SI4438 Datasheet, PDF (4/44 Pages) Silicon Laboratories – Low active power consumption

Si4438
1. Electrical Specifications
Table 1. DC Characteristics^*
Parameter
Symbol
Test Condition
Min Typ Max Unit
Supply Voltage
V_DD
Range
1.8 3.3 3.6 V
Power Saving Modes I_Shutdown
RC Oscillator, Main Digital Regulator,
and Low Power Digital Regulator OFF
— 30 — nA
I_Standby
Register values maintained and RC
oscillator/WUT OFF
— 50 — nA
I_SleepRC RC Oscillator/WUT ON and all register values main- — 900 — nA
tained, and all other blocks OFF
I_SleepXO
Sleep current using an external 32 kHz crystal.
— 1.7 — µA
I_{Sensor Low battery detector ON, register values maintained,} — 1 — µA
-LBD
and all other blocks OFF
I_Ready
Crystal Oscillator and Main Digital Regulator ON,
all other blocks OFF
— 1.8 — mA
TUNE Mode Current
RX Mode Current
TX Mode Current
(Si4438)
I_{Tune_RX}
I_{Tune_TX}
I_RXH
I_{TX_+20}
RX Tune
TX Tune
+20 dBm output power, class-E match, 490 MHz,
3.3 V
— 7.2 — mA
— 8 — mA
— 14 — mA
— 75 — mA
*Note: All minimum and maximum values are guaranteed by production test unless otherwise stated. All typical values apply at
VDD = 3.3 V and 25 °C unless otherwise stated.
4
Rev 1.0