ADA4303-2

www.DataSheet4U.com 1:2 Single-Ended, Low Cost Active RF Splitter ADA4303-2 FEATURES Ideal for CATV applications Excellent frequency response 1.7 GHz, −3 dB bandwidth 1 dB flatness to 1.2 GHz Low noise figure: 4.4 dB Low distortion Composite second order (CSO): −62 dBc Composite triple beat (CTB): −72 dBc 1 dB compression point of 8.5 dBm 3 dB of gain per output channel 24 dB isolation between output channels 75 Ω input and outputs Small package size 12-lead, 3 mm × 3 mm lead frame chip scale package FUNCTIONAL BLOCK DIAGRAM 5V 5V 0.1µF 0.1µF 1µH VCC IL VO1 VIN 0.01µF ADA4303-2 VO2 0.01µF 0.01µF 249Ω GND 249Ω APPLICATIONS Set-top boxes Home gateways CATV distribution systems Splitter modules Digital cable ready (DCR) TVs Figure 1. GENERAL DESCRIPTION The ADA4303-2 is a 75 Ω, two-output active splitter for use in applications where a lossless signal split is required. Typical applications include multituner digital set-top boxes, cable splitter modules, multituner/digital cable ready (DCR) televisions, and home gateways where traditional solutions require discrete passive splitter modules with separate fixed gain amplifiers. The ADA4303-2 is a low cost alternative that simplifies designs and improves system performance by integrating a signal splitter element and a gain block into a single IC. The ADA4303-2 is available in a 12-lead chip scale package (LFCSP_VQ) and operates in the extended industrial temperature range of −40°C to +85°C. 4 3 2 1 0 GAIN (dB) TA = ...