TQ5131

WIRELESS COMMUNICATIONS DIVISION TQ5131 RF IN VDD DATA SHEET GND LO IN Mode Select/ LO Input IFA Gain Select AMP's IF Out GIC 3V Cellular Band CDMA/AMPS RFA/Mixer IC CDMA IF IF Out Out IF Out Features Small size: SOT23-8 Single 3V operation Product Description The TQ5131 is a 3V, RFA/Mixer IC designed specifically for Cellular band CDMA/AMPS applications. It’s RF performance meets the requirements of products designed to the IS-95 and AMPS standards. The TQ5131 is designed to be used with the TQ3131 (CDMA/AMPS LNA) which provides a complete CDMA receiver for 800MHz dual-mode phones. The RFA/Mixer incorporates on-chip switches which determine CDMA, AMPS and bypass mode select. When used with the TQ3131 (CDMA/AMPS LNA), four gain steps are available. The RF input port is internally matched to 50 Ω, greatly simplifying the design and keeping the number of external components to a minimum. The TQ5131 achieves good RF performance with low current consumption, supporting long standby times in portable applications. Coupled with the very small SOT23-8 package, the part is ideally suited for Cellular band mobile phones. Electrical Specifications1 Parameter Frequency Gain Noise Figure Input 3rd Order Intercept DC supply Current Min Typ 881 15.0 4.5 2.5 15.0 Max Units MHz dB dB dBm mA Low-current operation Gain Select Mode Select High IP3 performance Few external components Applications IS-95 CDMA Mobile Phones AMPS Mobile Phones Dual Mode CDMA Cellular application Note 1...