DESCRIPTION
The LTC®6603 is a dual, matched, programmable lowpass fi lter for communications receivers and transmitters. The selectivity of the LTC6603, combined with its linear phase, phase matching and dynamic range, make it suitable for fi ltering in many communications systems. With 1.5° phase matching between channels, the LTC6603 can be used in applications requiring pairs of matched filters, such as transceiver I and Q channels. Furthermore, the differential inputs and outputs provide a simple interface for most communications systems.

FEATURES
 Guaranteed Phase and Gain Matching Specs
 Programmable BW Up to 2.5MHz
 Programmable Gain (0dB/6dB/12dB/24dB)
 9th Order Linear Phase Response
 Differential, Rail-to-Rail Inputs and Outputs
 Low Noise: –145dBm/Hz (Input Referred)
 Low Distortion: –75dBc at 200kHz
 Simple Pin Programming or SPI Interface
 Set the Max Speed/Power with an External R
 Operates from 2.7V to 3.6V
 Input Range from 0V to 5.5V
 4mm × 4mm QFN Package

APPLICATIONS
 Small/Low Cost Basestations:
   IDEN, PHS, TD-SCDMA, CDMA2000, WCDMA, UMTS
 Low Cost Repeaters, Radio Links, and Modems
 802.11x Receivers
 JTRS