SA618F22-C1 Wireless Digital And Audio All-In-One Full-Duplex Transmission Module

SA618F22-C1 Wireless Digital And Audio All-In-One Full-Duplex Transmission Module

SA618F22-C1 is an upgraded full-duplex wireless digital and audio all-in-one transmission module from our company, featuring shorter latency and supporting high-quality calls for up to 8 users simultaneously. Users can wirelessly transmit data via the serial port and transmit voice signals Microphone,Line in or I2S. The module is equipped with a high-speed microcontroller, echo cancellation circuitry, ESD protection, a high-performance RF chip, and an amplifier, utilizing wideband spread spectrum technology, resulting in low power consumption, long-range capabilities, and flexible frequency adjustment.
SA618F22-C1 supports multi-channel concurrent reception and relay in a Mesh network.

SA618F22-C1 enables full-duplex communication via the serial port and features wireless data transmission with Mesh networking capabilities. It supports over-the-air (OTA) upgrades or serial port upgrades, allowing users to easily set internal parameters and control its transmission functions through the serial port.
SA618F22-C1 is equipped with hardware and software watchdogs to prevent system crashes and includes reverse polarity protection, overcurrent, and overvoltage protection circuits, ensuring the device operates safely and stably in various environments.
SA618F22-C1 is manufactured and tested using strict lead-free processes, complying with RoHS and REACH standards, and is certified by CE and FCC.

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Parameters	Condition	Min.	Typ.	Max.	Unit
Power Supply		2.3	3.3	3.6	V
Working temperature		-30	25	70	℃
Current consumption
Sleep current			12		uA
RX Current	@no voice output		50		mA
TX current(High power)	@22dBm Average		60		mA
RF Parameters
Operating frequency	UHF	420		510	MHz
Customizable frequency		150		960	MHz
Default shipping frequency	UHF ( 1MHz interval)	440.125		455.125	MHz
Transmit power	Default	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
Voice output（line out)	Load 16 Ω			40	mW
Delay parameters	8channels	160	200	240	ms

Features

Frequency Band UHF 420-510MHz(Customizable 150-960 MHz)
Up to 8 devices transmit simultaneously ( Receive unlimited)
Echo cancellation function
VOX function
High integration and compact size
Low power consumption in sleep mode
1-3KM transmission distance in the open area
Supports 2 to 8 people in high-quality simultaneous calls
Shorter call latency
I2S Digital audio+analog audio
Line In + Mic input
Full-duplex data transmission
Mesh network
Support OTA &Serial upgrade
High reception sensitivity: -117 dBm
Applications
Fire emergency communication
Metro,Tunnel communication
Riding intercom system
High-quality full duplex walkie talkie
Conference telephone syste
Building community security system
Security intercom system for special scenarios
Earphone walkie talkie
Special job assignment walkie talkie

Analog input & output application circuit(Built-in audio amplifier)

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Analog input & output application circuit(External audio amplifier)

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IIS input and output application circuit

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Pin NO.	Pin name	I/O	Description
1	+3.3V		Connect to power positive（2.3-3.6V）
2,6,19,23,25	GND		Connect to power negative
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, pull low for more than 5 ms to reset the module
9	TXD	O	Module serial port transmit pin
10	RXD	I	Module serial port receive pin
11	MCLK	O	ExternalI2S (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	The module's sleep pin， high level for operation and low level for sleep, with an internal pull-up, defaulting to high level.
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		Module test pin, user should leave it unconnected
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

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SA618F22-C1 Wireless Digital And Audio All-In-One Full-Duplex Transmission Module

Features

Applications

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