Silicon Laboratories Si4432 Manual

Si4432 ISM T
Features
Frequency Range = 240–930 MHz

Sensitivity = –118 dBm

+20 dBm Max Output Power

Configurable +11 to +20 dBm

Low Power Consumption

18.5 mA receive

27 mA @ +11 dBm

Data Rate = 1 to 128 kbps

Power Supply = 1.8 to 3.6 V

Ultra low power shutdown mode

Digital RSSI

Wake-on-radio

Auto-frequency calibration (AFC)

Applications
Remote control

Home security & alarm

Telemetry

Personal data logging

Toy control

Tire Pressure monitoring

Wireless PC peripherals

Description
Silicon Laboratories' Si4432 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 offers advanced radio features including continuous frequency
coverage from 240–930 MHz and adjustable output power of up to +20 dBm. The
Si4432's high level of integration offers reduced BOM cost while simplifying the
overall system design. The extremely low receive sensitivity (–118 dBm) coupled
with 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.
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's digital receive architecture features a high-performance ADC and
DSP based modem which performs demodulation, filtering, and packet handling
for increased performance. This digital architecture simplifies system design while
allowing for the use of lower-end MCUs. The direct digital transmit modulation and
automatic PA power ramping ensure precise transmit modulation and reduced
spectral spreading ensuring compliance with FCC and ETSI regulations.
Preliminary Rev. 0.2 10/08
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
R A N S C E I V E R
Antenna diversity & TR switch control

Configurable packet structure

Preamble detector

TX & RX 64 byte FIFOs

Low battery detector

Temperature sensor and 8-bit ADC

–40 to +85 °C temperature range

Integrated voltage regulators

Frequency hopping capability

On-chip crystal tuning

20-Pin QFN package

FSK, GFSK, and OOK modulation

Low BOM

Power-on-reset (POR)

Remote meter reading

Remote keyless entry

Home automation

Industrial control

Sensor networks

Health monitors

Tag readers

Copyright © 2008 by Silicon Laboratories
Si4432
Ordering Information:
See page 162.
Pin Assignments
Si4432
20 19 18 17 16
VDD_RF 1
TX 2
RXp 3
RXn 4
VR_IF 5
6 7 8 9 10
Metal
Paddle
Patents pending
15 SCLK
14 SDI
13 SDO
12 VDD_DIG
11 GND_DIG
Si4432