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A compact analog multiplier/divider circuit operating in current-mode is presented featuring low supply voltage, low area requirements and wide dynamic range. It is suited to standard digital CMOS processes and can be successfully employed in a wide range of analog signal processing applications. Measurement results for a 0.5 μm CMOS test chip prototype are presented. The circuit consumes 120 μW using...
A new DC offset compensation technique for voltage buffers is presented. It can used to improve the accuracy of data converters. This technique also compensates the finite gain error of the op-amp and it is fast compared to conventional techniques. As an application of this technique, a 10-bit current mode and a 10-bit voltage mode D/A converter are described. Simulation results in 0.5 mum CMOS technology...
A new compact scheme for implementation of linear gain programmable current mirrors with wide range continuously adjustable gain is introduced. It is based on a balanced configuration of differential pairs used as current steering elements. All mirror transistors operate in saturated mode and in strong inversion. Applications of the mirrors for implementation of a linear OTA/multiplier with wide range...
A new approach for the implementation of VHF biquadratic continuous time current mode filters with continuously programmable characteristics is introduced. It is based on unity gain first order low-pass building blocks replacing integrators used in conventional state variable filter structures. The implementation is based exclusively on utilization of simple current mirrors. This approach allows implementation...
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