should not be interpreted as
便携式医疗设备的特殊性决定了它们应该是对用户友好的、必须工作在无菌环境下，并且空间占用小、耗能低。 同时，便携式医疗设备还需要足够的计算能力以便处理医疗数据，能够连接到无线或有线接口以便记录和发送数据。从设计人员的角度考虑，上述需求需要低功耗的单片机（MCU）和数字信号控制器（Digital Signal Controller，DSC）。 正是有了嵌入式处理器，设计人员才有可能设...[详细]
Yamaha Motor Group旗下的i-PULSE有限公司日前已与华尔莱科技（Valor）结为合作伙伴关系，基于Valor的vPlan生产规划工具向i-PULSE组装设备的使用者提供完整的从设计到制造的NPI解决方案。在近期日本东京举办的Protec展会（6/11-6/13）上，i-PULSE首度展出了该新产品并将直接向其客户进行销售。 新产品的名称为“iPlan”，它将提供一系...[详细]
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