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 wireless digital and audio all-in-one full-duplex transmission module from NiceRF. It features reduced latency and supports high-quality calls for up to 8 people simultaneously. Users can wirelessly transmit data via a serial port and can also send voice signals through I2S digital audio or analog audio interfaces. The module is equipped with a high-speed microcontroller, a high-performance RF chip, and an amplifier, employing wide band spread spectrum technology, which provides low power consumption, long transmission distances, and flexible frequency adjustment.
SA618F22-C1 supports multi-channel concurrent reception and multi-level relay transmission. With a highly integrated design, users only need to connect an audio amplifier, microphone, and speaker to easily achieve remote wireless transmission of digital voice.
SA618F22-C1 supports full-duplex wireless data transmission with relay functionality via a serial port. It allows for over-the-air upgrades or serial port upgrades. Users can quickly and easily set the internal parameters of the module through the serial port and control its sending and receiving functions.
SA618F22-C1 is produced and tested using lead-free processes, complying with RoHS and Reach standards.

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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
RX Current	@no voice output		110		mA
TX current(High power)	3.3v,@22dBm		12		uA
RF Parameters
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	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
Multi-level wireless repeating
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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