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ADM3051 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADM3051
Beschreibung High Speed Industrial CAN Transceiver
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 17 Seiten
ADM3051 Datasheet, Funktion
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
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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.
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Tel: 781.329.4700 ©2011–2016 Analog Devices, Inc. All rights reserved.
Technical Support
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ADM3051 Datasheet, Funktion
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
VCC
Digital Input Voltage
TxD
Digital Output Voltage
RxD
CANH, CANL
VREF
RS
Operating Temperature Range
Storage Temperature Range
ESD (Human Body Model) on All Pins
Lead Temperature
Soldering (10 sec)
Vapor Phase (60 sec)
Infrared (15 sec)
θJA Thermal Impedance
TJ Junction Temperature
Rating
−0.3 V to +7 V
−0.3 V to VCC + 0.3 V
−0.3 V to VCC + 0.3 V
−36 V to +36 V
−0.3 V to VCC + 0.3 V
−0.3 V to VCC + 0.3 V
−40°C to +125°C
−55°C to +150°C
4 kV
300°C
215°C
220°C
110°C/W
150°C
ADM3051
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ESD CAUTION
Rev. A | Page 5 of 16

6 Page









ADM3051 pdf, datenblatt
Data Sheet
TEST CIRCUITS AND SWITCHING CHARACTERISTICS
CANH
TxD
VOD VCANH
RL
2
RL
2
VOC
CANL
VCANL
Figure 23. Driver Voltage Measurements
CANH
TxD
RL CL
RxD
CANL
30pF
Figure 24. Switching Characteristics Measurements
VRxD
ADM3051
CANH
VID
CANL
RxD
CL
Figure 25. Receiver Voltage Measurements
VHYS
HIGH
LOW
0.5 0.9
Figure 26. Receiver Input Hysteresis
VID (V)
VCC
TxD
0V
VOD
VDIFF
VOR
VCC
RxD
0V
0.3VCC
0.7VCC
0.9V
tonTxD
VDIFF = VCANH – VCANL
0.5V
toffTxD
tonRxD
0.3VCC
toffRxD
Figure 27. Driver and Receiver Propagation Delay
0.7VCC
VCC
RS
0V
VCC
RxD
tWAKE
0V
NOTES:
1. TxD = 0V
Figure 28. Wake-Up Delay Returning from Standby Mode
Rev. A | Page 11 of 16

12 Page





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