Maxim unveils dual downconverting mixers
Maxim Integrated Products
Dual downconverting mixers
Maxim has introduced the MAX19995/19995A/19997A/19999 family of high-performance, dual, downconverting mixers.
They are targeted at DCS/PCS, cdma2000, WCDMA, WCS, LTE, Wimax and MMDS wireless-infrastructure applications.
Together with the MAX19985A, these mixers provide complete downconverter systems that address all base station applications spanning the 700MHz to 4,000MHz bands.
Each monolithic device delivers a combination of linearity, noise performance and component integration.
These components provide up to 24.8dBm IIP3 linearity, up to 9dB of conversion gain, and a 2RF-2LO spurious rejection of up to 79dBc.
Noise figure values are also low, reaching down to 9dB.
Each of these parameters is critical for providing enhanced receiver sensitivity and blocker immunity.
As complete SiGe downconverters, the family integrates two mixer cores, four amplifiers, three baluns, an LO splitter and dozens of discrete components.
The devices' conversion gain permits the elimination of a complete IF amplifier stage within the receiver line-up.
The 2RF-2LO and 2LO-2RF performance can also ease the filtering requirements of close-in harmonics, leading to simpler and more cost-effective filter designs.
These devices reduce downconverter system size by a factor of 2, and discrete part count by 45 per cent.
The entire family also supports two 'green' power modes in which linearity performance can be traded off for reduced power consumption.
In 5V mode, the bias currents that drive the on-chip LO buffer and IF amplifier stages can be reduced by as much as 33 per cent.
Using this mode of operation, a 20 per cent reduction in power results in only a 3dB reduction in IIP3 linearity.
Similarly, using the 3.3V mode of operation leads to power reductions in the order of 53 per cent, with only a 4dB to 5dB reduction in linearity.
Both modes allow the designer to optimise the power consumption of the downconverter for a variety of performance scenarios.
Each device is packaged in a compact, 6mm x 6mm, 36-pin TQFN that is pin- similar to the existing MAX9985, 19985A, and MAX9995 series of 700MHz to 2,200MHz dual mixers.
The entire family of dual downconverters is ideal for applications in which a common PCB layout is used for multiple frequency bands.
Request more information
More stories
Maxim offers IO-Link physical-layer transceiver for industrial applicationsdownload
The MAX14821 IO-Link physical-layer (PHY) transceiver from Maxim Integrated Products is suitable for for point-to-point communication between industrial master control modules and sensors and actuators, as well as 24V binary sensor/actuator applications.
Maxim Integrated Products set to roll out line of RFID ID systems
Maxim Integrated Products is introducing a line of RFID keys and cards designed for the automatic identification, access control and electronic markets.
H-bridge transformer creates isolated power supplies in smart grid metering applicationsvideodownload
Maxim Integrated Products has introduced the MAX13256, a H-bridge transformer driver that is designed to provide a simple way to create isolated power supplies in smart grid metering applications and industrial and medical equipment.
Maxim offers stereo audio codec to improve performance and prevent speaker damage
Maxim Integrated Products has introduced MAX98089, a highly integrated stereo audio codec whose small size and low power consumption makes it suitable for portable media applications such as tablets, netbooks and mobile phones.
Offline LED driver from Maxim Integrated Products provides flicker-free dimmingdownload
Maxim Integrated Products has introduced an offline LED driver for industrial, commercial and residential lighting applications such as retrofit dimmable LED lamps and universal LED bulbs.
