DNT500
2008 by RF Monolithics,
Inc.
15
M-0500-0000 Rev D
3.1 Specifications
The DNT500 specifications are listed in the table below:
Characteristic
Sym Notes
Minimum
Typical
Maximum
Units
Operating Frequency Range
902.75
927.25
MHz
FCC 15.247 FHSS
1
38.4, 115.2 and 200 kb/s, up to 28 dBm
FCC 15.247 Digital Modulation (DSS)
1
500 kb/s, up to 19 dBm
Number of Hopping Patterns
32
Hop Dwell Time
5
200
ms
Number of RF Channels
50
RF Data Transmission Rates
1
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
0, 10, 19, 24, 27, 28
dBm
Optimum Antenna Impedance
50
Ω
RF Connection
U.FL Connector or PCB Pad
Network Topologies
Point-to-Point, Point-to-Multipoint, Mesh
Access Schemes
TDMA and CSMA
Number of Network Nodes
TDMA
15
CSMA
1024
ADC Input Range
0
3.3
V
ADC Input Resolution
10
bits
Signal Source Impedance for ADC Reading
10
K
Ω
PWM (DAC) Output Range
0
3.3 V
PWM (DAC) Output Resolution
8
bits
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
38.4, 115.2, 230.4, 460.8
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
K
Ω
Logic Input Internal Pull-down Resistor
50
180
K
Ω
Power Supply Voltage Range
V
CC
+3.3
+5.5
Vdc
Power Supply Voltage Ripple
10 mV
P-P
Receive Mode Current
50
mA
Transmit Mode Current
900 mA
DTR High Sleep Current
0.5 mA
Operating Temperature Range
-40
85
o
C
Operating Relative Humidity Range
10
90
%
1. RF output power is interlocked in firmware to a maximum of 19 dBm at the 500 kb/s RF data rate to assure compliance
with regulatory requirements.