S205D-M Beidou-3 short message communication chip

The S205D-M chip is an integrated chip that integrates the RF and baseband of Beidou-3 short message communication, supports the RDSS communication of Beidou-3 area, and is compatible with the RDSS communication function of Beidou-2. It has the characteristics of simple application, high integration, small size, and low power consumption.

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Product features

High integration
Integrated high-performance processor, RF, memory, size 10mm×10mm, simplified peripheral circuit design
Low power design
Operating power consumption below 0.3W, suitable for small portable device applications
Single carrier suppression technology
Transmission without single carrier, effectively reduce signal interference
Interface richness
With UART, I2C, PPS, SPI, GPIO and other peripheral interfaces

Technical Index

Performance index	RDSS property	Receiving frequency point	receiveS1I、S2COutbound signal, frequency range: 2491.75 MHz±8.16MHz
		Receiving sensitivity	S1I：The signal power is -127.6dBm，Bit error rate：≤1×10-5
			S2C：24kbps Information frame，Bit error rate：≤1×10-5（Signal power-123.8dBm）
			S2C：16kbps Information frame，Bit error rate：≤1×10-5（Signal power-127.5dBm）
			S2C：8kbps Information frame，Bit error rate：≤1×10-5（Signal power-130dBm）
		Receiving beam number	Beidou-2：10；Beidou-3：14
		Transmitting frequency point	Lf0 ：1615.68 MHz±4.08MHz
			Lf1 ：1614.26 MHz±4.08MHz
			Lf2 ：1618.34 MHz±4.08MHz
		Transmitting power	-10dBm ~ +10dBm
		Transmission frequency accuracy	≤5×10-7
		Modulation phase error of transmitted signal	≤3°
		Short message communication capacity	Maximum length of a single Beidou 2 message120 hanzi
			Maximum length of a packet in the Beidou 3 area1000 hanzi
Physical characteristics	Structural dimension		10mm×10mm
	Encapsulation form		PBGA256
	Supply voltage		Core：0.8V IO：1.2V、1.8V、3.3V
Environmental index	Operating temperature		-40℃ ~ +85℃
	Storage temperature		-55℃ ~ +125℃
Chip interface	Functional interface		UART、I2C、PPS、SPI、GPIO、ODO