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