MAX19790

MAX19790 19-5165; Rev 0; 3/10 250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator General Description The MAX19790 dual, general-purpose analog voltage variable attenuator (VVA) is designed to interface with 50I systems operating in the 250MHz to 4000MHz frequency range. Each attenuator includes a control circuit that provides 22dB of attenuation range with a linear control slope of 10dB/V. Both attenuators share a common analog control and can be cascaded together to yield 44dB of total dynamic range, with a combined linear control slope of 20dB/V. The IC is a monolithic device designed on one of Maxim’s proprietary SiGe BiCMOS processes. The device operates from a single +5.0V supply and is available in a compact, 36-pin thin QFN package (6mm x 6mm x 0.8mm) with an exposed pad. Electrical performance is guaranteed over the extended -40° to +85°C temperature range. Applications Broadband System Applications, Including Wireless Infrastructure Digital and SpreadSpectrum Communication Systems WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX™, cdma2000®, GSM/EDGE, and MMDS Base Stations VSAT/Satellite Modems Microwave Terrestrial Links Lineup Gain Trim Temperature Compensation Circuits Automatic Level Control (ALC) Transmitter Gain Control Receiver Gain Control General Test Equipment Features S 250MHz to 4000MHz RF Frequency Range S Integrates Two Analog Attenuators in One Monolithic Device S Flexible Attenuation-Control Ranges 22dB (per Attenuator) 44dB (Both Attenuators Cascade...