NiceRF SA868 2W Embedded walkie talkie module

    SA868 is a cost-effective integrated professional walkie-talkie module, built-in high-speed microcontroller, high-performance RF transceiver chip and RF power amplifier, and provides a standard serial port to communicate with the module, so that the module's related parameters can be set quickly and easily. Function control. Users only need to connect an audio amplifier, microphone, and speaker to this module to work as a small walkie-talkie. The simplified interface and ultra-small size make this module widely available, and can be easily and quickly embedded in various handheld devices to improve the overall performance of the terminal products.

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Features&Application

Features

  • UHF band 400~480 MHZ;  VHF band 134~174 MHz

  • Transmit receive frequency independent

  • Bandwidth 12.5 KHz

  • RSSI signal strength indication

  • Open distance is 5 kilometers

  • High receiving sensitivity: -124 dBm

  • Highly integrated small volume

  • 38-level CTCSS analog sub-audio code

  • 166-level positive phase, inverted CDCSS digital sub-audio

  • 8-level squelch

  • 8-level adjustable volume

  • High and low power options (1.6-1.8W)

  • Wide operating voltage 3.3-5.5 V

  • Built-in EEPROM, data power-down save

  • Stable with 1ppm TCXO crystal


Application

  • Small walkie talkie

  • Ignore the intercom system

  • Building community security system

  • Outdoor sports products

  • Audio monitoring system


Specification

Parameter

Test  condition

Min

Typ.

Max

Unit

Power  supply


3.3

4.2

5.5

V

Working  Temperature range


-30

25

70

Current  consumption

Sleep  current



≤1


uA

RX  current



60


mA

TX  currentHigh power



900

1000

mA

TX  currentlow power



450

550

mA

Transmitting  RF parameters

Frequency  range

UHF

400


480

MHz

VHF

134


174

MHz

Out  powerhigh power

@VCC=4.0V

31

32.5

33

dBm

Out  powerlow power

24

25

26

dBm

Modulation  frequency

@1.5Khz/2.5KHZ

Frequency offset


10


mV

Audio modulation distortion

@1.5Khz/2.5KHZ

Frequency offset


2

5

%

SignaltoNoiseRatio

@1.5Khz/2.5KHZ

Frequency offset

38

40

45

dB

adjacent-channel power

@12.5K offset


-60dBc


dBm

CTCSS  Modulation frequency


0.35

0.5

0.75

KHZ

Modulation  frequency

UHF

400


480

MHZ

Receiving  RF parameters

Receiving  sensitivity

13dB  Output voice signal ratio


-124


dBm

Receiving  SNR

@1.5KHZ Frequency  offset

45

50


dB

Audio output amplitude



700


mV

Audio Output impedance



200


OHm


function description

Typical Application Schematic


Pin & Dimension

Pinout definitio


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