AMB8420

Serial Interfaces:	SPI, UART
Package / Case:	19-SMD Module
Operating Temperature:	-30°C ~ 85°C
Mounting Type:	Surface Mount
Current - Transmitting:	45mA
Current - Receiving:	20mA
Voltage - Supply:	2.7 V ~ 3.6 V
Memory Size:	--
Utilized IC / Part:	--
Antenna Type:	Integrated, Ceramic Patch
Series:	--
Sensitivity:	-108dBm
Power - Output:	10dBm
Data Rate:	100Kbps
Frequency:	868MHz
Modulation:	2-FSK, MSK
Protocol:	--
RF Family/Standard:	General ISM
Part Status:	Active
Packaging:	Tray

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AMB8420 RF Transceiver Modules: Application Field and Working Principle

The AMB8420 is a wireless transceiver module designed for the 2.4GHz ISM applications. It is a complete, high performance, low power radio frequency (RF) system made up of both a transmitter and receiver module - or transceiver. Manufactured by Ambicom Inc., the AMB8420 offers two transmit power levels, one for applications needing high power output, and one designed to lower power consumption and comply with industry standards.

Applications

AMB8420 transceiver modules are used in numerous applications such as wireless POS (point of sale) systems, short-distance surveillance, security systems, and automotive applications. Designed and developed to comply with the FCC and ETSI Class A regulations, there are two primary methods to use these modules in a given application - directly as a part of the system\'s motherboard or as a stand-alone module.

Working Principle

At the heart of the AMB8420 lies an RF transceiver chip which works on the 2.4GHz frequency. Each module has a dedicated microcontroller to enable modular programming, and has been designed to incorporate ISO/IEC 14443A Type A/B standard protocol support. Whenever a user permits the module to receive or transmit signals, the microcontroller will first execute the request and only then activate the respective data ports of the RF transceiver.When transmitting signals, the microcontroller first uses the internal oscillator to generate pulses. These pulses are then mixed and modulated with the data to be transmitted in order to generate desired signals. These signals are then amplified by the RF amplifier and sent out wirelessly.On the other end, the FIF (Frequency Independent Front-end) filters out any noise and interference generated by other devices. After isolating the desired signal, it is passed to the receiver chain consisting of an amplifier, limiter, demodulator (Baseband Demodulation), and data recovery and pre-processing. The signal is then demodulated and sent back to the microcontroller for further processing.

Power Management

The module offers two different transmit power levels - optimum and lower power. The optimum power level uses up to 14dBm while the lower power level uses up to 7dBm.The module also features power management functions such as an adjustable transmitter power output level, low-power mode, and a shutdown function. These features enable the module to remain compliant with industry standards while simultaneously allowing for lower power consumption.

Conclusion

In conclusion, the AMB8420 wireless transceiver modules are an efficient and reliable way of transmitting and receiving data in the 2.4GHz ISM applications. With its two transmit power levels, low power consumption, and various power management features, these modules are sure to meet the demands of any application.

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