Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 12, 2008 Model LT5579 has frequency range covering .9 GHz cellular bands as well as 2.6 and 3.5 GHz WiMAX frequency bands. At 2.14 GHz, it offers 27.3 dBm output IP3 linearity and 9.9 dB noise figure. It can be driven with signal levels at as much as -5 dBm without elevating its output noise floor above -158 dBm/Hz. Suited for wireless transmitters in basestations, double-balanced mixer operates from 3.3 V supply and features quiescent supply current of 226 mA.

Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 07, 2007 Consuming 270 mW from 3.3 V supply, downconverting Model LT5557 incorporates double-balanced active mixer core technology with on-chip LO buffer. It elevates receiver dynamic range performance while extending bandwidth capability to cover 3G and WiMAX basestation frequencies to 3.8 GHz. Housed in 16-lead, 4 x 4 mm QFN surface mount package, device offers 24.7 dBm IIP3, noise figure of 11.7 dB, and 2.9 dB of gain at 1.95 GHz. Typical LO-to-RF is better than 42 dBc at 1.95 GHz.

Linear Technology Corp.
Milpitas, CA 95035-7417
May 06, 2005 Model LT5527 high linearity, active downconverting RF mixer simplifies design of 3G cellular basestations. At 1.9 GHz, unit offers IIP3 linearity of 23.5 dBm, conversion gain of 2.3 dB, and noise figure of 12.5 dB. Local oscillator and RF inputs operate single-ended and have built-in 50 ohm impedance, requiring few external matching components. Low-noise LO buffer allows operation at -3 dBm LO drive level, reducing need for external filtering.

Linear Technology Corp.
Milpitas, CA 95035-7417
Feb 01, 2005 With IIP3 (Input Third-Order Intercept) of 16.5 dBm @ 900 MHz and noise figure of 11 dB, LT5526 is suited for use as downconverting or upconverting mixer and operates over bandwidth from 100 kHz to 2 GHz. Model LT5525 features on-chip RF input transformer and offers internal 50 ohm impedance matching at RF and LO (Local Oscillator) inputs, which can be driven single-ended. It features IIP3 of 21 dBm @ 900 MHz and operates over bandwidth from 0.8–2.5 GHz.

Linear Technology Corp.
Milpitas, CA 95035-7417
Apr 14, 2004 Model LT5519 operates over 0.7–1.4 GHz range, while Model LT5520 covers 1.3–2.3 GHz frequency bands without external matching components. On-chip RF transformer enables single-ended output operation for both units. RF port is internally 50 Ohm-matched over full operating frequency range. Built-in LO amplifiers eliminate need for external LO buffers. Operating from 5 V supply, mixers typically draw 60 mA. They come in 4 x 4 mm, 16-lead plastic QFN surface-mount package.

Linear Technology Corp.
Milpitas, CA 95035-7417
Nov 10, 2003 LT5522 active downconverting mixer has RF input with on-chip transformer that is 50 ohm matched over wide frequency range. RF input and Local Oscillator (LO) ports can be driven differentially or single-ended with minimum external impedance matching components. Mixer provides third-order intercept performance of 25 dBm @ 900 MHz and 21.5 dBm @ 1.9 GHz; draws 56 mA supply current at 5 V; and comes in 16-lead, 4 mm² QFN package. It operates with RF input from 600 MHz to 2.7 GHz.