Si4430/31/32 RF Transceivers

Si4430/31/32 devices remain in production, but are not recommended for new designs. For new designs, please use Si4460/1/3/4 RF Transceivers instead.
The Si4430/31/32 ISM band transceiver ICs are members of the EZRadioPRO® product family. While retaining all the attractive features of the earlier products such as high integration, low cost, flexibility, low BOM and easy design-in, these transceivers target more sophisticated applications and offer several enhanced parameters and features including continuous frequency coverage from 240 - 960 MHz and output power up to +20 dBm.
The ISM band transceiver ICs include built-in features such as wake-up timer, low battery detector, transmit and receive data FIFOs, power-on reset circuit and general-purpose digital I/Os. The ICs incorporate a high-performance ADC and digital modem, which perform demodulation, filtering and packet handling in the digital domain, making the ICs ideal for configuration to mutiple applications. These features simplify the system design and allow the use of cost-effective microcontrollers.
 
 

Features

  • Fully integrated: low BOM, easy design-in, no production alignments
  • Wide range of operating conditions: supply voltage, temperature, frequency
  • Antenna diversity & TR switch control
  • Auto-frequency calibration (AFC)
  • Ultra low power sleep mode
  • Digital RSSI
  • On-chip crystal tuning
  • Green lead free package
  • Wake-on-radio
  • Configurable packet structure
  • Preamble quality detector
  • TX & RX 64 byte FIFOs
  • Low battery detector
  • Low power consumption
 
 

Applications

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Si4430/31/32 devices are not recommended for new designs. Please use Si4460/1/3/4 RF Transceivers instead.

Documentation

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Data Sheet (1)

DescriptionVersionUpdatedSize
Si4430/Si4431/Si4432 ISM Transceiver
1.112/14/20091822 kB

Data Short (1)

DescriptionVersionUpdatedSize
Si4432/31/30 Data Short
2.20.092/20/20091048 kB

Errata (4)

DescriptionVersionUpdatedSize
Si4430 Rev A0 Errata
06.29.097/6/200960 kB
Si4431 Rev A0 Errata
06.29.097/6/200960 kB
Si4432 Rev V2 Errata
0521096/1/2009136 kB
Si4x3x Rev B Errata
04.17.125/6/2010331 kB

User Guides (1)

DescriptionVersionUpdatedSize
WDS Chip Configurator User Guide
0.24/9/20103097 kB

Quick Start Guide (1)

DescriptionVersionUpdatedSize
Wireless M-Bus Quick Start Guide
0.12/16/2010161 kB

Application Notes (30)

DescriptionVersionUpdatedSize
AN379: Antenna Diversity with EZRadioPRO®
0.22/15/20101617 kB
AN414: EZRadioPRO® Layout Design Guide
0.211/30/20102409 kB
AN415: EZRadioPRO® Programming Guide
0.77/13/20101257 kB
AN417: Si4x3x Family and Crystal Oscillators
0.39/16/2014700 kB
AN427: EZRadioPRO™ Si433x & Si443x RX LNA matching
0.16/25/20091353 kB
AN429: Using the DC-DC Converter on the F9xx Series MCU for Single Battery Operation with the EZRadioPRO® RF Devices
0.18/5/2009112 kB
AN432: RX BER Measurement on EZRadioPRO with a Looped Bit Sequence
0.24/19/2010927 kB
AN435: Si4032/4432 PA Matching
0.22/11/20111021 kB
AN436: Si4030/4031/4430/4431 PA Matching
0.24/4/20112664 kB
AN437: Si4432 RF Performance and FCC Compliance Test Results
0.310/31/2012748 kB
AN439: EZRadioPRO RF Testing Quick-Start Guide
0.110/27/20091241 kB
AN440: Si4430/31/32 Register Descriptions
0.98/5/20151058 kB
AN445: Si4431 RF Performance and ETSI Compliance Test Results
0.34/12/20111769 kB
AN451: Wireless M-Bus Software Implementation
0.12/22/20101482 kB
AN452: Wireless M-Bus Stack Programmer's Guide
0.12/22/20101572 kB
AN457: Transitioning Si4432 from Rev V2 to Rev B
0.21/26/2010578 kB
AN458: Transitioning Si4430/31 from Rev A0 to Rev B
0.21/7/2011560 kB
AN459: Si4430-B Measurement Results
0.49/2/20102200 kB
AN463: Raw Data Mode with EZRadioPRO
0.212/13/20101992 kB
AN537: FIFO Mode, Direct Mode, and Packet Handler Operation for EZRadioPro
0.34/30/2013921 kB
AN548: Si4432 Compliance Test Results in Chinese AMR Band
0.15/20/2011624 kB
AN548: Si4432 Compliance Test Results in Chinese AMR Band (Simplified Chinese)
0.15/20/2011676 kB
AN585: EZRadioPro Low Duty Cycle Mode Operation
0.19/23/2011723 kB
AN592: Data Whitening Demo Code
0.111/30/2011567 kB
AN593: Temperature Sensor Usage and Frequency Calibration for the Si4x3x
0.13/24/2011667 kB
AN629: Si4460/61/63/64/67/68 RF ICs Layout Design Guide
0.32/20/20153461 kB
AN657: Radio Evaluation Demo for EZRadioPRO®
0.112/20/20114494 kB
AN658: Si446x and ARIB STD-T67 Compliance at 426-429 MHz
0.311/10/20141309 kB
AN799: Transitioning from the Si443x to the Si446x
0.212/4/2013680 kB
AN849: 434 MHz Single-Ended Antenna Matrix Selection Guide
1.19/5/20141212 kB

White Papers (2)

PCN (8)

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Si4430/31/32 devices are not recommended for new designs. Please use Si4460/1/3/4 RF Transceivers instead.

Design Resources

 
 

Si4432/31/30 Test Cards

Part Number Type Freq. Antenna Configuration Price (USD) Buy Download
4432-T-B1 A 915
Si4432
915 MHz Two (2) antennas mounted at 90°; used to evaluate the embedded Antenna Diversity algorithm
4432-T-B1 B 915
Si4432
915 MHz Separate TX and RX designed for lab testing (not recommended for range testing) $70 Si4432 TRX
4432-T-B1 C 915
Si4432
915 MHz Single antenna implemented with RF switch $65 Si4432 TRX
4432-T-B1 C 868
Si4432
868 MHz Single antenna implemented with RF switch
4432-T-B1 B 470
Si4432
470 MHz Separate TX and RX designed for lab testing (not recommended for range testing) $70 Si4432 TRX
4432-T-B1 C 470
Si4432
470 MHz Single antenna implemented with RF switch $65 Si4432 TRX
4432-T-B1 D 470
Si4432
470 MHz Single antenna implemented without RF switch
4431-T-B1 B 868
Si4431
868 MHz Separate TX and RX designed for lab testing (not recommended for range testing) $65 Si4431 TRX
4431-T-B1 D 868
Si4431
868 MHz Single antenna implemented without RF switch $60 Si4431 TRX
4431-T-B1 B 434
Si4431
434 MHz Separate TX and RX designed for lab testing (not recommended for range testing) $65 Si4431 TRX
4431-T-B1 D 434
Si4431
470 MHz Single antenna implemented without RF switch $60 Single Antenna 4431 TRX Test Card High Band
4430-T-B1 B 950
Si4430
950 MHz Separate TX and RX designed for lab testing (not recommended for range testing)
4430-T-B1 D 950
Si4430
950 MHz Single antenna implemented without RF switch $50 Si4430 TRX
 
 

Design Tools

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Software (21)

Schematics/Layout (20)

Example Code (2)

DescriptionVersionUpdatedSize
AN415_EZRadioPRO_Sample_Code
1.04/11/20111053 kB
AN463 Deglitch Reference Code
0.212/14/201028 kB
​​​
Si4430/31/32 devices are not recommended for new designs. Please use Si4460/1/3/4 RF Transceivers instead.
Product Matrix
Zoom
Part NumberDescriptionOutput Power Range (dBm)RX Current+11/+20 dBm TX Current+13 dBm TX CurrentPackage TypeFSK/GFSKOOKFrequency Range2/4.8 Sensitivity (dBm)Datasheet
Si4430
Buy
Sample
TRX-8 to +1318.5 mA—/—30 mAQFN20256 kbps40 kbps900 - 960 MHz-121/-110
Si4431
Buy
Sample
TRX-8 to +1318.5 mA—/—30 mAQFN20256 kbps40 kbps240 - 930 MHz-121/-110
Si4432
Buy
Sample
TRX+1 to +2018.5 mA35 mA/85 mAQFN20256 kbps40 kbps240 - 930 MHz-121/-110
    ​​The Si4432 has configurable output power from +11 to +20 dBm and is ideal for frequency hopping systems where maximum range is desired. The Si4430/31 ICs have configurable output power from -8 to +13 dBm. The Si4431 and Si4432 comply with FCC and ETSI requirements when used in any of the standard ISM Bands. A 30 MHz crystal and supply bypass capacitors are the only necessary external components, making the devices ideal for high-volume production in applications where size and cost are important.

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