SA326 G-NICE | Alldatasheet
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www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 1 - sales@nicerf.com SA326 High Fidelity Wireless Audio Module
- Smallsize,Easytooperate,Worksuponpoweringup
- Wirelesshigh-fidelityaudio,upto48kHzsampling
- Lowlatency,49msfrommicinputtooutput
- 32-bitencrypteddatatransmission Product Specification
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 2 - sales@nicerf.com Catalogue Note: Revision History Revision Date Comment V1.0 2021-7 Firstrelease V1.1 2022-4 Addproductconfigurationinstructions V1.2 2022-8 Modifytheproductconfigurationdiagram,moduleinterfacedescription diagramandcoverimage V1.3 2024-4 AddSA326F30-TXparameters V1.4 2024-11 Updateconfigurationinstructions,addpowercomparisontable V1.5 2025-07 UpdateModuleinterfacedescription V1.6 2025-8 UpdatePin,Mechanicalsize,Internalblockdiagram V1.7 2026-3 Updatedelaytime
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 3 - sales@nicerf.com 1. Overview The SA326 series products are divided into transmitter modules SA326-TX, SA326F30-TX, and receiver module SA326-RX.This product is an application board for the SA316-TX, SA316F30-TX, and SA316-RX modules. It can operate immediately after power-on and be directly set the module’s frequency, volume, and other parameters using PC software, greatly simplifying the development processforusers.Thisproductiswidelyusedinapplicationsthatrequirehighsoundquality. 2. Features UHFfrequencyband：500MHz/868/915MHz UHFfrequencyband：500~980MHz VHFfrequencyband：160~270MHz SA326F30-TXTransmission Distance:1500metersintheopenarea SA326S-TXTransmissionDistance: 200metersintheopenarea Receivingsensitivity:-96dBm Audiosignaltonoiseratio:86dB Frequencyresponse:30Hz-20KHz Thedelayfrommicrophoneinputtoaudio outputis49ms Digitalmodulationmethod:pi/4DQPSK Occupiedbandwidth:<300KHz Transmissionrate204.8Ksps Samplingrate:48KHz 3. Applications Wiredspeakersbecomewirelessspeakers wirelessmicrophone WirelessHeadphones High-qualitywirelessaudiotransmission 4. Internal block diagram SA326-TXblockdiagram
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 4 - sales@nicerf.com SA326F30-TXblockdiagram 1.WhenpoweredbyexternalUSB,thefrequencyadjustmentof8421encoderisuseless Whenaplugisinsertedintothe3.5mmjack,theonboardmicrophoneisdisabled SA326-RXblockdiagram
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 5 - sales@nicerf.com 5. Electrical Characteristics Parameter Test Conditions Min. Typ. Max. Unit Operatingvoltagerange 3.3 4.2 5 V Rangeofworkingtemperature -20 25 60 ℃ Operatingfrequencyrange @UHF 500 980 MHz @VHF 160 270 MHz Audiotransmissionandreception delay 49 ms Serialportbaudrate 9600 bps Current consumption Sleepcurrent（SA326-RX) <45 uA Sleepcurrent（SA326F30-TX) <20 uA Receivecurrent（SA326-RX) @VCC=4.2V <140 mA TransmitCurrent（SA326-TX） @NotTransmitting <75 mA @During Transmission <120 mA Emissioncurrent（SA326F30-TX） @Not Transmitting,5v <75 mA @During Transmission,5v 30dBm <700 mA Transmit parameter Transmitpower @VCC=4.2V 9 10 11 dBm @VCC=5.0V 29 30 31 dBm transmitpowerrange @VCC=4.2V 0 10 dBm @VCC=5.0V 20 30 dBm Emissionbandwidth（BW) 300 KHz Adjacentchannelpowerratio（ACPR） @600KHZ -60 dBc Maximummicrophoneinputvoltage 0.3 1.5 Vrms Audiofrequencyresponserange 30 20k Hz Receive parameters Receivingsensitivity -96 dBm Audiooutputamplitude(differential) 400 mVrms Audiooutputdriveresistance 600 Ohm LOUT+,ROUT+DrivingResistor 16-32 Ohm SPKP,SPKNDrivingResistor 4-8 Ohm SignaltoNoiseRatio(SNR) @1KHz， 86 dB Totalharmonicdistortion(THD) @48KSampling Rate 0.07 %
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 6 - sales@nicerf.com 6. Product configuration description 1）Version：FirmwareVersionofmodule1.2 2）Channel：1-16channelcanbechose Configuring the channels of the SA326 requires an external power supply; switching channels hasnoeffectwhenpoweredviaUSB. Each frequency band is divided into 16 channels, with a difference of 1MHz between adjacent channels.Thespecificcorrespondingfrequenciesareshowninthetablebelow： frequencyband channel 1 2 3 4 5 6 7 8 500-515 frequency 500 501 502 503 504 505 506 507 channel 9 10 11 12 13 14 15 16 frequency 508 509 510 511 512 513 514 515 frequencyband channel 1 2 3 4 5 6 7 8 852-867 frequency 852 853 854 855 856 857 858 859 channel 9 10 11 12 13 14 15 16 frequency 860 861 862 863 864 865 866 867 3）OutputPower:0-10dBm; default:10dBm 4）InputSource:MICorIIS; default:MIC 5）Format:whenuseIIS,youcanchooseHighBitsorLowBits 6）NetID:youcansetIDofeachmodule 7）Volume: high low of voice,default: 18%（ If the receiver volume is set to 100%, the transmitter volume should be no more than 20% for optimal performance. If the transmitter
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 7 - sales@nicerf.com volumeissettoohigh,thereceiver'soutputvolumemaybecomedistortedduetosaturation.） 8）Signal Strength Threshold: Sound volume preset value. When the emitted sound is larger than this value, it can be emitted. the smaller the more sensitive.（If the threshold is set below 55%, it will continuously transmit upon power-on. If it is set between 56% and 80%, it will transmit continuously when the input signal exceeds 50mV Vpp. If it is set above 80%, the inputsignalmustexceed180mVVppforcontinuoustransmission.） 1）Version:FirmwareVersionofmodule1.4 2）Channel:1-16channelcanbechose ThechannelthatconfiguresSA326needsexternalpowersupply. Each frequency band is divided into 16 channels, with a difference of 1MHz between adjacent channels.Thespecificcorrespondingfrequenciesareshowninthetablebelow： frequencyband channel 1 2 3 4 5 6 7 8 500-515 frequency 500 501 502 503 504 505 506 507 channel 9 10 11 12 13 14 15 16 frequency 508 509 510 511 512 513 514 515 frequencyband channel 1 2 3 4 5 6 7 8 852-867 frequency 852 853 854 855 856 857 858 859 channel 9 10 11 12 13 14 15 16 frequency 860 861 862 863 864 865 866 867 3）Anti-Howl:Therewillbenoisewhenthemicrophoneandspeakerareclosetogether.DefaultOFF. 4）InputSource:MICorIIS;default：MIC
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 8 - sales@nicerf.com 5）Format:whenuseIIS,youcanchooseHighBitsorLowBits 6）Net_ID:youcansetIDofeachmodule 7）Power_Saving:powersavingmode,default：off 8）Volume:highlowofvoice,default:77% 9）SignalStrengthThreshold:Soundvolumepresetvalue.Whentheemittedsoundislargerthan thisvalue,itcanbeplayed.Thesmallerthemoresensitive. 7. Module interface description SA326-TX SA326F30-TX SA326-RX
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 9 - sales@nicerf.com 8. Pin definition SA326-TX Pin NO. Pin name I/O Level standard Description
1 GND 0 Connectthenegativepoleofthepowersupply
2 1 I 0-3.3V Frequency 16 channel 8421 encoding, the first digit, default "1" output 3 2 I 0-3.3V Frequency 16-channel 8421 encoding, the second bit, default "1" output 4 4 I 0-3.3V Frequency 16 channel 8421 encoding, the 4th bit, default "1" output 5 8 I 0-3.3V Frequency 16 channel 8421 encoding, the 8th bit, default "1" output 6 CS I/O 0-3.3V Internally connected to the EN of the LDO, pull down the dormancy,internalpull-up,default"1"output
7 GND 0 Connectthenegativepoleofthepowersupply
8 VCC 3.3-6V Thepositivepoleoftheexternalpowersupply.(Typicalvalue4V) 9 GPIO0 I/O 0-3.3V Internally connected to GPIO0 of SA316-TX, when using I2S mode,itcanbeconfiguredasLRCK 10 GPIO1 I/O 0-3.3V Internally connected to GPIO1 of SA316-TX, when using I2S mode,itcanbeconfiguredasSCK 11 GPIO2 I/O 0-3.3V Internally connected to GPIO2 of SA316-TX, when using I2S mode,itcanbeconfiguredasMCLK 12 GPIO3 I/O 0-3.3V Connect to GPIO3 of SA316-TX, it can be configured as SDIN whenusingI2Smode 13 GPIO4 I/0 0-3.3V GPIO4withinternalaudiochip 14，15 GND 0 Connectthenegativepoleofthepowersupply
16 MIC_P I Microphone input positive terminal, (the best signal is less than
300mVrms)
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 10 sales@nicerf.com SA326F30-TX Pin NO. Pin name I/O Level standard Description 1,2,8,12，18 GND 0 Connectthenegativepoleofthepowersupply 3 NC 4 1 I 0-3.3V Frequency 16 channel 8421 encoding, the first digit, default "1" output 5 2 I 0-3.3V Frequency 16-channel 8421 encoding, the second bit, default "1" output 6 4 I 0-3.3V Frequency 16 channel 8421 encoding, the 4th bit, default "1" output 7 8 I 0-3.3V Frequency 16 channel 8421 encoding, the 8th bit, default "1" output 9 GPIO4 I/0 0-3.3V GPIO4withinternalaudiochip 10 GPIO3 I/O 0-3.3V Connect to GPIO3 of SA316F30-TX, it can be configured as SDINwhenusingI2Smode 11 VCC 3.3-5V Thepositivepoleoftheexternalpowersupply.(Typicalvalue4V)
13 CS I 0-5V Internally connected to the EN of the LDO, pull down the
dormancy,internalpull-up,default"1"output 14 TX_DE O 0-3.3V The transmission indicator pin is high when transmitting and low whennottransmitting. 15 GPIO1 I/O 0-3.3V Internally connectedto GPIO1of SA326F30-TX, when usingI2S mode,itcanbeconfiguredasSCK 16 GPIO0 I/O 0-3.3V Internally connectedto GPIO0of SA326F30-TX, when usingI2S mode,itcanbeconfiguredasLRCK 17 GPIO2 I/O 0-3.3V InternallyconnectedtoGPIO2of SA326F30-TX ,whenusingI2Smode,itcanbeconfiguredasMCLK
19 MIC_N I The negative input of the microphone, it can be connected to the
negativepoleofthemicrophoneorgrounded.
20 MIC_P I
Microphoneinputpositiveterminal,(thebestsignalislessthan 300mVrms)
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 11 sales@nicerf.com SA326-RX Pin NO. Pin name I/O Level standard Description 1 1 I 0-3.3V Frequency 16 channel 8421 encoding, the first digit, default "1" output 2 2 I 0-3.3V Frequency 16-channel 8421 encoding, the second bit, default "1" output 3 4 I 0-3.3V Frequency16channel8421encoding,the4thbit,default"1"output 4 8 I 0-3.3V Frequency16channel8421encoding,the8thbit,default"1"output 5 GPIO4 I/O 0-3.3V ConnecttoGPIO4ofSA316-RX 6 GPIO3 I/O 0-3.3V InternallyconnectedtoGPIO3ofSA316-RX,itcanbeconfiguredas MCLKwhenusingI2Smode 7 GPIO2 I/O 0-3.3V Internallyconnectedto GPIO2ofSA316-RX,whenusingI2S mode, itcanbeconfiguredasSDIO 8 CS I/O 0-3.3V InternallyconnectedtotheENoftheLDO,pulldownthedormancy, internalpull-up,default"1"output
9 GND I 0 Connectthenegativepoleofthepowersupply
10 VCC I 3.3-6V Thepositivepoleoftheexternalpowersupply.(Typicalvalue4V) 11 GPIO1 I/O 0-3.3V Internallyconnectedto GPIO1ofSA316-RX,whenusingI2S mode, itcanbeconfiguredasSCK 12 GPIO0 I/O 0-3.3V Internallyconnectedto GPIO0ofSA316-RX,whenusingI2S mode, itcanbeconfiguredasLRCK
13 GND I 0 Connectthenegativepoleofthepowersupply
14LOUL LOUT+ O Connect to LOUT+ of SA316-RX, which can directly drive earphones
15 GND I 0 Connectthenegativepoleofthepowersupply
16 ROUT+ O Connect to ROUT+ of SA316-RX, which can directly drive
17 GND I 0 Connectthenegativepoleofthepowersupply
18 VOL-ADJ I3.33. 3.3V Volume adjustment pin, the module has been connected to a 50K ohm adjustable potentiometer, and an external potentiometer can be connected
19 SPKN O Poweramplifieroutputpin,external4ohmor8ohm2Wspeaker
20 SPKP O Poweramplifieroutputpin,external4ohmor8ohm2Wspeaker
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 12 sales@nicerf.com 9. Power Level Comparison Table (SA326F30) PowerLevel 500MHz 860MHz Power（dBm) Current（mA) Power（dBm) Current（mA) 0 22.7 418 24.1 380 2 24.6 437 25.8 418 4 27.0 486 27.7 505 6 28.1 521 28.5 562 8 30.0 601 29.2 649 10 30.1 627 29.8 675 10. Voltage and Power Comparison Chart (SA326F30) SupplyVoltage(V) 500MHz 860MHz Power（dBm) Current（mA) Power（dBm) Current（mA) 5.0 30.1 626 29.6 640 4.5 28.5 583 28.7 612 4.0 27.4 546 28.0 581 3.5 26.5 488 26.9 519 3.0 24.0 345 22.0 315 11. Mechanical size (unit：mm) SA326-TX SA326-RX
www.nicerf.com SA326 NiceRF Wireless Technology Co., Ltd. Rev 1.7 - 13 sales@nicerf.com SA326F30-TX