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PDF ADM3051 Data sheet ( Hoja de datos )
| Número de pieza | ADM3051 | |
| Descripción | High Speed Industrial CAN Transceiver | |
| Fabricantes | Analog Devices | |
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Data Sheet
High Speed Industrial CAN Transceiver
with Bus Protection for 24 V Systems
ADM3051
FEATURES
Physical layer CAN transceiver
5 V operation on VCC
Complies with ISO 11898 standard
High speed data rates up to 1 Mbps
Short-circuit protection on CANH and CANL against shorts to
power/ground in 24 V systems
Unpowered nodes do not disturb the bus
Connect 110 or more nodes on the bus
Slope control for reduced EMI
Thermal shutdown protection
Low current standby mode
Industrial operating temperature range (−40°C to +125°C)
Available in 8-lead SOIC package
APPLICATIONS
CAN data buses
Industrial field networks
DeviceNet applications
CanOpen, CanKingdom
GENERAL DESCRIPTION
The ADM3051 is a controller area network (CAN) physical
layer transceiver allowing a protocol layer CAN controller to
access the physical layer bus. The ADM3051 complies with
the ISO 11898 standard. It is capable of running at data rates up
to 1 Mbps.
The device has current-limiting and thermal shutdown features
to protect against output short circuits and situations where the
bus may be shorted to ground or power terminals in 24 V bus
power systems. The part is fully specified over the industrial
temperature range of −40°C to +125°C and is available in an
8-lead SOIC package.
FUNCTIONAL BLOCK DIAGRAM
VCC
THERMAL
SHUTDOWN
TxD D
RS MODE
RxD
R
VREF
VOLTAGE
REFERENCE
ADM3051
CANH
CANL
GND
Figure 1.
Three operating modes are available: high speed, slope control,
and standby. Pin 8 (RS) is used to select the operating mode.
The low current standby mode can be selected by applying a
logic high to RS.
The device can be set to operate with slope control to limit EMI
by connecting RS with a resistor to ground to modify the rise
and fall of slopes. This mode facilitates the use of unshielded
cables. Alternatively, disabling slope control by connecting RS
to ground allows high speed operation. Shielded cables or other
measures to control EMI are necessary in this mode.
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. 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 ©2011–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADM3051
Data Sheet
TIMING SPECIFICATIONS
All voltages are relative to ground (Pin 2); 4.5 V ≤ VCC ≤ 5.5 V. TA = −40°C to +125°C, unless otherwise noted.
Table 2.
Parameter
DRIVER
Maximum Data Rate
Propagation Delay from TxD On to Bus
Active
Propagation Delay from TxD Off to Bus
Inactive
RECEIVER
Propagation Delay from TxD On to
Receiver Active
Propagation Delay from TxD Off to
Receiver Inactive
Bus Dominant to RxD Low
CANH, CANL Slew Rate
TIME TO WAKE-UP FROM STANDBY
Symbol Min Typ Max Unit Test Conditions/Comments
1 Mbps VRS = 1 V
tonTxD
50 ns
VRS = 1 V, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
toffTxD
40 80 ns
VRS = 1 V, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
tonRxD
toffRxD
tdRxDL
|SR|
tWAKE
55 120 ns
VRS = 1 V, RL = 60Ω, CL = 100 pF, see Figure 24,
Figure 27
440 600 ns
RSLOPE = 47 kΩ, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
90 190 ns
RSLOPE = 0 Ω, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
290 400 ns
RSLOPE = 47 kΩ, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
3 μs VRS = 4 V, VTxD = 4 V, RL = 60 Ω, CL = 100 pF, see
Figure 24, Figure 29
7 V/μs RSLOPE = 47 kΩ, RL = 60 Ω, CL = 100 pF, see Figure 24,
Figure 27
20 μs
VTxD = 1 V, see Figure 28
Rev. A | Page 4 of 16
5 Page 
ADM3051
2.80
2.75
2.70
2.65
2.60
2.55
2.50
2.45
2.40
–50
IREF = +50µA
IREF = –50µA
IREF = +5µA
IREF = –5µA
–25 0
25 50 75
TEMPERATURE (°C)
Figure 21. VREF vs. Temperature
100 125
Data Sheet
50
45
40
35
30
25
20
15
10
5
0
0 10 20 30 40 50 60 70
RESISTANCE, RS (kΩ)
Figure 22. Driver Slew Rate vs. Resistance, RSLOPE
80
Rev. A | Page 10 of 16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ADM3051.PDF ] | |
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