Analog Devices Inc./Maxim Integrated

The LTC5549 is a general purpose passive doublebalanced mixer that can be used for upconversion or downconversion. The RF port is designed for the 2GHz to 14GHz band and the IF port is optimized for 500MHz to 6GHz operation. An integrated LO buffer amplifier supports LO frequencies from 1GHz to 12GHz, requiring only 0dBm LO power. The LTC5549 delivers high IIP3 and input P1dB with low power consumption.An internal LO frequency doubler can be enabled by a CMOS-compatible digital control pin, allowing operation with a lower, one-half LO input frequency. This allows the mixer’s LO port to be used with existing synthesizers, such as the LTC6946 and LTC6948 family.The LTC5549’s high level of integration minimizes the total solution cost, board space and system level variation with its 2mm × 3mm package size.ApplicationsMicrowave TransceiversWireless BackhaulPoint-to-Point MicrowavePhased-Array AntennasC, X and Ku Band RADARTest EquipmentSatellite MODEMs

The LTC5552 is a high performance, microwave double balanced passive mixer that can be used for frequency upconversion or downconversion. The device is similar to the LTC5553, but with a broadband, differential DC to 6GHz IF port. The LTC5552 is recommended for applications where the IF frequency range extends below 500MHz. For applications where the IF frequency is always above 500MHz, the LTC5553 is recommended, since it includes an integrated IF balun.The mixer and integrated RF balun are optimized to cover the 3GHz to 20GHz RF frequency range. The integrated LO amplifier is optimized for the 1GHz to 20GHz frequency range, requiring only 0dBm drive.The part delivers high IIP3 and P1dB, low LO leakage and high integration in a small package.Applications5G Broadband Wireless AccessMicrowave TransceiversWireless BackhaulPoint-to-Point MicrowavePhased-Array AntennasC, X and Ku Band RADARTest Equipment n Satellite Modems

The LTC5553 is a high performance, microwave double balanced passive mixer that can be used for frequency upconversion or downconversion.The LTC5553’s mixer and integrated RF balun are optimized to cover the 3GHz to 20GHz RF frequency range. The device includes an integrated LO amplifier optimized for the 1GHz to 20GHz frequency range, requiring only 0dBm drive. The integrated IF balun is optimized to cover a very wide, 500MHz to 9GHz, frequency range while providing a single-ended 50Ω interface.The LTC5553 delivers exceptionally high IIP3 and P1dB, in addition to low LO to RF and LO to IF leakages. The part also offers a high level of integration in a small package.Applications5G Broadband Wireless AccessMicrowave TransceiversWireless BackhaulPoint-to-Point MicrowavePhased-Array AntennasC, X and Ku Band RADARTest EquipmentSatellite Modems

The LTC5555 programmable gain downconverting mixer is ideal for receivers that require precise gain setting. The IC incorporates an active mixer and a digital IF VGA with 15.5dB gain control range. The IF gain is programmed in 0.5dB steps through the SPI or parallel interface.An enable pin allows for fast turn-on and shutdown. A reduced power mode is also available.An integrated RF transformer provides a single-ended 50Ω input. The differential LO input is designed for single-ended or differential drive. The differential IF output simplifies the interface to differential IF filters and amplifiers. The mixer is optimized for the 3GHz to 7GHz RF frequency range but may be used down to 1.5GHz with degraded performance.Applications3.6GHz, 4.8GHz and 5.8GHz Band Wireless Infrastructure ReceiversWireless RepeatersMilitary Radar and Communications ReceiversTest and Measurement EquipmentSoftware-Defined Radios

The LTC5564 is a precision, RF power detector for applications in the 600MHz to 15GHz frequency range. The LTC5564 operates with input power levels from –24dBm to 16dBm.A temperature compensated Schottky diode peak detector, gain-selectable operational amplifier, and fast comparator are combined in a small 16-lead 3mm × 3mm QFN package.The RF input signal is peak detected and then sensed by both a comparator and amplifier. The comparator provides a 9ns response time to input levels exceeding VREFalong with a latch enable/disable function. The gain selectable operational amplifier provides a 350V/μs slew rate and 75MHz of demodulation bandwidth to the analog output.VOUTADJand VREFpins allow for the adjustment of VOUToffset and VCOMPswitch point voltages, respectively.ApplicationsRF Signal Presence Detectors for: 802.11a, 802.11b, 802.11g, 802.15, Optical Data Links, Wireless Data Modems, Wireless and Cable Infrastructure5.8GHz ISM Band RadiosMMDS Microwave LinksPA Power Supply Envelope Tracking ControlFast AlarmRF Power MonitorEnvelope DetectorUltra-Wideband RadioRadar Detector

The LTC5566 dual programmable gain downconverting mixer is ideal for diversity and MIMO receivers that require precise gain setting. Each channel incorporates an active mixer and a digital IF VGA with 15.5dB gain control range. The IF gain of each channel is programmed in 0.5dB steps through the SPI.Programmable RF input tuning via the SPI or parallel control lines makes the device attractive for wideband radio applications. Furthermore, a reduced power mode is available, programmed through the SPI.Integrated RF transformers provide single-ended 50Ω inputs. The differential LO input is designed for single-ended or differential drive. The differential IF output simplifies the interface to differential IF filters and amplifiers. The mixers are optimized for use up to 5GHz but may be used up to 6GHz with degraded performance.Applications4G and 5G MIMO ReceiversDiversity ReceiversDistributed Antenna Systems (DAS)Network Test/Monitoring EquipmentSoftware-Defined Radios

The LTC5567 is optimized for RF downconverting mixer applications that require wide IF bandwidth. The part is also a pin-compatible upgrade to the LT5557 active mixer, offering higher linearity and 1dB compression, wider bandwidth, and lower output spurious levels. Integrated RF and LO transformers and LO buffer amplifiers allow a very compact solution.The RF input is 50Ω matched from 1.4GHz to 3GHz, and easily matched for higher or lower RF frequencies with simple external matching. The LO input is 50Ω matched from 1GHz to 4GHz, even when the IC is disabled. The LO input is easily matched for higher or lower frequencies, as low as 300MHz, with simple external matching. The low capacitance differential IF output is usable up to 2.5GHz.ApplicationsWireless Infrastructure ReceiversDPD Observation ReceiversCATV Infrastructure