|
|
PDF LTM2883 Data sheet ( Hoja de datos )
| Número de pieza | LTM2883 | |
| Descripción | SPI/Digital or I2C uModule Isolator | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LTM2883 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
LTM2883
Features
SPI/Digital or I2C µModule
Isolator with Adjustable ±12.5V
and 5V Regulated Power
Description
n 2500VRMS for One Minute per UL1577
UL Recognized File #E151738
®
n Isolated Adjustable DC Power:
3V to 5V at Up to 30mA
±12.5V at Up to 20mA
n No External Components Required
n SPI (LTM2883-S) or I2C (LTM2883-I) Options
n High Common Mode Transient Immunity: 30kV/μs
n High Speed Operation:
10MHz Digital Isolation
4MHz/8MHz SPI Isolation
400kHz I2C Isolation
n 3.3V (LTM2883-3) or 5V (LTM2883-5) Operation
n 1.62V to 5.5V Logic Supply
n ±10kV ESD HBM Across the Isolation Barrier
n Maximum Continuous Working Voltage: 560VPEAK
n Low Current Shutdown Mode (<10µA)
n Low Profile (15mm × 11.25mm × 3.42mm)
BGA Package
Applications
n Isolated SPI or I2C Interfaces
n Industrial Systems
n Test and Measurement Equipment
n Breaking Ground Loops
The LTM®2883 is a complete galvanic 6-channel digital
µModule® (micromodule)isolator.Noexternalcomponents
are required. A single 3.3V or 5V supply powers both
sides of the interface through an integrated, isolated DC/
DC converter. A logic supply pin allows easy interfacing
with different logic levels from 1.62V to 5.5V, independent
of the main supply.
Available options are compliant with SPI and I2C (master
mode only) specifications.
The isolated side includes ±12.5V and 5V nominal power
supplies, each capable of providing more than 20mA of
load current. Each supply may be adjusted from its nominal
value using a single external resistor.
Coupled inductors and an isolation power transformer
provide 2500VRMS of isolation between the input and out-
put logic interface. This device is ideal for systems where
the ground loop is broken, allowing for a large common
mode voltage range. Communication is uninterrupted for
common mode transients greater than 30kV/μs.
L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks
and Easy Drive, Hot Swap, SoftSpan and TimerBlox are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Typical Application
Isolated 4MHz SPI Interface
LTM2883-5S
5V VCC
VL
ON
VCC2
AVCC2
V+
AV+
V–
AV–
SDOE
CS CS
SDI SDI
SCK SCK
DO2
SDO SDO
DO1
CS2
SDI2
SCK2
I2
SDO2
I1
GND GND2
5V AT 20mA
12.5V AT 20mA
–12.5V AT 15mA
CS
SDI
SCK
SDO
2883 TA01a
LTM2883 Operating Through 35kV/µs CM Transient
SCK
SD0
SCK2 = SD02
2V/DIV
2V/DIV
REPETITIVE
COMMON MODE
TRANSIENTS
200V/DIV
20ns/DIV
2883 TA01b
For more information www.linear.com/LTM2883
2883fc
1
1 page  
LTM2883
E lectrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications
GND2 = 0V, ON = VL unless otherwise noted.
aSrpeeactifTicAa=tio2n5s°Ca.pLpTlyMt2o8a8l3l -o3ptVioCCns=u3n.l3eVs,sLoTthMe2r8w8i3se-5nVoCteCd=.
5V,
VL
=
3.3V,
and
GND
=
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
I2C
VIL Low Level Input Voltage
VIH High Level Input Voltage
IINL Input Current
VHYS Input Hysteresis
VOH Output High Voltage
VOL Output Low Voltage
CIN Input Pin Capacitance
CB Bus Capacitive Load
SCL, SDA
SDA2
SCL, SDA
SDA2
SCL, SDA = VL or 0V
SCL, SDA
SDA2
SCL2, ILOAD = –2mA
DO2, ILOAD = –2mA
SSDDCOLA22,, ,VVILLLO==A33DVV=,,
ILOAD
2ILmOAAD
=
=
3mA
2mA
SDA2, No Load, SDA = 0V, 4.5V ≤ VCC2 < 5.5V
SDA2, No Load, SDA = 0V, 3V < VCC2 < 4.5V
SCL, SDA, SDA2 (Note 2)
SCL2, Standard Speed (Note 2)
SCL2, Fast Speed
SDA, SDA2, SR ≥ 1V/μs, Standard Speed (Note 2)
SDA, SDA2, SR ≥ 1V/μs, Fast Speed
l
l
l 0.7 • VL
l 0.7 • VCC2
l
0.3
0.3 •
•VVCCL2
±1
0.05
0.05 •
•VVCLC2
l VCC2 – 0.4
l VL – 0.4
l
l
l
l
l 0.3
0.4
0.4
0.4
0.45
0.55
l 10
l 400
l 200
l 400
l 200
V
V
V
V
µA
mV
mV
V
V
V
V
V
V
V
pF
pF
pF
pF
pF
Minimum Bus Slew Rate
SDA, SDA2
l1
V/µs
ISC Short-Circuit Current
SDA2 = 0, SDA = VL
0V ≤ SCL2 ≤ VCC2
0V ≤ DO2 ≤ VL
SDA
SDA
=
=
0V,L,SSDDAA22==V0CC2
l 100 mA
±30 mA
±30 mA
6 mA
–1.8 mA
ESD (HBM) (Note 2)
Isolation Boundary
(VCC2, V+, V–, GND2) to (VCC, VL, GND)
±10 kV
S witching Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications
GND2 = 0V, ON = VL unless otherwise noted.
aSrpeeactifTicAa=tio2n5s°Ca.pLpTlyMt2o8a8l3l -o3ptVioCCns=u3n.l3eVs,sLoTthMe2r8w8i3se-5nVoCteCd=.
5V,
VL
=
3.3V,
and
GND
=
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Logic
Maximum Data Rate
tPHL, tPLH Propagation Delay
tR Rise Time
tF Fall Time
SPI
Ix → DOx, CL = 15pF (Note 3)
CL = 15pF (Figure 1)
CL = 15pF (Figure 1)
LTM2883-I, DO2, CL = 15pF (Figure 1)
CL = 15pF (Figure 1)
LTM2883-I, DO2, CL = 15pF (Figure 1)
l 10
l 35
l
l
l
l
MHz
60 100
ns
3 12.5
20 35
ns
ns
3 12.5
20 35
ns
ns
Maximum Data Rate
Bidirectional Communication (Note 3)
Unidirectional Communication (Note 3)
l4
l8
MHz
MHz
tPHL, tPLH Propagation Delay
tPWU Output Pulse Width Uncertainty
CL = 15pF (Figure 1)
SDI2, CS2 (Note 2)
l 35
60 100
–20 50
ns
ns
For more information www.linear.com/LTM2883
2883fc
5
5 Page 
LTM2883
Typical
LTM2883-5 VCC
=P5eV,rVLf=o3.3rV,mGNDa=nGNcDe2 =C0Vh, OaNr= VaL ucntleessrothiesrwtiisecnsotedT.A
=
25°C,
LTM2883-3
VCC
=
3.3V,
VCC2 Ripple
V+ Ripple
V– Ripple
2mV/DIV
I+ = 1mA
5mV/DIV
I+ = 20mA
I– = 1mA
5mV/DIV
I– = 20mA
500ns/DIV
2883 G25
500ns/DIV
2883 G26
500ns/DIV
2883 G27
VCC2 Noise
V+ Noise
V– Noise
2mV/DIV
2mV/DIV
2mV/DIV
1ms/DIV
2883 G28
1ms/DIV
2883 G29
1ms/DIV
2883 G30
vVsCCSiSnugpleplCyhCaunrnreenl tData Rate
70
CL = 1nF
CL = 330pF
VCC
ICC2
=
=
5I+V=
I–
=
0
60 CL = 100pF
CL = 20pF
50
40
30
20
10
1k
10k 100k 1M 10M 100M
DATA RATE (Hz)
2883 G31
Logic Input Threshold
vs VL Supply Voltage
3.5
3.0
2.5
INPUT RISING
2.0
INPUT FALLING
1.5
1.0
0.5
0
123456
VL SUPPLY VOLTAGE (V)
2883 G32
For more information www.linear.com/LTM2883
Logic Output Voltage
vs Load Current
6.0
5.0
VL = 5.5V
4.0
VL = 3.3V
VL = 1.62V
3.0
2.0
1.0
0
0 1 2 3 4 5 6 7 8 9 10
LOAD CURRENT (mA)
2883 G33
2883fc
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LTM2883.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LTM2881 | Transceiver + Power |  Linear Technology Corporation |
| LTM2882 | uModule Transceiver Power | Linear Technology |
| LTM2883 | SPI/Digital or I2C uModule Isolator | Linear Technology |
| LTM2884 | Isolated USB Transceiver | Linear Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |