28987 Dresden Elektronik, 28987 Datasheet - Page 25

• 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
12.3. Approved antennas
The deRFmega128-22A00 and deRFmega128-22C00 have an integrated chip antenna. The
design is fully compliant with all regulations.
The deRFmega128-22A02 and deRFmega128-22C02 have been tested and approved for
use with the antenna listed below. The module may be integrated with other custom design
antennas which OEM installer must authorize with respective regulatory agencies. The used
antenna was connected to the radio module with a 10cm “U.FL-to-SMA-Reverse pigtail”.
Table 9: Approved antenna(s) and accessory
Approved antenna(s) and accessory
Part
number
BN-023768
BN-023769
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
01237 Dresden / Germany
Description
Dual-band antenna (2.45GHz
and 5.8GHz) with Reverse-
SMA-Connector, ¼ wave
10 cm
U.FL-to-SMA-Reverse pigtail,
Radio modules deRFmega128
Tel.: +49 351 – 31 85 00
Fax: +49 351 – 3 18 50 10
[e-mail]
www.dresden-elektronik.de
Manufacturer
Antenna Factor
Hirose /
Profineon
Gain
[dBi]
+4,7
-0,37
Min. Separation
[cm]
20
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