<P> The operational transconductance amplifier ( OTA ) is an amplifier whose differential input voltage produces an output current . Thus , it is a voltage controlled current source ( VCCS ) . There is usually an additional input for a current to control the amplifier 's transconductance . The OTA is similar to a standard operational amplifier in that it has a high impedance differential input stage and that it may be used with negative feedback . </P>
<P> The operational transconductance amplifier ( OTA ) is an amplifier whose differential input voltage produces an output current . Thus , it is a voltage controlled current source ( VCCS ) . There is usually an additional input for a current to control the amplifier 's transconductance . The OTA is similar to a standard operational amplifier in that it has a high impedance differential input stage and that it may be used with negative feedback . </P>
in a transconductance amplifier it is desirable to have
in a transconductance amplifier it is desirable to have
differential input voltage
differential input voltage