RF2475

Preliminary RF2475 DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER 8 Typical Applications TDMA Handsets Product Description The RF2475 includes two downconverting mixers and associated LNAs. It is designed for IS136 handset applications in the cellular 800MHz and PCS 1900MHz bands. Each LNA has a gain bypass mode, which is controlled by the gain select pin. The device internally ties the two mixer outputs together, providing interface to a single IF SAW filter. A frequency doubler is provided to supply the LO signal to the PCS mixer and feeds the PCS transmit LO output buffer. A cellular LO output buffer is also included. The device is fabricated using Gallium Arsenide HBT technology and is packaged in a 28-pin, 5mmx5mm leadless package. 1.00 0.85 0.80 0.65 Typ 0.60 0.24 5.00 sq. 2.50 Typ. 0.65 0.30 4 PLCS 2 0.30 0.18 2.85 sq. 2.55 12° MAX 0.05 0.01 0.75 0.50 0.50 0.23 0.13 4 PLCS NOTES: 1 Shaded Pin is Lead 1. 2 Dimension applies to plated terminal: to be measured between 0.02 mm and 0.25 mm from terminal end. 3 Pin 1 identifier must exist on top surface of package by identification mark or feature on the package body. Exact shape and size is optional. 4 Package Warpage: 0.05 mm max. 5 Die Thickness Allowable: 0.305 mm max. 8 FRONT-ENDS Optimum Technology Matching® Applied Si BJT Si Bi-CMOS LNA OUT19 ü GND Package Style: LCC, 28-Pin, 5x5 GaAs HBT SiGe MXR VCC8 MXR IN19 GaAs MESFET Features VCC TX8 TX LO8 GND Complete Dual-Band Receiver Fro...