SA628F30 : 1W Long Range Full Duplex Wireless Audio Module

SA628F30 is a 1W output power full duplex wireless voice module with mesh network. SA628F30 is very easy to use. It start to work by just connecting antenna, power supply and speaker, microphone, Audio amplifier, RF channel switch, volume adjustment are all embedded on board. SA628F30 has USB interface, and specified PC software. It can be configured and SMS Tx/Rx easily by the PC software.
The SA628F30 module has built-in high speed micro -controllers, high quality voice Codec, high-performance RF chips and amplifiers. This wireless module adopts the newest generation LoRa chip, which has the characteristics of low power consumption, long distance, and flexible frequency adjustment. SA628F30 has I2S and analog audio interface for different application. SA628F30 support full duplex SMS communication.
SA628F30 embed very good voice codec, which achieve much better voice quality than walkie talkie in the market.
SA628F30 supports concurrent Tx and concurrent Rx. It support maximum 8 devices transmitting simultaneously. There is no limitation in receiving. Mesh Network is available to extend the range. The mesh function is easy to achieve by setting the modules as Node, Router or Node & Router.
SA628F30 can be upgraded over air ( OTA ) or by serial communication.
SA628F30 strictly uses lead -free process production and testing, which meets the standards of ROHS and Reach

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Parameters	Condition	Min.	Typ.	Max.	Unit
Power Supply		3.3	4	5.5	V
Working temperature		-30	25	70	℃
Current consumption
Sleep current			65		uA
RX Current	@no voice output		75		mA
TX current(High power)	4.2v,@30dBm		450		mA
RF Parameters
Working Frequency	UHF	410		490	MHz
Customizable frequency		150		960	MHz
Default frequency value for 16 channels	UHF(1MHz interval)	440.125		455.125	MHz
Transmit power	Default:32dBm	15	30	32	dBm
Bandwidth（BW)			500		KHz
Receiving sensitivity			-117		dBm
voice parameters
Modulation sensitivity			10	100	mV
Receive signal-to-noise ratio(SNR)			90		dB
Frequency response		60		3800	Hz
Voice output（line out)	Load 16Ω			40	mW
Voice output power（SPK+,SPK-)	Load 8Ω			2000	mW
Delay parameters	2channels		80		ms
	3channels		120		ms
	4channels		160		ms
	6channels		240		ms
	8channels		320		ms

Features

Applications

Pin No.	Pin name	Description
1	SPKOUT+	Connect with 8 ohm 2W speaker
2	SPKOUT-	Connect with 8 ohm 2W speaker
3	MIC_N	Connected with the negative of external microphone
4	MIC_P	Connected with the positive of external microphone
5,14,23	GND	Connect to the negative pole of the power supply
6	LINEIN	Line in ,maximum 1VRMS
7	LINEOUT	Line out , Connected external16Ω earphone
8	Reserved	NC
9	8	the onboard 16 RF channel switch, eg. When the rotary switch changed to channel 11^th, the output ( 8, 4, 2, 1 ) is: 1011: channel 11th
10	4
11	2
12	1
13	VCC	VCC(3.3-5.5V)
15	SDIN	ExternalI2S(0-3.3V)
16	BCLK	ExternalI2S(0-3.3V)
17	WS	ExternalI2S(0-3.3V)
18	VOL-ADJ	50K variable resistoris recommended
19	SD	External I2S (0-3.3V)
20	PTT	Press to talk, 0: RX mode, 1: Tx mode. Pull up internally
21	MCLK	External I2S (0-3.3V)
22	CS	0: sleep, 1: working, Pull up internally.
24	NC