dm2200-916 RF Monolithics, Inc., dm2200-916 Datasheet - Page 3

• Manufacturer Part Number: dm2200-916
• Description: 916.50 Mhz Transceiver Module
• Manufacturer: RF Monolithics, Inc.

DM2200-916VM FCC Certification
The DM2200-916VM is certified for operation under
FCC Part 15 Rules, Section 15.247. When the
DM2200-916VM is run from an off-board power supply
(applied to J1-4), the supply voltage must be limited to
a maximum of 3.7 Vdc, and the power supply voltage
ripple must not exceed 10 mV
FCC Labels and Notices
A clearly visible label is required on the outside of the
user’s (OEM) enclosure stating that this product con-
tains a DM2200-916VM radio module, FCC ID:
TE6-DM2200A.
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference re-
ceived, including interference that may cause unde-
sired operation.
WARNING: This device operates under Part 15 of
the FCC rules. Any modification to this device, not
expressly authorized by RFM, may void the user’s
authority to operate this device.
DM2200-916VM Applications
There are two ways to use the DM2200-916VM in an
application. The transceiver module can be used with
a companion application interface board, the IM2200.
The IM2200 has provisions for powering the trans-
ceiver module from a USB cable, an external unregu-
lated DC supply such as a 5 Vdc “wall” transformer, an
external regulated 3 Vdc power supply, or an external
battery. The IM2200 also provides the choice of
UART, RS232, or USB for a host computer serial in-
terface. In addition, the IM2200 includes cap-
tured-screw terminal strips for connecting analog
inputs, digital logic inputs, digital logic outputs and
form C relay outputs. Refer to the IM2200 data sheet
for additional details.
The DM2200-916VM can also be integrated into the
user’s own application board. The DM2200-916VM pin
descriptions are given in the Table on pages 4 and 5.
The transceiver module pin-out locations are show in
Figure 2, and the PCB layout for the mating connec-
tors is shown in Figure 3.
www.RFM.com E-mail: [e-mail]
©2008 by RF Monolithics, Inc.
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.
The operating range of the DM2200-916VM depends
critically on the antenna being located properly. When
using the standard DM2200-916VM antenna (part
number 400-1687-001), care should be taken to keep
the antenna at least 0.5 inch away from the sides of its
enclosure. The enclosure must be made from a plastic
with low RF attenuation, such as fiberglass, PVC or
ABS. Note: other antenna configurations are possible,
but each new antenna configuration must be added to
the DM2200-916VM FCC module certification before
deployment. Contact RFM for details.
The DM2200-916VM enclosure should be mounted so
the antenna is at least 4 feet off the ground, and ide-
ally 6 or more feet off the ground.
The DM2200-916VM has an on-board regulator input
on Pin J1-2. To use the on-board regulator, connect
J1-3 to J1-2 and apply a voltage to this connection of
at least 3.3 Vdc, but not greater than 14 Vdc, including
ripple variations. When running from the on-board reg-
ulator, up to 5 mA is available on J1-4 to operate ex-
ternal circuitry. Any external circuitry connected to
J1-4 must not induce more that 10 mV
regulated 3 Vdc at this pin.
The DM2200-916VM can also be run from an
off-board regulated supply or a battery. In this case,
connect J1-3 to ground, leave J1-2 unconnected, and
apply the regulated supply or battery input to J1-4.
Note the input voltage range for J1-4 must be in the
range of 2.9 to 3.7 Vdc, with no more than 10 mV
ripple.
Only pins J1-2 and J1-3 are rated to operate from a
supply voltage higher than 3.7 Vdc. Further, care must
be taken so that analog or logic inputs applied to the
transceiver module stay within the voltage range of 0
to VDD (voltage at J1-4). Applying a voltage outside of
the 0 to VDD voltage range to an analog or logic input
can damage the module.
The DM2200-916VM has current limiting protection re-
sistors on most of the I/O pins. These limit the current
that a logic output can source or sink. Any DM2200-
916VM pin defined as an output should be used only
to drive a high impedance load such as a CMOS logic
input or a MOSFET transistor.
DM2200-916VM - 4/18/08
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ripple on the
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