Product category: Analogue and Mixed Signal ICs
News Release from: Linear Technology Corp | Subject: LT5525 and LT5526
Edited by the Electronicstalk Editorial Team on 03 May 2005
RF mixers cut basestation power drain
Two new RF active mixers combine low power and high performance, making them ideal for wireless infrastructure transceiver and portable radio applications.
Two new RF active mixers from Linear Technology feature low power and high performance, making them ideal for wireless infrastructure transceiver and portable radio applications The LT5525 and LT5526 consume only one-half the power of other high performance mixers, while delivering excellent linearity to meet the requirements of cellular and wireless repeaters, pico-basestations, point-to-point wireless links and mobile radios
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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RF mixers take transformers onboard
Linear Technology has released two new high linearity up-converting RF active mixers with integrated RF transformers.
The LT5526 features an IIP3 (input third-order intercept) of 16.5dBm at 900MHz, and a noise figure of 11dB.
This performance is complemented by a conversion gain of 0.6dB.
Moreover, the LT5526 requires only -5dBm LO (local oscillator) drive, and its port-to-port LO leakage is exceptionally low at -65dBm, reducing external filtering requirements.
The LT5526 has fully differential inputs and outputs, and operates over a very wide bandwidth ranging from 100kHz to 2GHz.
The device has the capability for use as either a downconverting mixer or as an upconverting mixer in many applications.
The LT5525 features an on-chip RF input transformer, and offers internal 50ohm impedance matching at both the RF and the LO inputs.
These inputs can be driven single-ended, without external impedance matching components, thus facilitating ease-of-use and reducing costs.
The LT5525's IIP3 is 21dBm IIP3 at 900MHz, and 17.6dBm at 1.9GHz.
At 900MHz, the noise figure is 14dB and the conversion gain is -2.6dB.
The LT5525 requires only -5dBm LO drive, and offers high port-to-port isolation.
Both the LT5525 and LT5526 operate from a single supply voltage, ranging from 3.6 to 5.3V.
Typical operating current is 28mA.
The devices can operate at a supply voltage as low as 3V with reduced linearity performance.
These devices are offered in 6-pin 4 x 4mm surface mount QFN packages.
The LT5526 is priced at $3.40 and the LT5525 is $3.80 in 1000-piece quantities.
The products are available from stock. Request a free brochure from Linear Technology Corp ...
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