EM3585-RT

Power - Output:	8dBm
Package / Case:	48-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C
Current - Transmitting:	24mA ~ 45mA
Current - Receiving:	23.5mA ~ 30mA
Voltage - Supply:	2.1 V ~ 3.6 V
GPIO:	24
Serial Interfaces:	I²C, JTAG, SPI, UART
Memory Size:	512kB Flash, 32kB RAM
Sensitivity:	-102dBm
Series:	--
Data Rate (Max):	5Mbps
Frequency:	2.4GHz
Modulation:	O-QPSK
Protocol:	Zigbee®
RF Family/Standard:	802.15.4
Type:	TxRx + MCU
Part Status:	Active
Packaging:	Tray

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EM3585-RT is one of the many RF transceiver ICs developed by Silicon Laboratories. This chip leverages the company\'s EMxxx2 radio standard, which is a low-power, high-efficiency, half-duplex radio standard designed to enable low data rate communication over a wide range of frequencies. The EMxx2 uses a Random Frequency Hopping Spread Spectrum (RFHSS) technology to spread its signal over multiple frequencies, making it resistant to interference from other systems in close proximity to it.The EM3585-RT is a 2.4 GHz transceiver optimized for low-power operation, with a power consumption of about 5 mA at full load. It can operate in a wide range of frequencies (2.4 - 2.5 GHz), and supports a variety of modulation schemes including GFSK, 4-FSK, BPSK, and 2-FSK. The chip also features an on-chip power amplifier (PA) as well as a low-noise amplifier (LNA). The PA and LNA are optimized for digital FSK modulation schemes, which makes it suitable for use in wireless systems that require high efficiency data transmission and reception.The EM3585-RT is designed to be used in a variety of applications, including wireless sensor networks, smart home applications, building automation, energy monitoring, and automotive applications. The chip provides a range in excess of two kilometers for digital applications, allowing for reliable long-range communication in outdoor applications. The IC is also suitable for use in indoor applications, operating over a range of up to 100 meters.In terms of working principle, the EM3585-RT chip transmits or receives data using a Random Frequency Hopping Spread Spectrum (RFHSS) protocol. The protocol involves the chip randomly hopping from one frequency to another in order to spread its signal over multiple frequencies and therefore reduce interference. The frequency-hopping sequence is pre-programmed into the chip so that signals from multiple sources do not interfere with each other.On the receive side, the EM3585-RT chip utilizes an on-chip low-noise amplifier and an auto-gain-control circuit which helps to maintain a constant bit rate. The chip can also automatically adjust its output power in order to optimize range and battery life. The chip supports various modulation schemes, including GFSK, 4-FSK, BPSK, and 2-FSK, and has an operating data rate of up to 500 kbps.In conclusion, the EM3585-RT is a 2.4 GHz RF transceiver ICs that is well-suited for low-power applications such as wireless sensor networks, smart home, building automation, energy monitoring, and automotive. It supports a range of frequencies and various modulation schemes, and features an on-chip PA and LNA to increase efficiency. The chip utilizes a RFHSS protocol to spread its signal over multiple frequencies and reduce interference from other radio systems.

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