28987 Dresden Elektronik, 28987 Datasheet - Page 21
![DERFMEGA128-22C02](/photos/14/22/142242/mfg_28987_sml.jpg)
28987
Manufacturer Part Number
28987
Description
DERFMEGA128-22C02
Manufacturer
Dresden Elektronik
Series
deRFmega128r
Specifications of 28987
Frequency
2.4GHz
Data Rate - Maximum
2Mbps
Modulation Or Protocol
802.15.4
Applications
General Purpose
Power - Output
2.4dBm
Sensitivity
-101dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
18mA
Current - Transmitting
18mA
Data Interface
Solder Pads, 2 x 23
Memory Size
1Mb
Antenna Connector
U.FL
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
User Manual
Version 01.03
2010-09-07
11. RF components
11.1. deRFmega128-22A00 / 22C00
The chip antenna on the deRFmega128-22A00 / 22C00 is matched with:
Some hints for the positioning of the radio module:
Figure 17: Matching circuit with chip-antenna
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
01237 Dresden / Germany
L1 = 1,0nH (0402)
L2 = 2,2nH (0402)
avoid metallized environments in the near
place the module at the edge of a device
è mismatching of the antenna
è decreased transmit-range
Radio modules deRFmega128
Tel.: +49 351 – 31 85 00
Fax: +49 351 – 3 18 50 10
wireless@dresden-elektronik.de
www.dresden-elektronik.de
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