RF2948B

RF2948B 0 Typical Applications IEEE 802.11b WLANs Wireless Residential Gateways Secure Communication Links Product Description The RF2948B is a monolithic integrated circuit specifically designed for direct-sequence spread-spectrum systems operating in the 2.4GHz ISM band. The part includes: a direct conversion from IF receiver with variable gain control; quadrature demodulator; I/Q baseband amplifiers; and, on-chip programmable baseband filters. For the transmit side, a QPSK modulator and upconverter are provided. The design reuses the IF SAW filter for transmit and receive reducing the number of SAW filters required. Two-cell or regulated three-cell (3.6V maximum) battery applications are supported by the part. The part is also designed to be part of a 2.4GHz chipset consisting of the RF2494 LNA/Mixer, one of the many RFMD high-efficiency GaAs HBT PA’s and the RF3000 Baseband Processor. Optimum Technology Matching® Applied 2.4GHz SPREAD-SPECTRUM TRANSCEIVER High Speed Digital Links Wireless Security Digital Cordless Telephones IG N S -A5.00 SQ. 2.50 TYP. 3 2 PLCS 0.10 C A 0.05 C 0.90 0.85 0.70 0.65 2 PLCS 0.10 C B 0.05 0.00 2 PLCS 0.10 C B 12° MAX E S -B-C2.37 TYP. 4.75 SQ. 0.10 M C A B 0.60 0.24 TYP. 0.30 0.18 2 SEATING PLANE 2 PLCS 0.10 C A D Shaded lead is pin 1. Pin 1 ID R.20 Dimensions in mm. W 3.45 SQ. 3.15 0.50 0.30 N E 0.50 Package Style: QFN, 32-Pin, 5x5 9Si Bi-CMOS InGaP/HBT RX VGC VREF 1 VCC2 Si BJT GaAs HBT SiGe HBT GaN HEMT ...