RF2461

Preliminary RF2461 CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHZ DOWNCONVERTER 8 Typical Applications CDMA/FM Cellular Systems Supports Dual-Mode AMPS/CDMA Supports Dual-Mode TACS/JCDMA General Purpose Downconverter Commercial and Consumer Systems Portable Battery-Powered Equipment Product Description The RF2461 is a receiver front-end designed for the receive section of dual-mode CDMA/FM cellular applications. It is designed to amplify and downconvert RF signals, while providing 30dB of stepped gain control range. Features include digital control of LNA gain, mixer gain, and power down mode. Another feature of the chip is adjustable IIP3 of the LNA and mixer using an off-chip current setting resistor. Noise figure, IP3, and other specs are designed to be compatible with the IS-98B interim standard for CDMA cellular communications. The IC is manufactured on an advanced Silicon Germanium HBT process and is in a 4mmx4mm, 20-pin, leadless chip carrier. 1.00 0.90 0.60 0.24 typ 4.00 sq. 4 PLCS 0.65 0.30 3 0.20 2.10 sq. 12° MAX 0.05 Dimensions in mm. 0.75 0.50 0.50 Note orientation of package. 0.23 0.13 4 PLCS NOTES: 1 Shaded lead is Pin 1. 2 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. 8 FRONT-ENDS 3 Dimension applies to plated terminal: to be measured between 0.02 mm and 0.25 mm from terminal end. 4 Package Warpage: 0.05 mm max. 5 Die Thickness Allowable: 0.305...