Product category:
Communications ICs (Wireless)
News Release from: Maxim Integrated Products | Subject: MAX9995
Edited by the Electronicstalk Editorial
Team on 30 September 2004
Mixer integrates more for 2.5 and 3G
basestations
The MAX9995 is billed as the industry's highest performance, fully integrated, dual SiGe mixer.
The MAX9995 is billed as the industry's highest performance, fully integrated, dual SiGe mixer Designed specifically for 2.5G and 3G wireless-infrastructure applications, the MAX9995 delivers an unparalleled combination of linearity, noise performance, and component integration
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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This single device provides two independent down conversion channels, each with an third-order intercept of 25.6dBm, a conversion gain of 6.2dB, and an impressively low noise figure of 9.7dB.
In addition, the MAX9995's superb 2RF-2LO performance is an industry best at 66dBc for an RF level of -10dBm, and 61dBc for an RF level of -5dBm.
The MAX9995 is ideal for 1700 to 2200MHz WCDMA/UMTS, DCS/PCS/Edge, cdma2000 and TDMA basestation applications where high linearity and low noise figure are critical for enhanced receiver sensitivity and blocker immunity.
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The device offers an exceptionally wide 40 to 350MHz IF frequency range with a 1400 to 2000MHz low-side local oscillator injection range.
Optimised for high-side local oscillator injection, the MAX9995A also supports a 1900 to 2400MHz local oscillator frequency range.
As a complete SiGe down convertor, the MAX9995 integrates two state-of-the-art mixer cores, four amplifiers, three baluns, a local oscillator switch and splitter, plus dozens of discrete components.
Through this integration, the total board space used by the mixer is reduced by a factor of two, and the discrete part count is reduced by 45%.
Because the device provides more than 6dB of conversion gain, the designer can eliminate a complete IF amplifier stage within the receiver lineup.
The MAX9995's outstanding 2RF-2LO performance can also ease the filtering requirements of close-in harmonics, leading to simpler and more cost-effective filter designs.
Frequency hopping is supported with the integrated SPDT LO switch with switching speeds faster than 50ns and better than 50dB of isolation between the local oscillators.
The onboard, 0dBm drive local oscillator buffer provides +/-3dB drive-variance control, yielding stable gain, NF and IIP3 performance over temperature, supply, and input power.
The device has an excellent gain spread of +/-0.5dB from nominal at room temperature and +/-0.75dB over the extended temperature range of -40 to +85C.
IIP3 spread is similarly impressive at +/-0.4dB over temperature.
Channel-to-channel isolation is specified at 44dB.
The MAX9995 comes in a compact 6 x 6mm, 36-pin, thin QFN.
Lead-free packaging is also available.
Prices start at $9.96 (1000-up, FOB USA).
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