Maxim Integrated PLL Frequency Synthesizer Single 23.5MHz to 6000MHz 32-Pin TQFN EP QFN-32 Maxim None MAX2871ETJ+ Unavailable Maxim Integrated MAX2871 ultra-wideband fractional-N / integer-N PLL frequency synthesizer with integrated VCOs, capable of generating RF frequencies from 23.5MHz to 6.0GHz. Features programmable output dividers (1/2/4/8/16/32/64/128), dual differential RF outputs with programmable output power from -1dBm to +8dBm, low phase noise performance, phase frequency detector up to 140MHz, reference frequency up to 210MHz, fast lock and cycle-slip reduction, automatic/manual VCO selection, on-chip temperature sensor with 7-bit ADC, 4-wire SPI-compatible serial interface, and operation from -40°C to +85°C. Suitable for wireless infrastructure, clock generation, microwave radios, RF signal generation, and test & measurement equipment. MAX2871 Search Keywords: MAX2871, Maxim MAX2871, Analog Devices MAX2871, PLL synthesizer, RF synthesizer, fractional N synthesizer, integer N synthesizer, 6GHz frequency synthesizer, RF signal generator IC, integrated VCO synthesizer, microwave synthesizer, SPI frequency synthesizer, dual output PLL, clock generation IC, wireless infrastructure synthesizer Hashtags: #MAX2871 #MaximIntegrated #AnalogDevices #PLLSynthesizer #FrequencySynthesizer #RFSynthesizer #FractionalNPLL #IntegerNPLL #IntegratedVCO #RFSignalGenerator #MicrowaveRadio #ClockGeneration #WirelessInfrastructure #SPIInterface #TestAndMeasurement #RFDesign #RFIC #PhaseLockedLoop

Clock Generators, PLLs, Frequency Synthesizers ADF4351BCPZ LFCSP-32_L5.0-W5.0-P0.50-BL-EP3.5 LCSC Part Number: C654681 JLCPCB Part Class: Extended Part Manufactured by ADI(亚德诺)/LINEAR(凌特) Analog Devices ADF4351 wideband fractional-N and integer-N PLL frequency synthesizer with integrated voltage-controlled oscillator (VCO), generating RF output frequencies from 35MHz to 4.4GHz. Features low phase noise, programmable output divider ratios (/1, /2, /4, /8, /16, /32, /64), programmable RF output power, dual-modulus prescaler (4/5 or 8/9), analog and digital lock detect, fast lock mode, cycle slip reduction, auxiliary RF output, RF mute function, and 3-wire serial programming interface. Operates from 3.0V to 3.6V and is widely used in RF signal generators, local oscillators, SDR systems, wireless infrastructure, test equipment, microwave communications, clock generation, and laboratory instrumentation. Search Keywords: ADF4351, Analog Devices ADF4351, ADF4351BRUZ, RF synthesizer, PLL synthesizer, fractional N PLL, integer N PLL, integrated VCO, 35MHz to 4.4GHz synthesizer, RF signal generator IC, microwave frequency synthesizer, local oscillator PLL, SDR synthesizer, programmable RF generator, low phase noise synthesizer, SPI PLL synthesizer, RF clock generator Hashtags: #ADF4351 #AnalogDevices #PLL #FractionalNPLL #IntegerNPLL #FrequencySynthesizer #RFSynthesizer #IntegratedVCO #RFGenerator #SignalGenerator #LocalOscillator #MicrowaveRF #SDR #ClockGenerator #RFIC #WirelessInfrastructure #TestEquipment #LowPhaseNoise #SPIInterface #ADF4351Module

RF Amplifier IC 5G, TDD 600MHz ~ 2.8GHz 20-QFN (4x4) ## Engineering Specification ## General Description The **QPA9442TR13** is a Qorvo high-linearity RF pre-driver amplifier designed for wireless infrastructure, cellular communication systems, and high-performance RF transmit chain applications. It is intended for use in systems requiring wideband operation, strong linearity, stable gain performance, and compact surface-mount integration. The device is suitable for 5G, TDD, FDD, mobile infrastructure, massive MIMO, and general-purpose wireless designs. ## Device Identification Manufacturer Part Number: **QPA9442TR13** Manufacturer: **Qorvo** Device Category: **RF and Wireless Integrated Circuit** Device Type: **RF Amplifier** Functional Type: **High-Linearity RF Pre-Driver Amplifier** Application Class: **Wireless Infrastructure and 5G RF Front-End** ## Functional Description The device operates as a transmit-chain pre-driver amplifier, providing RF signal amplification before the final power amplification stage. It is designed to deliver high gain and high output linearity while supporting cellular-band tuning requirements. The amplifier includes shutdown control through a dedicated power-down function, allowing system-level power management in RF transmit applications. ## RF Performance Description The QPA9442TR13 supports wideband RF amplification for cellular and wireless infrastructure applications. It provides high linearity performance, strong compression-point capability, and output third-order intercept performance suitable for demanding transmit signal chains. The device is optimized for applications where signal quality, gain stability, and RF output performance are critical. ## Electrical Description The device is designed for single-supply operation and is suitable for low-voltage RF circuit designs. It requires proper RF matching, biasing, grounding, and thermal layout practices to achieve the intended performance. The part should be used according to the manufacturer’s recommended operating conditions and reference design guidance. ## Package and Mounting Description The component is supplied as a surface-mount RF integrated circuit in a compact QFN package with exposed pad construction. The package is intended for high-frequency printed circuit board layouts requiring controlled impedance routing, short RF signal paths, proper ground via placement, and effective thermal connection to the PCB ground plane. ## Protection and Control Features The amplifier includes internal RF overdrive protection and internal DC overvoltage protection. It also includes a DC power shutdown feature for power control and system-level enable or disable operation. ## Application Suitability The QPA9442TR13 is suitable for 5G base station equipment, massive MIMO radio systems, mobile infrastructure, TDD and FDD transmit systems, cellular RF front-end designs, general-purpose wireless equipment, and RF driver amplifier stages requiring high linearity and compact board-level integration. ## Design Considerations The device should be implemented with proper RF layout techniques, impedance-controlled traces, recommended matching networks, adequate grounding, and appropriate thermal management. Performance may vary depending on frequency tuning, PCB design, matching component selection, supply quality, and operating conditions. ## Hashtags #commonpartslibrary #integratedcircuit #rfamplifier #qorvo #qpa9442tr13 #qpa9442 #wirelesscomponents #rfic #semiconductor #electronicscomponents #rfdesign #wirelessinfrastructure #fiveg #tdd #fdd #massivemimo #mobileinfrastructure #preDriverAmplifier #rfpreDriver #smtcomponents #qfnpackage #pcbdesign #hardwaredesign #electronicsengineering #componentlibrary

The RFFC5072 is a highly integrated wideband RF frequency conversion IC that combines a fractional-N PLL synthesizer, low phase-noise VCO, and a high-linearity RF mixer in a single device. It is designed for wireless infrastructure, software-defined radio (SDR), test equipment, military communications, and broadband frequency conversion applications. The device can generate local oscillator (LO) frequencies from 85 MHz to 4.2 GHz and perform frequency conversion for RF signals up to 6 GHz while maintaining excellent phase noise and spurious performance. Features  85MHz to 4200MHz LO Frequency Range  Fractional-N Synthesizer with Very Low Spurious Levels  Typical Step Size 1.5Hz  Fully Integrated Low Phase Noise VCO and LO Buffers  Integrated Phase Noise • 0.18° rms at 1GHz • 0.50° rms at 3GHz  High Linearity RF Mixer(s)  30MHz to 6000MHz Mixer Frequency Range  Input IP3 +23dBm  Mixer Bias Adjustable for Low Power Operation  Full Duplex Mode (RFFC5071)  2.7V to 3.3V Power Supply  Low Current Consumption  3- or 4-Wire Serial Interface Applications  Wideband Radios  Distributed Antenna Systems  Diversity Receivers  Software Defined Radios  Frequency Band Shifters  Point-to-Point Radios  WiMax/LTE Infrastructure  Satellite Communications  Wideband Jammers #RFFC5072 #Qorvo #RFMixer #FrequencySynthesizer #PLL #VCO #WidebandRF #FrequencyConverter #SDR #WirelessInfrastructure #RFDesign #MicrowaveEngineering #Telecommunications #EmbeddedSystems #ElectronicsDesign #RFIC #SignalProcessing #HardwareEngineering