MGA-725M4 Datasheet | Avago Technologies

Description Avago Technologies’s ­ MGA­­-725M4 is an economical, easy-to-use Ga As MMIC Low Noise Amplifier (LNA), which is designed for an adaptive CDMA receiver LNA and adaptive CDMA transmit driver amplifier. The MGA-725M4 features a typical noise figure of 1.4 d B and 14.4 d B associated gain from a single stage, ­feedback FET amplifier. The output is internally matched to 50Ω. The input is optimally internally matched for lowest noise figure into 50Ω. The input may be additionally externally matched for low VSWR through the addition of a single series inductor. When set into the bypass mode, both input and output are internally matched to 50Ω. The MGA-725M4 offers an ­ integrated solution of LNA with adjustable IIP3. The IIP3 can be fixed to a ­desired current level for the receiver’s linearity requirements. The LNA has a bypass switch function, which sets the current to zero and provides low insertion loss. The bypass mode also boosts dynamic range when high level signal is being received. For the CDMA driver amplifier applications, the MGA-725M4 provides suitable gain and linearity to meet the ACPR requirement when the handset transmits the highest power. When transmitting lower power, the MGA-725M4 can be bypassed, saving the drawing current. The MGA-725M4 is a Ga As MMIC, processed on Avago’s cost effective PHEMT (Pseudomorphic High Electron Mobility Transistor). It is housed in the Mini Pak 1412 package. It is part of the Avago Technologies CDMAdvantage RF chipset. Simplified Schematic Features - Operating frequency: 0.1 GHz ~ 6.0 GHz - Noise figure: 1.2 d B at 800 MHz 1.4 d B at 1900 MHz - Gain: 17.5 d B at 800 MHz 15.7 d B at 1900 MHz - Bypass switch on chip Loss = typ IIP3 = +10 1.6 d B d Bm (Id < µA) - Adjustable Input IP3: +2 to +14.7 d Bm - Miniature package: 1.4 mm x 1.2 mm 2.7 V to 5.0 V operation Applications - CDMA (IS-95, J-STD-008) Receiver LNA - Transmit Driver Amp - TDMA (IS-136) handsets Mini Pak 1.4 mm x 1.2 mm Package Ax Pin...