User's Guide

RN2903
DS00000A-page 6 Advance Information  2015 Microchip Technology Inc.
2.0 GENERAL SPECIFICATIONS
Table 2-1 provides the general specifications for the module. Table 2-2 and Table 2-3 provide the module's electrical
characteristics and current consumption. Table 2-4 and Table 2-5 show the module's dimensions and the RF output
power calibration data.
TABLE 2-1: GENERAL SPECIFICATIONS
Specification Description
Frequency Band 902.000 MHz to 928.000 MHz
Modulation Method FSK, GFSK and LoRa™ Technology modulation
Maximum Over-the-Air Data Rate 300 kbps with FSK modulation; 12500 bps with LoRa Technology modulation
RF connection Board edge connection
Interface UART
Operation Range >15 km coverage at suburban; >5 km coverage at urban area
Sensitivity at 0.1% BER -148 dBm
(1)
RF TX Power Adjustable up to max. 20 dBm on 915 MHz band
(2)
Temperature (operating) -40°C to +85°C
Temperature (storage) -40°C to +115°C
Humidity 10% ~ 90%
non-condensing
Note 1: Depends on modulation. Expand Spreading Factor (SF).
2: TX power is adjustable. For more information, refer to the “RN2903 LoRa™ Technology Module Command
Reference User’s Guide” (DS40000000A).
TABLE 2-2: ELECTRICAL CHARACTERISTICS
Parameter Min. Typ. Max. Units
Supply Voltage 2.1 — 3.6 V
Voltage on any pin with respect to VSS (except VDD) -0.3 — VDD + 0.3 V
Voltage on VDD with respect to VSS -0.3 — 3.9 V
Input Clamp Current (IIK) (VI < 0 or VI > VDD) — — +/-20 mA
Output Camp Current (IOK) (VO < 0 or VO > VDD) — — +/-20 mA
GPIO sink/source current each — — 25/25 mA
Total GPIO sink/source current — — 200/185 mA
RAM Data Retention Voltage (in Sleep mode or Reset state) 1.5 — — V
VDD Start Voltage to ensure internal Power-on Reset signal — — 0.7 V
VDD Rise Rate to ensure internal Power-on Reset signal 0.05 — — V/ms
Brown-out Reset Voltage 1.75 1.9 2.05 V
Logic Input Low Voltage — — 0.15 x VDD V
Logic Input High Voltage 0.8 x VDD — — V
Input Leakage at <25°C
(VSS<VPIN<VDD, Pin at high-impedance)
—0.150nA
Input Leakage at +60°C
(VSS<VPIN<VDD, Pin at high-impedance)
—0.7100nA
Input Leakage at +85°C
(VSS<VPIN<VDD, Pin at high-impedance)
—4200nA
RF Input Level — — +10 dBm