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SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module
SA326 : Low-Latency & High Fidelity Wireless Audio Module

SA326 : Low-Latency & High Fidelity Wireless Audio Module

NiceRF launched a new low-latency, long-distance, high-sampling rate, high-fidelity wireless audio module SA326. SA326 series products are divided into transmitter module SA326-TX and receiver module SA326-RX. This product is an application board for SA316-TX and SA316-RX modules. It can work after power-on. You can also directly set the frequency of the module with PC software. , Sound size and other parameters, greatly simplify the user's development difficulty, this product is widely used in occasions with relatively high sound quality requirements.

Advantages of wireless audio module SA326

 

Parameter Test Conditions Min. Typ. Max. Unit
Operating voltage range   3.3 4.2 6 V
Range of working temperature   -20 25 60
Operating frequency range @UHF 500   980 MHz
@VHF 160   270 MHz
Audio transmission and reception delay     4   ms
Serial port baud rate     9600   bps
Current consumption
Sleep current(SA326-RX)     <45   uA
Sleep current(SA326-TX)     <45   uA
Receive current(SA326-RX) @VCC=4.2V    < 140   mA
Emission current(SA326-TX)     < 150   mA
Transmit parameter
Transmit power @VCC=4.2V 0 10   dBm
Emission bandwidth(BW)     300   KHz
Adjacent channel power ratio(ACPR) @600KHZ   -60   dBc
Maximum microphone input voltage     0.3 1.5 Vrms
Audio frequency response range   20   20k Hz
Receive parameters
Receiving sensitivity     -96   dBm
Audio output amplitude (differential)     400   mVrms
Audio output drive resistance     600   Ohm
Signal to Noise Ratio (SNR) @1KHz,Vmic=-30dBv   96   dB
Total harmonic distortion (THD) @48K sampling rate, Vmic=-30dBv   0.03   %
Type Wireless audio
Output Power 10mW

Features of SA326 wireless audio module

  • UHF frequency band:868 MHz, UHF frequency band:500~980 MHz, VHF frequency band:160~270 MHz
  • The transmission distance is 200 meters in the open area
  • Receiving sensitivity: -96 dBm
  • Audio signal to noise ratio: 96 dB
  • Frequency response: 20 Hz-20 KHz
  • The delay from microphone input to audio output is less than 3ms
  • Digital modulation method: pi/4 DQPSK
  • Occupied bandwidth: <300 KHz
  • Transmission rate: 204.8 Ksps
  • Sampling rate: 48 KHz

 

Applications of SA326 wireless audio module

  • Wired speakers become wireless speakers
  • wireless microphone
  • Wireless Headphones
  • High-quality wireless audio transmission

SA326-TX

Interface description of wireless audio module SA326-TX

 

SA326-RX

Interface description of wireless audio module SA326-RX

SA326-TX

Pins of wireless audio module SA326-TX

Pin NO. Pin name I/O Level standard Description
1 GND   0 Connect the negative pole of the power supply
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, internal pull-up, default "1" output
7 GND   0 Connect the negative pole of the power supply
8 VCC   3.3-6V The positive pole of the external power supply. (Typical value 4V)
9 GPIO0 I/O 0-3.3V Internally connected to GPIO0 of SA316-TX, when using I2S mode, it can be configured as LRCK
10 GPIO1 I/O 0-3.3V Internally connected to GPIO1 of SA316-TX, when using I2S mode, it can be configured as SCK
11 GPIO2 I/O 0-3.3V Internally connected to GPIO2 of SA316-TX, when using I2S mode, it can be configured as MCLK
12 GPIO3 I/O 0-3.3V Connect to GPIO3 of SA316-TX, it can be configured as SDIN when using I2S mode
13 GPIO4 I/0 0-3.3V GPIO4 with internal audio chip
14,15 GND   0 Connect the negative pole of the power supply
16 MIC_P I   Microphone input positive terminal, (the best signal is less than 300mVrms)

 

SA326-RX

Pins of wireless audio module 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 Frequency 16 channel 8421 encoding, the 4th bit, default "1" output
4 8 I 0-3.3V Frequency 16 channel 8421 encoding, the 8th bit, default "1" output
5 GPIO4 I/O 0-3.3V Connect to GPIO4 of SA316-RX
6 GPIO3 I/O 0-3.3V Internally connected to GPIO3 of SA316-RX, it can be configured as MCLK when using I2S mode
7 GPIO2 I/O 0-3.3V Internally connected to GPIO2 of SA316-RX, when using I2S mode, it can be configured as SDIO
8 CS I/O 0-3.3V Internally connected to the EN of the LDO, pull down the dormancy, internal pull-up, default "1" output
9 GND I 0 Connect the negative pole of the power supply
10 VCC I 3.3-6V The positive pole of the external power supply. (Typical value 4V)
11 GPIO1 I/O 0-3.3V Internally connected to GPIO1 of SA316-RX, when using I2S mode, it can be configured as SCK
12 GPIO0 I/O 0-3.3V Internally connected to GPIO0 of SA316-RX, when using I2S mode, it can be configured as LRCK
13 GND I 0 Connect the negative pole of the power supply
14 LOUL  LOUT+ O   Connect to LOUT+ of SA316-RX, which can directly drive earphones
15 GND I 0 Connect the negative pole of the power supply
16 ROUT+ O   Connect to ROUT+ of SA316-RX, which can directly drive earphones
17 GND I 0 Connect the negative pole of the power supply
18 VOL-ADJ I 3.33.   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   Power amplifier output pin, external 4 ohm or 8 ohm 2W speaker
20 SPKP O   Power amplifier output pin, external 4 ohm or 8 ohm 2W speaker

SA326-TX

Mechanical dimensions of wireless audio module SA326-TX

 

SA326-RX

Mechanical dimensions of wireless audio module SA326-RX

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