Direct Connect CMOS-based Antenna Switches
Tue, 11/23/2004 - 11:16am
Peregrine Semiconductor unveils two CMOS-based antenna switches that tie directly to the antenna.
The first device is a Flip-Chip SP4T GSM Antenna Switch. The PE4261 RF antenna switch for dual-band GSM handset applications provides antenna switch module manufacturers a low height and small footprint solution by implementing flip-chip packaging. The use of advanced packaging technology reduces the PCB area by a factor of nine when compared to conventional wire bonding. The 50W, PE4261 complements the PE4263 RF switch, detailed below. It offer unprecedented features, including: two-pin CMOS logic control inputs; low TX insertion loss of 0.55 dB at 900 MHz and 0.65 dB at 1.9 GHz; high Isolation of 45 dB at 900 MHz and 40 dB at 1.9 GHz; low harmonics (2fo = 85 dBc and 3fo = 72 dBc at 35 dBm input power); 1500 V HBM ESD tolerance at all ports; an integrated CMOS decoder/driver and RX SAW over voltage protection circuit. The device offers linear operation from 100 to 3000 MHz at 2.6 V with fast switch settling time. Further, the blocking capacitors typically found on pHEMT switches with positive control logic are not required for any UltraCMOS-based device. The PE4261 is slated for high-volume production in multiple facilities.
Peregrine Semiconductor's PE4263 RF Antenna Switch provides a unique, high-performance solution to the quad-band GSM handset Antenna Switch Module (ASM) market by offering high power at 41 dBm P1dB; high linearity of 65 dBm IP3; and monolithic integration of key elements including a control logic decoder and driver. This high-power device, developed on the Company's UltraCMOS process technology, advances the cellular phone industry past traditional roadblocks in performance and size, enabling new roadmaps to be drawn for next generation antenna switch module designs. This CMOS-based IC can be directly connected to the antenna of a GSM handset. Early designs incorporating the PE4263 have been validated and production is ramping with global cellular handset market-leaders. Peregrine's 50W PE4263 die provides superior performance, lower insertion loss, smaller footprint and higher integration to alternative pin-diode or pHEMT-based designs. This innovative 2.6V RF switch operates from 100 to 3000 MHz and provides many extraordinary features, including 1500 V ESD tolerance at all ports; no blocking capacitors; 45 dB of isolation; low insertion loss of 0.55 dB at 915 MHz; and fast switch settling time. Both devices are slated for high-volume production in multiple facilities. The PE4263 is priced at $0.60 ea. (10K units), and is available in die form (1.24mm x 1.2mm). The 4261 is priced at $0.52 ea. (10K units). Both are available from Peregrine and its global distribution partner, Richardson Electronics. Peregrine Semiconductor Corporation