SI4313-B1-FM Silicon Laboratories Inc, SI4313-B1-FM Datasheet - Page 15

• Manufacturer Part Number: SI4313-B1-FM
• Description: IC RX FSK 315-915MHZ 20VQFN
• Manufacturer: Silicon Laboratories Inc
• Series: EZRadio®r
• Type: ISM Receiverr

Specifications of SI4313-B1-FM

• Package / Case: 20-VQFN
• Mfg Application Notes: Si4313 Register Desc AppNote
• Frequency: 315MHz, 434MHz, 868MHz, 915MHz
• Sensitivity: -118dBm
• Data Rate - Maximum: 128kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Applications: Data Logging, Health Monitors, Remote Control, Weather Station
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 1.8 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 315 MHz to 915 MHz
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Current: 100 nA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1980-5

2. Functional Description
The Si4313 is an ISM wireless single-ended receiver with continuous frequency coverage over the entire
240–960 MHz band. The wide operating voltage range of 1.8–3.6 V and low current consumption make the Si4313
an ideal solution for low-cost, battery-powered applications.
The Si4313 receiver uses a low IF architecture with a digital modem that performs the signal demodulation. The
demodulated signal is output to the system MCU through a programmable GPIO or via the standard SPI bus by
reading the 64-byte RX FIFO.
A local oscillator (LO) is generated by an integrated VCO and  Fractional-N PLL synthesizer. The synthesizer is
designed to support configurable data rates, output frequency, frequency deviation, and Gaussian filtering at any
frequency between 240–960 MHz.
The Si4313 is designed to work with a microcontroller, crystal, and a few passives to create a very low-cost system.
Voltage regulators are integrated on-chip, which allows for a wide range of operating supply voltage conditions
from +1.8 to +3.6 V. A standard 4-pin SPI bus is used to communicate with the microcontroller. Three configurable
general-purpose I/Os are also available. Minimal antenna matching is required allowing the use of a single ac
coupling capacitor which simplifies the system design and lowers the solution cost.
2.1. Application Example
supply voltage
100 pF
C 3
100 nF
C 4
150 pF
C 1
1 uF
C 5
Figure 1. Application Example
V D D
R X
N C
N C
N C
Rev. 1.0
1
3
2
4
5
30 M H z
S i4313
X 1
15
14
13
12
11
1 uF
C 6
S C LK
S D I
S D O
V D D _D
N C
G P 1
G P 2
G P 3
G P 4
G P 5
Si4313-B1
m icrocontroller
V D D
V S S
15