SA618F22 : 160mW 8K Sampling Rate Full Duplex Wireless Audio Transceiver Module

SA618F22 is an embedded full duplex transmission module, combining wireless digital and wireless audio.
Users can not only wirelessly transmit data through serial ports, but also achieve wireless transmission of voice through I2S or analog audio interfaces.
The module is equipped with a high-speed micro-controller, high-performance RF chip, and high quality voice Codec, and adopts broadband spread spectrum technology.The characteristics are low power consumption, long distance, and flexible frequency adjustment.
SA618F22 support maximum 8 channels transmission and reception functions at the same time, as well as maximum 3 level routers.
This module adopts a highly integrated design, and users only need to connect audio amplifiers, microphones, and speakers externally to easily achieve remote wireless transmission.
SA618F22 achieve full duplex through serial port for data transmission.
SA618F22 supports (OTA) air upgrade or serial upgrade. The parameters of the wireless module can be set easily by PC software or serial command.
SA618F22 is strictly produced and tested using lead-free technology, meeting RoHS and Reach standards.

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Parameter	Test Conditions	Min.	Typ.	Max.	Unit
Operating voltage		2.3	3.3	3.6	V
working temperature		-30	25	70	℃
Current consumption
Sleep current			12		uA
RX current	@ No audio output		50		mA
RX current	@8Ω,1W audio output		300		mA
TX current	3.3v,@22dBm		110		mA
RF parameter
Operating frequency	UHF	420		510	MHz
Customizable frequency		150		960	MHz
Default frequency value for 16 channels	UHF ( 1MHz interval)	440.125		455.125	MHz
Transmit power	Default:22dBm	0		22	dBm
Second Harmonic			-40		dBm
Bandwidth（BW)			500		KHz
Receiving sensitivity			-117		dBm
Audio parameters
Modulation sensitivity			10	100	mV
Receive signal-to-noise ratio(SNR)			90		dB
frequency response		60		3800	Hz
Audio output（line out)	Load 16 Ω			40	mW
Delay parameters	2 channels	80	100	120	ms
	3 channels	120	160	180	ms
	4 channels	160	200	240	ms
	6 channels	240	300	360	ms
	8 channels	320	400	480	ms

Type	wireless audio
Output Power	160mW

Features

Analog input & output application circuit

I2S Input & output application circuit

Pin_definition

Pin NO.	Pin name	I/O	Description
1	+3.3v		2.3-3.6V
2,6,19,23,25	GND		Ground
3	SDIN	I	External I2S (0-3.3V)
4	BCLK	O	External I2S (0-3.3V)
5	WS	O	External I2S (0-3.3V)
7	SD	O	External I2S (0-3.3V)
8	RST	I	Module reset pin, externally pull down for more than 5ms will reset the module
9	TXD	O	Serial communication
10	RXD	I	Serial communication
11	MCLK	O	External I2S (0-3.3V)
12	RXLED	O	Receiving indicator, connected with external led, turn on by low level output when data or voice received, (suggest 1K ohm resistor for current limitation)
13	CS	I	Floating input, low level to enter sleep
14	TXLED	O	Transmitting indicator, connected with external led, turn on by low level output when data or voice is transmitting, (suggest 1K ohm resistor for current limitation)
15	SPKOUT+	O	External connect 8Ω 2W speaker
16	SPKOUT-	O	External connect 8Ω 2W speaker
17	MIC_N_IN	I	Negative electrode of external microphone
18	MIC_P_IN	I	Positive electrode of external microphone
20	LINE_OUT	O	Connected with 16 Ω earphones
21	Reserved		NC
22	LINE_IN	I	Line in ,maximum 1VRMS
24	PTT	I	Press to talk, pull down to enter transmission mode, pull high or leave open to enter receive mode, pull-up internally,
26	ANT		Connected with 50ohm Antenna

Dimensions