High Linearity, Low Power Downconverting Mixer

The LT5526 is a low power broadband mixer optimized for high linearity applications such as point-to-point data transmission, cable infrastructure and wireless infrastructure systems. The device includes an internally matched high speed LO amplifier driving a double-balanced active mixer core. An integrated RF buffer amplifier provides excellent LO-RF isolation. The RF and IF ports can be easily matched across a broad range of frequencies for use in a wide variety of applications.

The LT5526 offers a high performance alternative to passive mixers. Unlike passive mixers which have conversion loss and require high LO drive levels, the LT5526 delivers conversion gain at significantly lower LO input levels and is much less sensitive to LO power level variations.

Applications

* Point-to-Point Data Communication Systems

* Wireless Infrastructure

* Cable Downlink Infrastructure

* High Linearity Receiver Applications

* Operation up to 2GHz

* Broadband RF, LO and IF Operation

* High Input IP3: +16.5dBm at 900MHz

* Typical Conversion Gain: 0.6dB at 900MHz

* SSB Noise Figure: 11dB at 900MHz

* On-Chip 50Ω LO Match

* Integrated LO Buffer: –5dBm Drive Level

* High LO-RF and LO-IF Isolation

* Low Supply Current: 28mA Typ

* Enable Function

* Single 5V Supply

* 16-Lead QFN (4mm × 4mm) Package