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Description: NEC's UPB1008K is a Silicon RFIC specifically designed for handheld low-power, low-cost GPS receivers. The integrated circuit combines a low-noise amplifier (LNA) followed by a double-conversion RF/IF downconverter block and a phase-locked loop (PLL) frequency synthesizer on a single chip. The second intermediate frequency (IF) is a pseudo-baseband signal fed into an on-chip 2-bit analog-to-digital converter (ADC). The device can operate on a supply voltage as low as 2.7 V and is housed in a compact 36-pin QFN (Quad Flat No-lead) package, resulting in very low power consumption and reduced board space. NEC's stringent quality assurance and testing procedures ensure the highest reliability and performance. By NEC Electronics Inc.

The UPB1008K RFIC is engineered to meet the demanding requirements of modern GPS applications, where space and power efficiency are paramount. The integration of multiple functionalities into a single chip not only minimizes the overall footprint of the GPS receiver but also simplifies the design process, allowing for more compact and efficient end products.

The low-noise amplifier (LNA) at the front end of the device is crucial for enhancing the sensitivity of the GPS receiver by amplifying weak signals received from satellites. Following the LNA, the double-conversion RF/IF downconverter block effectively reduces the frequency of the incoming RF signals to a more manageable IF range, facilitating easier processing and improved performance.

The PLL frequency synthesizer plays a vital role in generating the necessary local oscillation frequencies for the downconversion process, ensuring that the receiver can accurately process signals across the entire GPS frequency band. The inclusion of a pseudo-baseband signal output allows for straightforward interfacing with subsequent digital processing stages, enhancing the overall versatility of the device.

Operating at a low supply voltage of 2.7 V is particularly advantageous for battery-powered applications, as it contributes to extended battery life while maintaining operational efficiency. The compact QFN package design further supports the integration of the UPB1008K into space-constrained environments, making it an ideal choice for portable GPS solutions.

Overall, the UPB1008K embodies a sophisticated blend of advanced technology and practical design, resulting in a reliable and high-performance solution for low-power GPS receiver applications.NEC`s UPB1008K is a Silicon RFIC especially designed for handheld low power/low cost GPs receivers. The IC com- bines an LNA followed by a double-conversion RF/IF downconverter block and a PLL Frequency Synthesizer on one chip. The second IF Freqency is a pseudo- baseband signal into a on-chip 2-bit A/D converters The device CAN operate on a suppl

y voltage as low as 2. 7 V, and is a housed in a small 36 pin QFN (Quad, Flat, No-lead) package, resulting in a very low power consumption and reduced board space. NEC`s stringent quality assurance and test procedures en- sure the highest reliability and performance.

By NEC Electronics Inc.