WIZFI250-H

Serial Interfaces:	SPI, UART
Package / Case:	73-SMD Module
Operating Temperature:	-20°C ~ 85°C
Mounting Type:	Surface Mount
Current - Transmitting:	385mA
Current - Receiving:	120mA
Voltage - Supply:	3 V ~ 3.6 V
Memory Size:	1MB Flash, 128kB SRAM
Utilized IC / Part:	--
Antenna Type:	Integrated, Trace + U.FL
Series:	--
Sensitivity:	-96dBm
Power - Output:	16.5dBm
Data Rate:	65Mbps
Frequency:	2.4GHz
Modulation:	16QAM, 64QAM, BPSK, CCK, DSSS, OFDM, QPSK
Protocol:	802.11b/g/n
RF Family/Standard:	WiFi
Part Status:	Active

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RF Transceiver Modules: WIZFI250-H Application Field and Working Principle

The WIZFI250-H is one of the top wireless-communication modules currently on the market manufactured by WIZNET Co., Ltd. It is based on the 802.11b/g/n single-band standard and supports IEEE802.11b/g/n security standard. Though this is a simple application, the WIZFI250-H can still provide significant and essential functions in terms of wireless-communication. This article provides an overview of the application field and working principle of the WIZFI250-H.

Application Field

The WIZFI250-H is designed to address a wide range of wireless-connectivity requirements, from in-home media streaming to industrial control solutions. In-home streaming media applications could benefit from the 802.11b/g/n standard, with transfer speeds up to 100 Mbps. Industrial Wireless Mesh networks are other areas where the WIZFI250-H can be very productive due to its robust, long-distance air-link and strong security standards.In terms of deployment, the WIZFI250-H can be used in both indoor and outdoor applications. It supports a temperature range of -40°C to 85°C, and is quite tolerant of environmental interference, as it contains interference cancellation circuitry inside the device. Additionally, for outdoor deployment it has an IP-rating of IP65 which ensures a waterproof construction.

Working Principle

At the core of the WIZFI250-H lies a powerful Cortex-M3 processor running at up to 133 MHz. This processor is responsible for the signal processing as well as the management and authentication of the device.The WIFI module supports WLAN 802.11b/g/n protocols that enable the device to transmit and receive data at very high speeds while also providing secure encryption protocols. The WIZFI250-H is an open-source platform, allowing users to customize and integrate the module into their own application. Moreover, the integrated Serial-Tunnel Protocol allows users to access the module from remote locations.The WIZFI250-H’s antenna options are diverse and offer a variety of antennas to fit specific applications. The WIZFI250-H uses a highly efficient SAW-filter to ensure a reliable wireless communication link up to 100 meters. Both direct-sequence spread-spectrum (DSSS) and frequency-hopping spread-spectrum (FHSS) methods are used in the WIZFI250-H to reduce interference.

Conclusion

The WIZFI250-H wireless communication module is one of the top-of-the-line solutions currently available. It provides a dependable link in areas with environmental interference, while offering an open-source platform, secure encryption protocols and temperature range of -40°C to 85°C for both indoor and outdoor applications. The module also features a variety of antenna options, graphical user interface and a highly efficient SAW-filter for long-distance air-links.

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