SA618F30 : 1W Long Range Full Duplex Wireless Audio Module With ESD Protection

SA618F30 is a 1W & long range & 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.
SA618F30 support maximum 8 channels transmission and reception functions at the same time, as well as maximum 3 level routers for mesh network.
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.
SA618F30 achieve full duplex through serial port for data transmission.
SA618F30 supports (OTA) air upgrade or serial upgrade. The parameters of the wireless module can be set easily by PC software or serial command.
SA618F30 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		3.3	4.2	5.5	V
working temperature		-30	25	70	℃
Current consumption
Sleep current			10	20	uA
RX current	@ No audio output		50	55	mA
RX current	@8Ω,1W audio output				mA
TX current	4v,@30dBm		450	550	mA
RF parameter
Operating frequency	UHF	410		480	MHz
Customizable frequency		150		960	MHz
Default frequency value for 16 channels	UHF ( 1MHz interval)	440.125		455.125	MHz
Transmit power	@5V	16		32	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	1 W

Features

Frequency Band 410~480MHz(customizable 150-960 MHz) Up to 8 devices transmit simultaneously ( Receive unlimited)
Echo cancellation function
VOX function
Mesh Network
I2S Digital audio & analog audio
Line In + Mic - input
Full duplex data transmission;
Support data transmission
Sleep low power consumption
Support OTA &Serial upgrade
3KM transmission distance in the open area
High Receiving sensitivity：-117 dBm
High integration and small size

Applications

Analog input & output application circuit

SA618F30 Analog input & output application circuit

I2S Input & output application circuit

SA618F30 I2S Input & output application circuit

Pin definition of audio transceiver module SA918F30

Pin NO.	Pin name	I/O	Description
1	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)
2	RST	I	Module reset pin, externally pull down for more than 5ms will reset the module
3, 6, 10, 12,15,19	GND		Ground
4	MIC_N_IN	I	Negative electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
5	MIC_P_IN	I	Positive electrode of external microphone, serial connected with 220 nH inductance, refer to below typical circuit.
7	Aux_IN	I	Line in & Microphone input
8	LINE_OUT	O	Connected with 16 Ω earphones
9	Reserved		NC
11	+3.3V Out	O	3.3v regulator out, maximum 50mA loading
13	ANT		Connected with 50ohm Antenna
14	VCC		Power supply ( 3.3 – 5.5V )
16	SDIN	I	Connected with External I2S device, ( 0 – 3.3V )
17	BCLK	O
18	WS	O
20	SD	O
21	PTT	I	Press to talk, pull down to enter transmission mode, pull high or leave open to enter receive mode, pull-up internally,
22	TXD	O	Serial communication
23	RXD	I	Serial communication
24	MCLK	O	Connected with External I2S device (0-3.3V)
25	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)
26	CS	I	Floating input, low level to enter sleep

Thickness : 3.2mm

Size of audio transceiver module SA918F30