ZFSM-101-2 CEL, ZFSM-101-2 Datasheet - Page 6

• Manufacturer Part Number: ZFSM-101-2
• Description: Zigbee / 802.15.4 Modules 2.4GHz 100mW 3.3Volt Freescale MC13202
• Manufacturer: CEL

Specifications of ZFSM-101-2

• Rohs: yes
• Frequency Band: 2.4 GHz
• Line Of Sight Range: 4000 ft
• Data Rate: 250 kbps
• Sensitivity: - 91 dBm
• Operating Supply Voltage: 2.8 V to 3.6 V
• Supply Current Transmitting: 165 mA
• Supply Current Receiving: 50 mA
• Output Power: 20 dBm
• Antenna Connector Type: PCB
• Maximum Operating Temperature: + 85 C
• Dimensions: 36 mm x 25 mm
• Interface Type: UART
• Minimum Operating Temperature: - 40 C

ANTENNA
FreeStar modules include an integrated PCB trace antenna. The PCB antenna employs an F-Antenna topology that is com-
pact and supports an omni-directional radiation pattern. To maximize antenna efficiency, an adequate ground plane must be
provided on the host PCB.
The following will significantly contribute to antenna performance:
• The position of the module on the host board
• The position of the ground plane on the host board under the module
• Overall design of product enclosure
Poor design affects radiation patterns and can result in reflection, diffraction and/or scattering of the transmitted signal.
Here are some design guidelines to help ensure antenna performance:
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage
RF Input Power
Storage Temperature Range
Power Supply Voltage (Vdd)
Input Frequency
Ambient Temperature Range
Logic Input Low Voltage
Logic Input High Voltage
• Never place the ground plane or route copper traces directly underneath the antenna portion of the module
• Never place the antenna close to metallic objects
• In the overall design, ensure that wiring and other components are not placed near the antenna
• Do not place the antenna in a metallic or metallized plastic enclosure
• Keep plastic enclosures 1cm or more from the antenna in any direction
Characteristic
Rating
-55 to 125
70% Vdd
Value
2405
Min
+10
2.8
-40
3.6
0
Typ
3.3
25
dBm
Unit
Vdc
ºC
30% Vdd
2480
Max
Vdd
3.6
85
MHz
Unit
Vdc
ºC
V
V
FreeStar ZFSM-101-2
Page 6