SA326F30 : Low-Latency & 48K sampling rate Wireless Audio Module

Operating voltage range

3.3

4.2

5

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（SA326F30-TX)

< 20

uA

Receive current（SA326-RX)

@VCC=4.2V　

< 140

mA

Transmit Current（SA326-TX）

@Not Transmitting　

< 75

mA

@ During Transmission

<120

mA

Emission current（SA326F30-TX）

@Not Transmitting,5v　

< 75

mA

@During Transmission,5v 30dBm　

< 700

mA

Transmit parameter

Transmit power

@VCC=4.2V

9

10

11

dBm

@VCC=5.0V

29

30

31

dBm

transmit power range

@VCC=4.2V

0

10

dBm

@VCC=5.0V

20

30

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

30

20k

Hz

Receive parameters

Receiving sensitivity

-96

dBm

Audio output amplitude (differential)

400

mVrms

Audio output drive resistance

600

Ohm

LOUT+,ROUT+Driving Resistor

16-32

Ohm

SPKP,SPKN Driving Resistor

4-8

Ohm

Signal to Noise Ratio (SNR)

@1KHz，

86

dB

Total harmonic distortion (THD)

@48K Sampling Rate

0.07

%

1,2,8,12，18

GND

0

Connect the negative pole of the power supply

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

GPIO4 with internal audio chip

10

GPIO3

I/O

0-3.3V

Connect to GPIO3 of SA316F30-TX, it can be configured as SDIN when using I2S mode

11

VCC

3.3-5V

The positive pole of the external power supply. (Typical value 4V)

13

CS

I

0-5V

Internally connected to the EN of the LDO, pull down the dormancy, internal pull-up, default "1" output

14

TX_DE

O

0-3.3V

The transmission indicator pin is high when transmitting and low when not transmitting.

15

GPIO1

I/O

0-3.3V

Internally connected to GPIO1 of SA326F30-TX, when using I2S mode, it can be configured as SCK

16

GPIO0

I/O

0-3.3V

Internally connected to GPIO0 of SA326F30-TX, when using I2S mode, it can be configured as LRCK

17

GPIO2

I/O

0-3.3V

Internally connected to GPIO2 of  SA326F30-TX

, when using I2S mode, it can be configured as MCLK

19

MIC_N

I

The negative input of the microphone, it can be connected to the negative pole of the microphone or grounded.

20

MIC_P

I

Microphone input positive terminal, (the best signal is less than

300mVrms)