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Xicor closed loop architecture allows auto-correction

Posted: 01 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:xircor? ic design? closed loop control? odin architecture? odin?

The ODIN architecture for high-performance adaptive closed-loop control allows systems designers to implement auto-correction for errors related to time, temperature or other system-level effects. The architecture also supports an on-chip register stack that can be used to store preset bias points, predetermined correction factors, or general-purpose system data.

The architecture features a high precision input stage comprised of an instrumentation amplifier and a low-pass filter capable of detecting signals as low as 50mV in a 30V common-mode signal with 1 percent accuracy over temperature.

This input signal is then amplified and compared to a programmable voltage reference, which causes an increment or decrement to the programmable bias voltage source. The loop is closed if small changes in the input error signal cause an increment or decrement to the output drive.

The company's X9470 will be the first product to utilize the ODIN architecture. The device supports full static and dynamic autobiasing of LDMOS transistors and is targeted at cellular basestation RF power amplifier biasing.

The X9470 also features temperature compensation and alarm functions which serve as advanced warning for power fail, overvoltage or undervoltage, or gate shutdown events. The company claims that the device 2G, 2.5G and 3G basestation transceivers as well as point-to-multipoint and WLL systems.

The device is expected to have an average selling price of between $6 and $10.





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