TQ5638 KPCS CDMA/GPS 2090 ~ 1620 MHz Dual Mode Receiver

TQ5638 is a receiver that supports KPCS CDMA/GPS working mode. Its electrical characteristics meet the requirements of TIA/EIA 98-C wireless communication standards and can be used in mobile phones based on KPCS frequency band/A-GPS CDMA (IS-95/98).

The main technical features are as follows: 

・L0 frequency range: KPCS frequency band low end is 1620～1650 MHz, high end is 2060～2090 MHz; AGPS frequency band low end is 1355.04 MHz, high end is l795.80 MHz; 

・IF range is 80 to 230 MHz (PCS and GPS bands); 

・The power supply voltage is 2.7 to 3.3 V; 

・The power supply current is 20.5 mA (high-gain mode), and the current in low-power mode is 10 μA; 

・LNA has adjustable IP3 to minimize cross-modulation and intermodulation; 

・The mixer provides differential IF output (for GPS mode, single-ended or differential IF output is provided); 

・Excellent linearity and low noise figure.

TQ5638 Typical Application Circuit