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Silicon Labs Targets China’s Smart Metering Market With Best-in-Class Wireless Transceiver

Silicon Labs (NASDAQ: SLAB), a leader in high-performance, analog-intensive, mixed-signal ICs, today introduced a high-performance, ultra-low-power wireless transceiver optimized for China’s rapidly growing smart metering market. Silicon Labs’ new Si4438 EZRadioPRO® IC is designed to maximize wireless range and battery life while reducing bill of materials (BOM) cost by 30 percent for smart meters. Designed for the 425-525 MHz ISM band, the Si4438 transceiver also provides an ideal sub-GHz wireless solution for in-home energy management systems and other smart grid infrastructure applications such as long-range back-haul communications to utilities.

One of the world’s fastest-growing smart metering markets, China is rapidly upgrading its power grid to a “greener” smart grid, and smart meters for residences and businesses are key elements of this grid transformation. According to a new report by Pike Research, the installed base of smart meters in China will grow from 139 million units in 2012 to 377 million units by 2020. Smart meter market penetration in China will also reach 74 percent by 2020.

Silicon Labs engineered the Si4438 transceiver to meet the performance, energy efficiency, system cost and regulatory requirements of smart meters operating in the 470-510 MHz band in China. Featuring an efficient on-chip power amplifier (PA), the Si4438 IC provides extended range and robust communication links for smart metering by leveraging best-in-class specifications in transmit output power (+20 dBm), sensitivity (-124 dBm), link budget (144 dB) and adjacent channel rejection (58 dB). Built-in antenna diversity and support for frequency hopping further extends range and enhances wireless performance. Tightly integrated into the Si4438 transceiver, antenna diversity can improve the system link budget by 8-10 dB, resulting in substantial range increases even under adverse environmental conditions.

The Si4438 transceiver is the most energy-efficient sub-GHz wireless solution available for China’s smart metering market. The Si4438 IC’s 50 nA sleep/standby current (with register retention) is 40 times lower than competing transceivers in the China market. From its 50 nA sleep mode, the Si4438 transceiver can transition to either receive (RX) or transmit (TX) mode in only 450 microseconds. The device’s active mode TX current consumption of 75 mA at +20 dBm and active RX current consumption of 14 mA, coupled with its ultra-low standby current and fast wake times, maximize battery life for power-sensitive wireless applications, resulting in fewer battery replacements and/or reduced battery size with the same lifetime cost savings.

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