MAX2671EUT+T RF/IF and RFID

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
RF Type:	Cellular, ISM, PCS, WLAN
Frequency:	400MHz ~ 2.5GHz
Number of Mixers:	1
Gain:	8.9dB
Noise Figure:	11.3dB
Secondary Attributes:	Up Converter
Current - Supply:	11.8mA
Voltage - Supply:	2.7 V ~ 5.5 V
Package / Case:	SOT-23-6
Supplier Device Package:	SOT-23-6

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RF Mixers: MAX2671EUT+T Application Field and Working Principle

RF mixers are essential components of many radio frequency (RF) signal processing circuits, finding use in systems ranging from shortwave radio transceivers to high-end communications networks. The MAX2671EUT+T is a four-port SiGe mixer designed to support performance-critical applications such as High Data Rate Wireless LAN (HDR-WLAN). It combines a cutting-edge broadband RF front-end with an integrated SimplexTM switching architecture and Microwave Integrated Circuit (MIC) core. This short article will discuss the application fields and working principle of this unique device.

Application Field of MAX2671EUT+T

The MAX2671EUT+T is a high-performance RF switch-based mixer that provides superior performance in applications requiring low-noise, wide-band operation. This device has been developed for applications such as 802.11n wireless LANs, small cell networks, and other wireless applications that require low-noise gain and wide IF signal bandwidth. Its advanced features, such as its integrated Simplex switching architecture and its splitter/combiner approach to signal mixing, make it ideally suited for these demanding applications. The MAX2671EUT+T is designed to meet the stringent requirements of wire-based small-cell systems, including a high level of integration, low power consumption, and wide dynamic range. This device features very low self-noise, making the MAX2671EUT+T an ideal choice for critical RF switching applications. Additionally, the SiGe transistor technology used in this device ensures its excellent SSO (single-sideband) rejection performance.

Working Principle of MAX2671EUT+T

The MAX2671EUT+T is a broadband RF switch-based four-port active mixer, utilizing an integrated Simplex switching architecture. Millimeterwave signal sources (TX) are transmitted via a transmitting antenna to the MAX2671EUT+T input port. The signals are then routed to the spatially separated source port, which is isolated from the main antenna port via a switch.The signal is then sent through the switch control circuit, which utilizes an integrated high speed Logic Optimized Switch (LOSC) to select the appropriate switches to enable signal mixing. The mixed signal is then output from the device’s main output port. The fourth port of the device is an output port for image rejection and gain leveling control purposes. The signal is then filtered by the high speed programmable trans-impedance filter (TRF), which is digitally controlled by the switch control circuit. The TRF allows for precise filtering of the signal, resulting in improved image rejection and noise performance. Finally, the signal is amplified by the high-gain detector circuit, allowing for improved dynamic range and unambiguous detection of high-level signals.

Conclusion

The MAX2671EUT+T is a high-performance RF switch-based four-port active mixer, designed for use in wireless systems requiring low-noise, wide-band operation. This device features an integrated Simplex switching architecture and integrated high-speed programmable trans-impedance filter (TRF), which enable it to provide superior performance for critical RF switching applications. The MAX2671EUT+T’s combination of low power consumption and high dynamic range make it an ideal choice for a variety of wireless applications.

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