RN-174 Roving Networks Inc, RN-174 Datasheet - Page 6

• Manufacturer Part Number: RN-174
• Description: RF EVAL GSX SUPER MODULE
• Manufacturer: Roving Networks Inc
• Type: Transceiver, 802.11 b/gr

Specifications of RN-174

• Frequency: 2.402GHz ~ 2.48GHz
• Wireless Frequency: 2402 MHz to 2480 MHz
• Interface Type: RS-232, SPI, UART
• Modulation: DSSS, OFDM
• Security: 128 bit WEP, AES, TKIP
• Operating Voltage: 3.3 V
• Output Power: 12 dBm
• Operating Temperature Range: - 40 C to + 85 C
• Board Size: 1950 mm x 1105 mm
• Antenna: Supports Chip, PCB Trace, Wire, U.FL Connector for External
• For Use With/related Products: RN-171
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 740-1040

Design Concerns
1. Powering the module. The RN-174 can be powered from the RS232 header, the UART interface or the power
2. Configuring the module for low current consumption: The RN-171 module draws only 4uA when it is in sleep
3. Sensor Interfaces. Inputs must not exceed 1.2V. ADC saturates at 400 mV. It is recommended that you use
connector. You should only provide power on one of the three power connectors
If powered from the RS232 header (J3), apply 4 to 16 VDC on pin 9 and ground to pin 5 of the RS232 header.
If powered from the UART header (J8), apply 3.3 VDC on pin 1 and ground on pin 2 of the UART interface.
If powered from the power connector, apply 4 to 16 VDC depending upon the jumper configuration of the power
select jumpers (J4).
Low Voltage Mode
Low Voltage Mode (Battery Boost Enabled): When the RN-174 is configured in Low voltage mode, it MUST be
powered by 2.0V DC to 3.3V DC ONLY on the power connector (J7) or on the RS232 header (J3). In low power
mode the battery boost circuit in enabled which allows the input voltage to drop down to 2.0V DC.
NOTE: Applying any voltage greater than 3.7V DC when the board is configured in Low voltage mode will
permanently damage the RN-171 module on the board causing it to malfunction.
High Voltage Mode (Battery Boost Disabled): This is the default mode in which the RN-174 is shipped. When
the RN-174 is configured in High voltage mode (4-16V DC), power must be applied on the power connector (J7)
or on the RS232 header (J3). In this mode, the battery boost circuit is disabled.
External Power Mode: This mode is used when powering the module from a regulated 3.3V power supply to the
UART header (J8) or if using the RN-G2ISP to power the module. In this mode, the module cannot be powered
from the RS232 header (J8) or the Power connector (J7).
state. To achieve this low current consumption:
NOTE: If the RS232 chip is installed, the current consumption will be around 88uA when the 10-pin serial cable is
disconnected and 160uA when the cable is connected to the RS232 device.
the Sensor power output to drive any analog devices that are attached to the sensor pins.
Note the exception to this is Sensor pins 2 and 3. These have a resistor network in front of sensors 4 and 5
respectfully so they can be drive with up to 5 VDC.
www.rovingnetworks.com


809 University Avenue
GPIO 4, 5, 6 7 and 8 must be pulled to ground using the Pull Up/Down jumper (J2)
Remove the RS232 chip from the board or pull RTS and CTS to GND on the UART header (J8) (optional)
•
Los Gatos, CA 95032
High Voltage Mode
~ page 6 ~
•
Tel [phone]
External Power Mode
• [e-mail]
rn-174-ds v1.1 6/1/2011
RN-174