This data sheet describes the principle, characteristics and application of µPB1005K. This IC is a double conversion RF block integrated RF/IF down-converter + PLL frequency synthesizer IC for GPS receiver. This IC uses 36-pin plastic QFN package, fixed prescaler and supply voltage. This IC is manufactured using NEC’s 20GHz fT NESAT TMIII silicon bipolar process. This process uses direct silicon nitride passivation film and gold electrodes. These materials can protect the chip surface from pollution, and prevent corrosion/migration. Thus, this IC realizes excellent performance, uniformity and reliability.
The UPB1005K is a silicon monolithic integrated circuit designed for GPS receivers. It combines a double‑conversion RF block with an RF/IF down‑converter and a PLL frequency synthesizer on a single chip, targeting high‑density surface‑mount applications.
The device is supplied in a 36‑pin plastic QFN package (6.0 × 6.0 × 0.95 mm) and operates from a 2.7 V to 3.3 V supply (absolute maximum 3.6 V). Typical current consumption is 45 mA at 3 V, and it offers a reference frequency of 16.368 MHz with a 2nd IF frequency of 4.092 MHz.