Telecom Shelter: Filter Unit

Block diagram (SBD) for a Filter Unit featuring TI’s OMAP-L13x Processors, Power Management Devices, Data Converters, Amplifiers, and Interface Devices.


Filter units units consist of filters, diplexers, duplexers and combiners used to filter, combine transmit and/or receive signals in the RF domain.

This unit generates the power for the LNA,TMA and antenna apart from performing measurement and monitoring of key parameters like VSWR, temperature etc.

OMAP-L1x applications processors include ARM9 and ARM9-plus-DSP architectures and offer a variety of peripherals for networking and run Linux or the DSP/BIOS™ real-time kernel for operating system flexibility. For host controlling, the OMAP-L1x product line is also pin-for-pin compatible with various devices in the new TMS320C674x DSP series. Power consumption ranges from 8 mW in standby to 400 mW total power.

The AM1x Sitara™ ARM9 microprocessors offer a set of code-compatible devices, which support multiple industry-specific peripherals and interfaces for embedded industrial, medical and consumer designs. The AM1x MPUs integrate notable interfaces, such as a serial ATA, universal parallel port and TI's unique Programmable Real-time Unit. The AM1x devices are pin-to-pin compatibility with TI's OMAP-L1x processors to allow developers to scale up to the OMAP-L1x to integrate real-time data, video and audio processing capabilities.

The high-performance ADC solutions from TI, coupled with the computing power of the processor offer precision measurements of VSWR. These 10/12 bit converters have high linearity, excellent dynamic range and work at very low operating power.

TI has a complete power solution-Linear regulators, Step-down regulators and DC/DC converters for the FU that can step down the 48V supply rail to any intermediate level for powering all other chips on board.

In-rush limiting is implemented to limit the in-rush current going to the board at startup. The TPS2490 can be used to smoothly control the voltage and current ramp up.

Technical documents

Application notes & user guides

Application Notes (4)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 18 May 2015 1268
HTM 8 KB 02 Mar 2009 769
HTM 8 KB 02 Oct 2000 143
HTM 8 KB 02 Oct 2000 110

User Guides (1)

Title Abstract Type Size (KB) Date Views
pdf 11.11 MB 14 Sep 2017 804

Selection & solution guides

Selection Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 5.8 MB 10 Jun 2016 20834

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