Laird RM126 Series, Руководство пользователя

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Table 1: Recommended operating conditions
Parameter Symbol Min Typ Max Unit
USB Supply Input Voltage V
USB
- +5.0 - V
Supply Input Voltage (VMCU1 supplied externally) V
VMCU1
+3.3
1 V
Operating Temperature T
OP
- +20 -
˚C
1
The typical supply voltage to the RM126x is 3.3 V, but the maximum voltage is a function of temperature and average lifetime
current load. See the RM126x datasheet for more information.
The operating current of the board greatly depends on the application and the amount of external hardware connected. See
Table 2 for typical current consumptions for the RM126x and the on-board debugger. Note that the numbers are taken from
the data sheets for the devices. For a full overview, see the RM126x datasheet .
Table 2: Current consumption
Parameter Symbol Condition Typ Unit
Radio RX current
(RM1261 or
RM1262) I
RX_LORA
I
RX_FSK
RM1261 or RM1261 LoRa radio system current consumption
in Receive mode - RX Boosted, LoRa. Running radio test
firmware, EUART open. (VDD=3.3V, at 25
˚C).
8.1 mA
RM1261 or RM1261 FSK radio system current consumption
in Receive mode - RX Boosted, FSK 50kbps. Running radio
test firmware, EUART open. (VDD = 3.3V, at 25
˚C).
7.6 mA
Radio TX current
(RM1261) I
TX_LORA
RM1261 LoRa radio system current consumption in Transmit
mode @ 14dBm, 915MHz (VDD=3.0 V, at 25
˚C).
28.8 mA
Radio TX current
(RM1262) I
TX_LORA
RM1262 LoRa radio system current consumption in Transmit
mode @ 22dBm, 915MHz (VDD=3.0 V at 25
˚C). VDD=3.3V
minimum to achieve RF TX power 22dBm.
109 mA
On-board Debugger
Sleep Current
Consumption
2
I
DBG
On-board debugger current consumption when USB cable is
not inserted (EFM32GG12 EM4S mode current
consumption). 80 nA
1 From RM126x data sheet
2 From EFR32BG22 data sheet