STA5620 Overview
The chip is a fully integrated RF front-end able to down-convert the GPS L1 signal from 1575.42MHz to 4.092MHz. The IF signal is converted by a two bit ADC. Sign (SIGN), Magnitude (MAG) and the 16.368MHz sampling clock (GPS_CLK) are provided to the baseband.
STA5620 Key Features
- Low IF architecture (fIF = 4fO)
- Minimum external ponents
- 6 Pins description
- 7 Functional description
- 9 IF section
- 9 Variable gain amplifiers
- 9 A/D converter
- 9 PLL synthesizer and VCO
- 10 Crystal oscillator
- 10 Output buffers