ADL5354是高度線性雙平衡（RF和LO平衡）RF混頻器，輸入頻率從2300 MHz 到2900 MHz.ADL5354混頻器工作在2300至2900MHz 頻率范圍，提供極高的集成度，內(nèi)置射頻巴倫、用于雙通道本振頻率應用的本振開關(guān)、本振驅(qū)動器和集成式中頻放大器。巴倫的集成使射頻信號可被單端驅(qū)動，集成式中頻放大器可以提供必要的增益，因而無需外部增益級電路。ADL5354可提供的IP3和噪聲指數(shù)性能，因而可以實現(xiàn)優(yōu)異的無雜散動態(tài)范圍。這些混頻器還能提供強干擾信號下出色的噪聲指數(shù)性能。高的無雜散動態(tài)范圍和阻塞器性能下的低噪聲指數(shù)使得這些混頻器可用于接收機在有大干擾信號情況下工作的場合。5V（標稱值）的 ADL5354也能在功耗敏感應用中的3.3V 電源電壓下工作。

　　雙通道ADL5354混頻器工作在2300至2900MHz頻率范圍，提供極高的集成度，內(nèi)置射頻巴倫、用于雙通道本振頻率應用的本振開關(guān)、本振驅(qū)動器和集成式中頻放大器。巴倫的集成使射頻信號可被單端驅(qū)動，集成式中頻放大器可以提供必要的增益，因而無需外部增益級電路。

　　The ADL5354 uses a highly linear, doubly balanced, passive mixer core along with integrated RF and local oscillator （LO） balancing circuitry to allow single-ended operation. The ADL5354 incorporates the RF baluns, allowing for optimal performance over a 2300 MHz to 2900 MHz RF input frequency range. The balanced passive mixer arrangement provides good LO-to-RF leakage, typically better than ?35 dBm, and excellent intermodulation performance. The balanced mixer core also provides extremely high input linearity, allowing the device to be used in demanding cellular applications where in-band blocking signals may otherwise result in the degradation of dynamic performance. A high linearity IF buffer amplifier follows the passive mixer core to yield a typical power conversion gain of 8.2 dB and can be used with a wide range of output impedances.

　　The ADL5354 provides two switched LO paths that can be used in TDD applications where it is desirable to ping-pong between two local oscillators. LO current can be externally set using a resistor to minimize dc current commensurate with the desired level of performance. For low voltage applications, the ADL5354 is capable of operation at voltages down to 3.3 V with substantially reduced current. Under low voltage operation, an additional logic pin is provided to power down （<300 μA） the circuit when desired.

　　The ADL5354 is fabricated using a BiCMOS high performance IC process. The device is available in a 6 mm × 6 mm, 36-lead LFCSP and operates over a ?40℃ to +85℃ temperature range.

　　ADL5354主要特性：

　　RF frequency range of 2300 MHz to 2900 MHz

　　IF frequency range of 30 MHz to 450 MHz

　　Power conversion gain: 8 dB

　　SSB noise figure of 10 dB

　　Input IP3 of 25 dBm

　　Input P1dB of 11 dBm

　　Typical LO drive of 0 dBm

　　Single-ended, 50 Ω RF and LO input ports

　　High isolation SPDT LO input switch

　　Single-supply operation: 3.3 V to 5 V

　　Exposed paddle, 6 mm × 6 mm, 36-lead LFCSP

　　ADL5354應用：

　　Cellular base station receivers

　　Transmit observation receivers

　　Radio link downconverters

　　圖1.ADL5354功能方框圖

　　圖2.ADL5354典型應用電路圖

　　圖3.ADL5354評估板電路圖

　　ADL5354評估板元件配置表

　　圖4.ADL5354評估板頂層布局圖

　　ADL5354可提供的IP3和噪聲指數(shù)性能，因而可以實現(xiàn)優(yōu)異的無雜散動態(tài)范圍。這些混頻器還能提供強干擾信號下出色的噪聲指數(shù)性能。高的無雜散動態(tài)范圍和阻塞器性能下的低噪聲指數(shù)使得這些混頻器可用于接收機在有大干擾信號情況下工作的場合。5V（標稱值）的ADL5354也能在功耗敏感應用中的3.3V電源電壓下工作。