20-101-1221 Rabbit Semiconductor, 20-101-1221 Datasheet - Page 108

• Manufacturer Part Number: 20-101-1221
• Description: RCM4400W (JAPAN TELEC CERTIFIED)
• Manufacturer: Rabbit Semiconductor
• Series: RabbitCore®r

Specifications of 20-101-1221

• Frequency: 2.4GHz
• Modulation Or Protocol: 802.11 b
• Power - Output: 16dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 450mA
• Current - Transmitting: 450mA
• Data Interface: Connector, 2 x 25 Header
• Memory Size: 512K Flash, 1MB SRAM
• Antenna Connector: SMA
• Operating Temperature: -20°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Sensitivity: -
• Data Rate - Maximum: -
• Other names: 316-1147

Table B-1 lists the electrical, mechanical, and environmental specifications for the Proto-
typing Board.
B.3 Power Supply
The RCM4400W requires a regulated 3.0 V – 3.6 V DC power source to operate. Depend-
ing on the amount of current required by the application, different regulators can be used
to supply this voltage.
The Prototyping Board has an onboard +5 V switching power regulator from which a
+3.3 V linear regulator draws its supply. Thus both +5 V and +3.3 V are available on the
Prototyping Board.
The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2
as shown in Figure B-3.
102
Board Size
Operating Temperature
Humidity
Input Voltage
Maximum Current Draw
(including user-added circuits)
Prototyping Area
Connectors
TIP: When you lay out your own power-supply circuit, place the switching voltage regu-
lator as far away from the RCM4400W as possible to minimize RF noise, and use low-
noise components such as a toroid coil.
Parameter
Table B-1. Prototyping Board Specifications
Figure B-3. Prototyping Board Power Supply
3.80" × 3.80" × 0.48" (97 mm × 97 mm × 12 mm)
0°C to +70°C
5% to 95%, noncondensing
8 V to 24 V DC
800 mA max. for +3.3 V supply,
1 A total +3.3 V and +5 V combined
1.3" × 2.0" (33 mm × 50 mm) throughhole, 0.1" spacing,
additional space for SMT components
One 2 × 25 header socket, 1.27 mm pitch, to accept RCM4400W
One 1 × 3 IDC header for power-supply connection
One 2 × 5 IDC RS-232 header, 0.1" pitch
Two unstuffed header locations for analog and RCM4400W
signals
25 unstuffed 2-pin header locations for optional configurations
Specification
RabbitCore RCM4400W