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PDF DWM1000 Data sheet ( Hoja de datos )
| Número de pieza | DWM1000 | |
| Descripción | IEEE 802.15.4-2011 UWB Transceiver Module | |
| Fabricantes | Decawave | |
| Logotipo |  |
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Product Overview
The DWM1000 module is based on Decawave's DW1000 Ultra
Wideband (UWB) transceiver IC. It integrates antenna, all RF
circuitry, power management and clock circuitry in one module.
It can be used in 2-way ranging or TDOA location systems to
locate assets to a precision of 10 cm and supports data rates of
up to 6.8 Mbps
Key Features
IEEE 802.15.4-2011 UWB
compliant
Supports 4 RF bands from
3.5 GHz to 6.5 GHz
Programmable transmitter
output power
Fully coherent receiver for
maximum range and accuracy
Designed to comply with FCC
& ETSI UWB spectral masks
Supply voltage 2.8 V to 3.6 V
Low power consumption
Data rates of 110 kbps,
850 kbps, 6.8 Mbps
Maximum packet length of
1023 bytes for high data
throughput applications
Integrated MAC support
features
Supports 2-way ranging and
TDOA
SPI interface to host processor
23 mm x 13 mm x 2.9 mm 24-
pin side castellation package
Key Benefits
• Simplifies integration, no RF design
required
• Very precise location of tagged objects
delivers enterprise efficiency gains and
cost reductions
Extended communications range
minimises required infrastructure in
RTLS
High multipath fading immunity
Supports very high tag densities in
RTLS
Low cost allows cost-effective
implementation of solutions
Low power consumption reduces the
need to replace batteries and lowers
system lifetime costs
Applications
Precision real time location systems
(RTLS) using two-way ranging or
TDOA schemes in a variety of
markets.
Location aware wireless sensor
networks (WSNs)
On-board
Antenna
ANALOG RECEIVER
POWER MANAGEMENT
On-board
Power
Management
DC/DC
PLL / CLOCK GENERATOR
HOST INTERFACE / SPI
ANALOG TRANSMITTER
DW1000 IC
DWM1000
STATE CONTROLLER
High Level Block Diagram
SPI I/F
On-board
Crystal and
Clock
Management
2.8 V to
3.6 V DC
supply
SPI Control
Interface
1 page  
DWM1000 Datasheet
1 OVERVIEW
The DWM1000 module is an IEEE 802.15.4-2011 UWB implementation. RF components, Decawave DW1000
UWB transceiver, and other components reside on-module. DWM1000 enables cost effective and reduced
complexity integration of UWB communications and ranging features, greatly accelerating design implementation.
1.1 DWM1000 Functional Description
The DW1000 on board the DWM1000 is a fully integrated low-power, single chip CMOS RF transceiver IC
compliant with the IEEE 802.15.4-2011 [1] UWB standard. The DWM1000 module requires no RF design as the
antenna and associated analog and RF components are on the module.
The module contains an on-board 38.4 MHz reference crystal. The crystal has been trimmed in production to
reduce the initial frequency error to approximately 2 ppm, using the DW1000 IC’s internal on-chip crystal trimming
circuit, see section 2.1.1.
Always-On (AON) memory can be used to retain DWM1000 configuration data during the lowest power operational
states when the on-chip voltage regulators are disabled. This data is uploaded and downloaded automatically. Use
of DWM1000 AON memory is configurable.
The on-chip voltage and temperature monitors allow the host to read the voltage on the VDDAON pin and the
internal die temperature information from the DW1000.
See the DW1000 Datasheet [2] for more detailed information on device functionality, electrical specifications and
typical performance.
1.2 DWM1000 Power Up
3.3 V Supplies
(VDDAON / VDD / VDD)
EXTON
RSTn
STATE
Von
OF F
Text_on
Tdig_on
POWER UP
INIT
Figure 1: DWM1000 Power-up Sequence
When power is applied to the DWM1000, RSTn is driven low by internal circuitry as part of its power up
sequence. See Figure 1 above. RSTn remains low until the on-module crystal oscillator has powered up and its
output is suitable for use by the rest of the device, at which time RSTn is deasserted high.
Table 1: DW1000 Power-up Timings
Parameter
VON
TEXT_ON
TDIG_ON
Description
Voltage threshold to enable power up
Time at which EXTON goes high before RSTn is
released
RSTn held low by internal reset circuit / driven low by
external reset circuit
Nominal
Value
2.0
3
3
Units
V
ms
ms
RSTn may be used as an output to reset external circuitry as part of system bring-up as power is applied.
An external circuit can reset the DWM1000 by asserting RSTn for a minimum of 10 ns. RSTn is an
asynchronous input. DW1000 initialization will proceed when the pin is released to high impedance. RSTn
should never be driven high by an external source.
Please see DW1000 Datasheet [2] for more details of DW1000 power up.
© Decawave Ltd 2015
Subject to change without notice
Version 1.3
Page 5
5 Page 
DWM1000 Datasheet
Table 4: Explanation of Abbreviations
ABBREVIATION
EXPLANATION
I Input
IO Input / Output
O Output
G Ground
P Power Supply
PD Power Decoupling
O-L Defaults to output, low level after reset
O-H Defaults to output, high level after reset
I Defaults to input.
Note: Any signal with the suffix ‘n’ indicates an active low signal.
© Decawave Ltd 2015
Subject to change without notice
Version 1.3
Page 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet DWM1000.PDF ] | |
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