4432-SEB1 C 915 - Silicon Labs - Datasheet.Directory

LPF CP

Delta Sigma

Modulator

LNA

Mixers PGA

AGC Control

VCO

SPI, & Controller

Digital Logic

PFD

PWR_CTRL

RFn

PA_RAMP

PWR_CTRL

PA_RAMP

GPIO_2

GPIO_1

TXMOD

Xout

Xin

Digital Modem

Digital LDO

RC 32K OSC

30M XTAL

OSC

RF LDO

IF LDO

VCO LDO PLL LDO

BIAS

SDN

TXRXSW

ANTDIV

Low Power

Digital LDO

POR

Temp

Sensor

VR_DIG

GPIO_0

VDD_DIG

SDO

SDI

SCLK

VDD_DIG

VR_IF

LBD

nSEL

VDD_RF

8Bit

ADC

RFp ADC

Si4432/31/30

ISM Transceiver

Description

Silicon Laboratories’ Si4432/31/30 highly-integrated, single chip

wireless ISM tran sceiver 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

Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

Si4432/31/30

ISM Transceiver

Parameter Symbol Test Condition Min Typ Max Unit

Supply Voltage Range Vdd 1.8 3.0 3.6 V

Power Saving Modes

IShutdown RC Oscillator, Main Digital Regulator,

and Low Power Digital Regulator OFF —10 —nA

IStandby Register values retained, Main Digital

Regulator and RC Oscillator OFF —400 —nA

ISleep

RC Oscillator ON,

Regulator OFF —800 —nA

RX Mode Current IRX —18.5 —mA

TX Mode Current (Si4432) ITX_+20 txpow[2:0] = 011 (+20 dBm),

VDD = 3.3 V —80 —mA

ITX_+11 txpow[2:0] = 000 (+11 dBm),

VDD = 3.3 V —27 —mA

TX Mode Current (Si4430/31) ITX_+13 txpow[2:0] = 111 (+13 dBm),

VDD = 3.3 V —28 —mA

ITX_+1 txpow[2:0] = 100 (+1 dBm),

VDD = 3.3 V —16 —mA

Synthesizer Frequency Range

(Si4432/31) FSYNTH-LB Low Band 240 —480 MHz

FSYNTH-HB High Band 480 —930 MHz

Synthesizer Frequency Range

(Si4430) FSYNTH-HB High Band 900 —960 MHz

Synthesizer Frequency

Resolution FRES-LB Low Band —156.25 —Hz

FRES-HB High Band —312.5 —Hz

RX Sensitivity PRX_2

(BER < 0.1%)

(2 kbps, GFSK, BT = 0.5,

f = 5 kHz)2—–118 —dBm

RX Bandwidth BW 2.6 —620 kHz

Output Power Range (Si4432) PTX Power control by txpow[2:0] Register 11 —20 dBm

Output Power Range (Si4431/30) PTX Power control by txpow[2:0] Register –8 —13 dBm

TX RF Output Steps PRF_OUT Controlled by txpow[2:0] Register — 3 — dB

Operating Ambient Temperature

Range TA–40 85 °C

Selected Electrical Specifications

Pin Assignments

VDD_RF 1

6789

19 18 1720

RXp

RXn

SCLK

SDI

SDO

VDD_DIG

GPIO_0

GPIO_1

GPIO_2

XIN

XOUT

SDN

nIRQ

Metal

Paddle

511VR_IF NC

VDR nSEL

20-pin QFN Package Information