SI4330-B1-FMR Silicon Laboratories Inc, SI4330-B1-FMR Datasheet - Page 18

• Manufacturer Part Number: SI4330-B1-FMR
• Description: IC RX ISM 240-960MHZ 20VQFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4330-B1-FMR

• Frequency: 240MHz ~ 960MHz
• Sensitivity: -121dBm
• Data Rate - Maximum: 256 kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Applications: Remote Control, RKE, Security Systems
• Current - Receiving: 18.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

Si4330-B1
3.2. Operating Mode Control
There are three primary states in the Si4330 radio state machine: SHUTDOWN, IDLE, and RX (see Figure 6). The
SHUTDOWN state completely shuts down the radio to minimize current consumption. There are five different
configurations/options for the IDLE state which can be selected to optimize the chip to the applications needs.
"Register 07h. Operating Mode and Function Control 1" controls which operating mode/state is selected with the
exception of SHUTDOWN which is controlled by SDN pin 20. The RX state may be reached automatically from any
of the IDLE states by setting the rxon bit in "Register 07h. Operating Mode and Function Control 1". Table 10
shows each of the operating modes with the time required to reach RX mode as well as the current consumption of
each mode.
The Si4330 includes a low-power digital regulated supply (LPLDO) which is internally connected in parallel to the
output of the main digital regulator (and is available externally at the VR_DIG pin). This common digital supply
voltage is connected to all digital circuit blocks including the digital modem, crystal oscillator, SPI, and register
space. The LPLDO has extremely low quiescent current consumption but limited current supply capability; it is
used only in the IDLE-STANDBY and IDLE-SLEEP modes. The main digital regulator is automatically enabled in
all other modes.
18
Shut Down State
Idle States:
RX State
Standby Mode
Sleep Mode
Sensor Mode
Ready Mode
Tune Mode
State/Mode
SHUT DWN
SHUTDOWN
Table 10. Operating Modes Response Time
Figure 6. State Machine Diagram
Response Time to RX Current in State /Mode [µA]
*Five Different Options for IDLE
16.8 ms
800 µs
800 µs
800 µs
200 µs
200 µs
NA
Rev 1.0
IDLE*
18.5 mA
450 nA
800 µA
8.5 mA
15 nA
1 µA
1 µA
RX