LTP5900-WHM
SmartMesh WirelessHART Node
Wireless Mote Module
NETWORK FEATURES
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DESCRIPTION
SmartMesh WirelessHART wireless sensor networks are
self managing, low power networks built from wireless
nodes called motes. The
LTP™5900-WHM
is the 22-pin
WirelessHART mote product in the Eterna
®
* family of
IEEE 802.15.4 printed circuit board assembly solutions,
featuring a highly-integrated, low power radio design
by Dust Networks
®
as well as an ARM Cortex-M3 32-bit
microprocessor running Dust’s embedded SmartMesh
WirelessHART networking software. The LTP5900-WHM
provides a forward compatible solution for customers
using Dust Networks M2510 PCB module.
With Dust’s time-synchronized WirelessHART networks,
all motes in the network may route, source or terminate
data, while providing many years of battery powered op-
eration. The SmartMesh WirelessHART software provided
with the LTP5900-WHM is fully tested and validated, and
is readily configured via a software Application Program-
ming Interface (API).
SmartMesh WirelessHART motes deliver a highly flexible
network with proven reliability and low power performance
in an easy-to-integrate platform.
L,
LT, LTC, LTM, Eterna, SmartMesh, Linear Technology, the Linear logo, Dust and Dust
Networks are registered trademarks and LTP and the Dust Networks logo are trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 7375594, 7420980, 7529217, 7791419, 7881239,
7898322, 8222965.
* Eterna is Dust Networks’ low power radio SoC architecture.
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Complete
Radio Transceiver, Embedded Processor,
and Networking Software
for Forming a Self-Healing
Mesh Network
Compliant to WirelessHART (IEC62591) Standard
SmartMesh
®
Networks Incorporate:
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Time Synchronized Network-Wide Scheduling
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Per Transmission Frequency Hopping
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Redundant Spatially Diverse Topologies
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Network-Wide Reliability and Power Optimization
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NIST Certified Security
SmartMesh Networks Deliver:
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>99.999% Network Reliability Achieved in the
Most Challenging Dynamic RF Environments Often
Found in Industrial Applications
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Sub 50µA Routing Nodes
LTP5900-WHM FEATURES
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Industry-Leading Low Power Radio Technology with:
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4.5mA to Receive a Packet
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5.4mA to Transmit at 0dBm
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9.7mA to Transmit at 8dBm
RF Modular Certifications Include USA, Canada, and EU
24mm × 39mm, 22-Pin PCB Assembly with MMCX
Antenna Connector
TYPICAL APPLICATION
LTP5900-WHM
EXPANDED VIEW
MOTE
LTP5903-WHR
ANTENNA
IN+
SENSOR
LTC
®
2379-18 SPI
IN–
MOTE
MOTE
MOTE
5900WHM TA01
MANAGER
MOTE
µCONTROLLER
UART
UART
ETHERNET
HOST
APPLICATION
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1
LTP5900-WHM
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
PIN CONFIGURATION
TOP VIEW
ANTENNA
CONNECTOR
1
2
3
4
5
6
7
8
9
10
11
V
SS
V
DD
KEY (NO PIN)
RX
TX
RESERVED
MT_RTS
MT_CTS
SP_CTS
TIME
MODE PIN B
RST
SPI_CS
KEY (NO PIN)
MISO
MOSI
SCK
RESERVED
RESERVED
RESERVED
RESERVED
FLASH_P_EN
22
21
20
19
18
17
16
15
14
13
12
Supply Voltage (V
DD
to V
SS
) ................... –0.3V to 4.20V
Voltage on Any Digital I/O Pin . V
SS
– 0.3V to V
DD
+ 0.3V
Input RF Level, Input Power at Antenna Connector .........
10dBm
Storage Temperature Range .................. –55°C to 105°C
VSWR of Antenna ...................................................... 3:1
Operating Temperature Range .................–40°C to 85°C
PC PACKAGE
22-LEAD (39mm
×
24.4mm) PCB
ORDER INFORMATION
LEAD FREE FINISH†
LTP5900IPC-WHMA#PBF
PART MARKING
LTP5900IPC-WHMA#PBF
PACKAGE DESCRIPTION
22-Lead (39mm
×
24.4mm) PCB
TEMPERATURE RANGE
–40°C to 85°C
†This product ships with the flash erased at the time of order. OEMs will need to program devices during development and manufacturing.
For legacy part numbers and ordering information, go to:
http://www.linear.com/product/LTP5900-WHM#orderinfo
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
ELECTRICAL CHARACTERISTICS
PARAMETER
DC Specifications
Operational Supply Voltage Range
(Between V
DD
and V
SS
)
Voltage Supply Noise
Voltage Supervisor Trip Point
Supply Current, Peak
CONDITIONS
Specifications are at T
A
= 25°C, V
DD
= 3.6V unless otherwise noted.
MIN
2.75
TYP
MAX
3.76
250
1.5
4.5
12
9.7
12
5.4
UNITS
V
mV
P-P
V
mA
mA
mA
mA
mA
Including Noise and Load Regulation
50Hz to 2MHz
Reset Trip Point
Searching for Network, Typically 150ms on and 2850ms
in Doze (Note 2)
TX, 5ms Maximum
TX, 5ms Maximum, 85°C (Note 7)
TX, 5ms Maximum
Supply Current, Peak During Power on Reset Maximum 750uS + V
DD
Rise Time from 1V to 1.9V
Supply Current, Peak Power Amplifier
Enabled
Peak Current Power Amplifier Disabled
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LTP5900-WHM
ELECTRICAL CHARACTERISTICS
PARAMETER
Maximum Allowed Temperature Ramp
During Operation
Operating Relative humidity
Current Consumption
Supply Current, Transmit
Supply Current, Receive
Device Load
Total Capacitance
Total Inductance
V
DD
to V
SS
(Note 7)
V
DD
to V
SS
(Note 7)
6
4.9
µF
µH
Power Amplifier Enabled
Power Amplifier Disabled
9.7
5.4
4.5
mA
mA
mA
CONDITIONS
–40°C to 85°C
Non-Condensing
10
Specifications are at T
A
= 25°C, V
DD
= 3.6V unless otherwise noted.
MIN
TYP
MAX
8
90
UNITS
°C/min
% RH
Specifications are at –40°C to 85°C, V
DD
= 3.6V unless otherwise noted.
PARAMETER
Digital Signals
V
IL
(Low Level Input Voltage)
V
IH
(High Level Input Voltage)
V
OL
(Low Level Output Voltage)
V
OH
(High Level Output Voltage)
Input Leakage Current
Radio Specifications
Operating Frequency
Number of Channels
Channel Separation
Occupied Channel Bandwidth
Frequency Accuracy
Modulation
Raw Data Rate
Receiver Operating Maximum Input Level
Receiver Sensitivity
Output Power, Conducted
Power Amplifier Enabled
Power Amplifier Disabled
Range (Note 3)
Power Amplifier Enabled:
Indoor (Note 4)
Outdoor (Note 4)
Free space
Power Amplifier Disabled:
Indoor (Note 4)
Outdoor (Note 4)
Free space
At 50% PER, V
DD
= 3V, 25°C
At 1% PER, V
DD
= 3V, 25°C
V
DD
= 3.6V, 25°C
V
DD
= 3.6V, 25°C
25°C, 50% RH, 2dBi Omni-Directional Antenna, 2m above
ground
At –20dBc
(Note 7)
IEEE 802.15.4 DSSS
250
0
–95.0
–92.5
8
0
kbps
dBm
dBm
dBm
dBm
dBm
–40
(Note 7)
2.4000
15
5
2.7
40
MHz
MHz
ppm
2.4835
GHz
I
OL(MAX)
= 1.2mA
I
OH(MAX)
= −1.8mA
25°C
V
DD
– 0.3
50
–0.3
V
DD
– 0.3
0.6
V
DD
+ 0.3
0.4
V
V
V
V
nA
CONDITONS
MIN
TYP
MAX
UNITS
100
300
1200
25
200
350
meters
meters
meters
meters
meters
meters
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3
LTP5900-WHM
ANTENNA SPECIFICATIONS
PARAMETER
Frequency Range
Impedance
Maximum VSWR
Connector
VALUE
2.4GHz to 2.4835GHz
50Ω
3:1
MMCX (Note 5)
A MMCX-compatible male connector is provided on board for the antenna connection.
The antenna must meet the following specifications. For a list of FCC-approved antennae, see the FCC-Approved Antennae section.
When the mote is placed inside an enclosure, the antenna should be mounted such that the radiating portion of the antenna protrudes from the enclosure.
The antenna should be connected using a MMCX connector on a coaxial cable. For optimum performance, the antenna should be positioned vertically
when installed.
Note 1:
The absolute maximum ratings shown should not be violated
under any circumstances. Permanent damage to the device may be caused
by exceeding one or more of these parameters.
Note 2:
ESD (electrostatic discharge) sensitive device. ESD protection
devices are used extensively internal to the LTP5900. However, high
electrostatic discharge can damage or degrade the device. Use proper ESD
handling precautions.
Note 3:
The duration of doze time and “on” time is determined by the
joinDutyCycle command in the mote serial API. Refer to the SmartMesh
WirelessHART Mote Serial API Guide for details.
Note 4:
Actual RF range performance is subject to a number of
installation-specific variables including, but not restricted to ambient
temperature, relative humidity, presence of active interference sources,
line-of-sight obstacles, near-presence of objects (for example, trees, walls,
signage, and so on) that may induce multipath fading. As a result, actual
performance varies for each instance.
Note 5:
1 meter above ground.
Note 6:
The LTP5900-WHM can accommodate the following RF mating
connectors: MMCX straight connector such as Johnson 135-3402-001,
or equivalent; MMCX right angle connector such as Tyco 1408149-1, or
equivalent.
Note 7:
Guaranteed by design. Not production tested.
PIN FUNCTIONS
V
SS
(Pin 1):
Ground. I/O type = power.
V
DD
(Pin 2):
Power. I/O type = power.
KEY (Pins 3, 20):
No Pin.
RX (Pin 4):
UART RX. I/O type = 1. Direction = In.
TX (Pin 5):
UART TX. I/O type = 1. Direction = Out. Pin
state in Deep Sleep = V
DD
. Deep Sleep is the lowest pos-
sible power state, with V
DD
and GND connected. The mote
microprocessor and radio are inactive, and the mote must
be awakened using the
RST
signal (for more information
see the lowPowerSleep command in the WirelessHART
Mote Serial API Guide).
Reserved (Pins 6, 13, 14, 15, 16):
No Connection.
MT_RTS (Pin 7):
UART Active Low Mote Ready to Send.
I/O type = 1. Direction = Out. Pin state in Deep Sleep = V
DD
.
Deep Sleep is the lowest possible power state, with V
DD
and GND connected. The mote microprocessor and radio
are inactive, and the mote must be awakened using the
RST
signal (for more information see the lowPowerSleep
command in the WirelessHART Mote Serial API Guide).
MT_CTS (Pin 8):
UART Active Low External Processor
Clear to Send. I/O type = 1. Direction = Out. Pin state
in Deep Sleep = V
DD
. Deep Sleep is the lowest possible
power state, with V
DD
and GND connected. The mote mi-
croprocessor and radio are inactive, and the mote must
be awakened using the
RST
signal (for more information
see the lowPowerSleep command in the WirelessHART
Mote Serial API Guide).
SP_CTS (Pin 9):
UART Active Low Serial Peripheral Clear
to Send. I/O type = 1. Direction = In.
TIME
(Pin 10):
Falling Edge Time Request. I/O type = 1.
Direction = In. The
TIME
input pin is optional, and must
either be driven or pulled up with a 5.1M resistor. Unless
noted otherwise, all signals are active low.
MODE_PIN_B (Pin 11):
Selects Between Mode 1 and
Mode 3 Operation. I/O type = 1. Direction = In.
FLASH_P_EN (Pin 12):
Active Low Flash Power Enable.
I/O Type = 1. Direction = In.
SCK (Pin 17):
SPI Clock. I/O type = 1. Direction = In.
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For more information
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LTP5900-WHM
PIN FUNCTIONS
MOSI (Pin 18):
SPI Master Out Slave In Serial Data. I/O
type = 1. Direction = In.
MISO (Pin 19):
SPI Master In Slave Out Serial Data. I/O
type = 1. Direction = Out.
SPI_CS (Pin 21):
Active Low Flash Chip Select. I/O type
= 1. Direction = In.
RST
(Pin 22):
Active Low Reset. I/O type = 1. Direction
= In. The
RST
input pin is internally pulled up and con-
necting it is optional. When driven active low, the mote is
hardware reset until the signal is de-asserted. Refer to the
Power-On Sequence section for timing requirements on the
RST
pin. Note that the mote may also be reset using the
mote serial command (see the SmartMesh WirelessHART
Mote Serial API Guide).
BLOCK DIAGRAM
NETWORK SYNCHRONIZED REAL TIME CLOCK
CRYSTAL
OSCILLATORS
TEMPERATURE COMPENSATION
DRIFT COMPENSATION
WIRELESS
CHANNEL
MANAGEMENT
RF DESIGN
ENCRYPTION AND AUTHENTICATION
RSSI
POWER
AMPLIFIER
BALUN
ANTENNA
MATCHING
CIRCUITRY
ANTENNA
CONNECTOR
LTP5900-WHM
V
CC
GND
RST
MODE B
POWER MANAGEMENT
VOLTAGE SUPERVISOR
POWER SUPPLY INFO
JOIN DUTY CYCLE
BOOT CURRENT CONTROL
INTELLIGENT
NETWORKING
PLATFORM
CFG AND
MGMNT
SERIAL DATA
FLOW
CONTROL
NETWORK
DATA
TRANSMIT
QUEUE
RECEIVE
QUEUE
IEEE 802.15.4E MAC
UART
I/O
SERIAL
CRC
PACKET QUEUE
IEEE 802.15.4 PHY
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•
•
5900WHM BD
5900whmfa
For more information
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