500 MHz TO 1700 MHz Balanced Mixer, LO Buffer and RF Balun
The ADL5367 uses a highly linear, doubly balanced passive mixer core along with integrated RF and LO balancing circuitry to allow for single-ended operation. The ADL5367 incorporates an RF balun, allowing optimal performance over a 500 MHz to 1700 MHz RF input frequency range. Performance is optimized for RF frequencies from 500 MHz to 1200 MHz using a high-side LO and for RF frequencies from 900 MHz to 1700 MHz using a low-side LO. 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 loss of 7.7 dB and can be used with a wide range of output impedances.
The ADL5367 provides two switched LO paths that can be used in TDD applications where it is desirable to rapidly switch 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 ADL5367 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 (<200 μA) the circuit when desired.
The ADL5367 is fabricated using a BiCMOS high performance IC process. The device is available in a 5 mm × 5 mm, 20-lead LFCSP and operates over a −40°C to +85°C temperature range. An evaluation board is also available.
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
ADL5367-EVALZ is a fully populated, 4-layer, Rogers 3003-based evaluation board. It requires a 5 V/97 mA or 3.3 V/56 mA power supply for normal operation. The power supply should be connected to the clip leads labeled VPOS and GND. All signal ports are populated with edge-mounted SMA connectors. RF-IN is the input port for down-converting evaluation, and the output port for up-converting evaluation. LO1_IN and LO2_IN are input ports for local oscillators. LO1_IN is enabled when the LOSEL clip lead is logic low. LO2_IN is enabled when LOSEL is pulled to logic high. IF1-OUT is the output port for up-converting evaluation, and the input port for up-converting evaluation. Power down feature is available for power supply at or under 3.6 V.
Recommended RF/IF Differential Amplifiers
- For ultralow distortion, pin strappable gain adjust , we recommend the ADL5561 .
- For adjustable gain with external resistor , we recommend the AD8351 .
- For ultralow distortion and adjustable gain with external resistor , we recommend the AD8352 .
- For a differential input/output IF VGA , we recommend the AD8370, AD8375 or the ADL5336 .
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