厂商：Freescale
类别：16位单片机
厂商：Murata
类别：声像机器用滤波器
厂商：CooperBussmann
类别：配件
厂商：Linear
类别：精准放大器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Littelfuse
类别：晶闸管
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详细描述The RF7178 is a quad-band (GSM850/EGSM900/DCS1800/PCS1900) GSM/GPRS Class 12 compliant Transmit Module with integrated Receive all SAW Filters S/B Caps. This transmit module is the next step of integration to include a multi function CMOS controller, GaAs HBT power amplifier, pHEMT front-end antenna switch and RX SAW filters all in one package for a true single front end solution. The four RX ports are 150Ω impedance and provide a differential output to allow flexibility when interfacing with various transceiver configurations. The RF7178 continues to builds upon RFMD’s leading patented PowerStar® Architecture to include such features as Power Flattening Circuit, VRAMP Filtering, and VBATT Tracking. The highly integrated transmit module simplifies the phone design by eliminating the need for omplicated control loop design, output RF spectrum, (ORFS) optimization, harmonic filtering, and component matching, all of which combine to provide best in class RF performance, solution size, and ease of implementation for cellular phone systems. The TX RF ports are 50Ω matched and the antenna port includes ESD protection circuitry which meets the stringent 8kV industry standards requiring no additional components. All of these eliminated factors help to improve the customer’s product time to market.特点Single Module Placement (SMPL)Proven PowerStar? ArchitectureIntegrated RX SAW FiltersIntegrated Power Flattening CircuitIntegrated VRAMP FilterNo External Routing Simplifies LayoutDifferential RX Ports Allow Layout FlexibilityRobust 8kV ESD Protection at Antenna PortVBATT Tracking