we present an alternative CMos realization scheme of VDGA. The circuit is realized based on the employment of only tunable transconductance cells as fundamental circuits. proposed VDGA is a simplified variant of the VDBA element by replacing the unity-gain voltage amplifier with the current-controlled voltage amplifier. This element can, therefore, be thought of as a combination of the voltage differencing unit and the voltage gain amplifier As an application example, the resistorless realization of an electronically tunable voltage-mode biquad filter using the proposed VDGAs as active elements is also discussed. Computer simulation results with TSMC 0.35-um n-well CMOS real process parameters are given to demonstrate the characteristics of the circuit and its biquad filter application, and verify the theory