Murata Electronics North America DNT900 Manual Do Utilizador
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©2008 by RF Monolithics, Inc.
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DNT900 - 11/05/08
3.1 DNT900 Specifications
Characteristic
Sym
Minimum
Typical
Maximum
Units
Operating Frequency Range
902.75
927.25
MHz
Number of Hopping Patterns
32
Hop Dwell Time
5
200
ms
Number of RF Channels
50
Modulation
FSK
RF Data Transmission Rates
38.4, 115.2, 200 and 500
kb/s
Receiver Sensitivity
10
-5
BER @ 38.4 kb/s
-108
dBm
10
-5
BER @ 500 kb/s
-94
dBm
Transmitter RF Output Power Levels
1, 10, 100, 250, 500, 1000 at 38.4 to 200 kb/s
1, 10, 85 at 500 kb/s
mW
Optimum Antenna Impedance
50
Ω
RF Connection
DNT900P - U.FL Connector
DNT900C U.FL Connector or PCB Pad
Network Topologies
Point-to-Point, Point-to-Multipoint
Access Schemes
TDMA and CSMA
Number of Network Nodes
TDMA
16
CSMA
1024
ADC Input Range
0
3.3
V
ADC Input Resolution
10
bits
Signal Source Impedance for ADC Reading
10
KΩ
PWM (DAC) Output Range
0
3.3
V
PWM (DAC) Output Resolution
7
bits
PWM Output Period
20
µs
Primary Serial Port Baud Rates
1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 115.2, 230.4, 460.8 kb/s
Diagnostic Serial Port Baud Rates
115.2
kb/s
Digital I/O:
Logic Low Input Level
-0.5
0.8
V
Logic High Input Level
2
3.3
V
Logic Input Internal Pull-up Resistor
50
200
KΩ
Logic Input Internal Pull-down Resistor
50
180
KΩ
Power Supply Voltage Range
V
CC
+3.3
+5.5
Vdc
Power Supply Voltage Ripple
10
mV
P-P
Peak Transmit Mode Current
900
mA
Average Operating Current:
Base
105
mA
Remote, No Data Transmission
35
mA
Remote, 9.6 kb/s Continuous
Data Stream
Data Stream
40
mA
Remote, 115.2 kb/s Continuous
Data Stream
Data Stream
53
mA
Sleep Current
50
µA
Operating Temperature Range
-40
85
o
C
Operating Relative Humidity Range
10
90
%
Table 3.1.1