BROADCHIP TECHNOLOGY GROUP Co., Ltd. (BROADCHIP TECHNOLOGY GROUP Co., Ltd.) is an integrated circuit design company established by a Chinese entrepreneurial team in Silicon Valley, USA. In 2007, it established a wholly-owned subsidiary in Shanghai: BroadChip Electronic Technology (Shanghai) Co., Ltd. The company's goal is to create a world-renowned enterprise with core competitiveness by introducing advanced integrated circuit design technology and innovative concepts from Silicon Valley, USA, combined with the use of a large number of outstanding scientific and engineering talents in China. BroadChip Electronics' main business will focus on the design, development and sales of high-performance, high-quality, low-power, and cost-effective analog and mixed integrated circuit chips. Its products will be widely used in computers, communications, automotive electronics, and popular civilian electronic products. The company focuses on the design, development and sales of high-performance, high-quality analog and mixed-signal integrated circuit chips and acceleration sensor chips. It adopts the internationally common model of fabless production design companies, outsourcing wafer processing and packaging testing, and focusing on product design, development and sales.
The BCT4303 is a dual SIM card control chip optimized for GSM/EDGE/GPRS/3G handsets, It provides the power conversion and signal level translation needed for advanced cell phones to interface with 1.8V and 3V SIMs. The device meets all requirements for 1.8V and 3V SIMs and contains LDO regulators to power 1.8V or 3V SIM card from a 2.7V to? 5.5V input.? A serial port interface(SPI) is used to control dual SIM channel individually.
?
The BCT4303 is available in 20-pin 3mm x 3mm QFN package. The operating temperature range is from -25°C to +85°C.
characteristic:
? CMOS Technology for dual SIM card ?controlling
? Control and communication through a SPI interface with baseband processor.
? Power management and control for two SIM cards
? Independent 1.8/3V VCC control for each SIM card
? Fast channel switching
? Independent clock stop mode (at high or low level) for each SIM card
? Wide 1.5V to 5.5V Vio
? 8KV ESD on SIM Card Pins,Temperature Range: –25°C to 85°C
? 20-pin 3mm x 3mm QFN package (Pb-free & Green available)
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