SI4432 Datasheet, PDF (1/2 Pages) Silicon Laboratories – Silicon Laboratonies SI4432/31/30 highly-integrated, single chip wireless ISM transceiver is part of the EZRadioPRO

Si4432/31/30
ISM Transceiver
Description
Silicon Laboratories’ Si4432/31/30 highly-integrated, single chip
wireless ISM transceiver is part of the EZRadioPRO™ family. The
EZRadioPRO family includes a complete line of transmitters,
receivers, and transceivers allowing the RF system designer to
choose the optimal wireless part for their application.
The Si4432/31 offers advanced radio features, including
continuous frequency coverage from 240–930 MHz and
adjustable output power of up to +20 dBm with the Si4432. The
Si4430 offers frequency coverage from 900 to 960 MHz to support
the Japanese frequency bands. The Si4432/31/30’s high level of
integration offers reduced BOM cost while simplifying overall
system design. The extremely low receive sensitivity (–118 dBm)
coupled with the Si4432’s industry-leading +20 dBm output power
ensures extended range and improved link performance. Built-in
antenna diversity and support for frequency hopping can be used
to further extend range and enhance performance. Antenna
diversity is completely integrated into the Si443x and can improve
the system link budget by 8–10 dB, resulting in substantial range
increases under adverse environmental conditions.
Additional system features, such as an automatic wake-up timer,
low battery detector, 64 byte TX/RX FIFOs, automatic packet
handling, and preamble detection, reduce overall current
consumption and allow the use of lower-cost system MCUs. An
integrated temperature sensor, general-purpose ADC, power-on-
reset (POR), and GPIOs further reduce overall system cost and
size.
The Si4432/31/30 receiver uses a single-conversion architecture
to convert the 2-level FSK/GFSK/OOK modulated receive signal to
a low IF frequency. Following a programmable gain amplifier
(PGA) the signal is converted to the digital domain by a high-
performance delta-sigma ADC allowing filtering, demodulation,
slicing, error correction, and packet handling to be performed in
the built-in DSP, increasing the receiver’s performance and
flexibility versus analog based architectures.
The PA is single-ended to allow for easy antenna matching and
low BOM cost. The digital transmit modulation and automatic PA
power ramping ensure precise transmit modulation and reduced
spectral splatter, ensuring compliance with FCC and ETSI
regulations. The Si4430 is designed to ensure compliance with
ARIB regulations. The Si4432/31/30 is designed to work with an
MCU, 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.
Features
- Frequency Range = 240–930 MHz (Si4432/31)
900–960 MHz (Si4430)
- Sensitivity = –118 dBm
- FSK, GFSK, and OOK modulation
- Max Output Power = +20 dBm (Si4432)
+13 dBm (Si4431/30)
- Low Power Consumption
- 18.5 mA receive
- 27 mA @ +11 dBm transmit
- Data Rate = 1 to 128 kbps
- Power Supply = 1.8 to 3.6 V
- Ultra low power shutdown mode
- Wake-up timer
- Auto-frequency calibration (AFC)
- Antenna diversity and TR switch control
- Programmable packet handler
- TX and RX 64 byte FIFOs
- Low battery detector
- Temperature sensor and 8-bit ADC
- Frequency hopping capability
- On-chip crystal tuning
- 20-Pin QFN package
- Low BOM
Applications
- Remote control
- Home security and alarm
- Telemetry
- Toy control
- Remote meter reading
- Remote keyless entry
- Home automation
- Industrial control
- Sensor networks
- Health monitors
- Tag readers
VDD_RF
RF LDO
TX
PA
VCO LDO
VCO
ANTDIV
TXRXSW
PA_RAMP
PWR_CTRL
AGC Control
RFp
RFn
VR_IF
LNA
IF LDO
Mixers
BIAS
PGA
PLL LDO
LPF
CP
RC 32K OSC
PFD
30M XTAL
OSC
N
LBD
Temp
Sensor
8Bit
ADC
Delta Sigma
Modulator
TXMOD ^{Digital Logic}
SPI, & Controller
SCLK
SDI
SDO
VDD_DIG
Digital Modem
ADC
Low Power
Digital LDO
Digital LDO
POR
EZRadioPRO
Copyright © 2009 by Silicon Laboratories
2.20.09