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Low power modes

RF transceiver operational modes

Mode Operation Time spent Requests Effect
Sleep No operation (including incoming RF signal detection) is possible until TR wakes up. Majority of time 1 µA order of magnitude for battery life of years Important
Run TR is operating (either with or without RF circuitry sleeping) but no RX or TX is in progress Negligible Not critical Negligible
Receive (RX) TR is receiving or attempting to detect incoming RF packet Majority of non-sleeping time As low as possible Crucial
Transmit (TX) TR is transmitting an RF packet Very short periods As low as possible, but given mostly by RF output power Not critical

IQRF extra low power consumption

  • Sleep - hundreds of nanoAmpers
  • RX - as low as outstanding 15 µA in consumption optimized (XLP) mode. To optimize RX power for various needs, three RX/TX modes are available: STD (Standard), LP (Low Power) and XLP (Extra Low Power).
  • Even lower is receiving in LP combined with sub-µA precisely timed sleeping.

» TR-76D power consumption example

TR-76D power consumption measured by H TEST, an independent company specialized in advanced tests and precise measurements:

TR-76D consumption measured by H Test

Measuring equipment: Keysight N6705B DC power analyzer with N6785A source/measure unit for battery drain analysis.