Voltage Controlled Amplifier Ic

The parts are trimmed at wafer stage for low thd and control.

Voltage controlled amplifier ic.

The higher the control voltage the more signal is passed. That 2180 series integrated circuit voltage controlled amplifiers vcas are very high performance current in current out devices with two opposing polarity voltage sensitive control ports. Thus by inserting an audio signal 10 mv within pin 2 and 3 and with controlling the current on pin 5 the amount of the signal output pin 6 is controlled. Things that can force changes to this circuit are many but are mostly limited to larger and smaller input signals and higher or lower supply voltage ranges.

The part is a low cost space saving solution for multi channel vca applications. This voltage controlled amplifier circuit is simply an op amp having an additional input at pin 5. They are very high performance current in current out devices with two opposing polarity voltage sensitive control ports. The vcr is one of the numerous interesting circuit elements that can be produced by using a jfet junction field effect transistor with simple biasing.

A simple linear voltage controlled amplifier can be constructed with one op amp and two jfets see the figure. This voltage controlled amplifier is fully functional and tested. Note in this case that the i bias gain control pins of the two otas are shorted together and fed from a single gain control voltage and current limiting resistor. The soundlazer vca offers a wide range exponential control of gain and attenuation with low signal distortion.

Figure 8 shows how two amplifiers of the figure 7 type can be used together to make a voltage controlled stereo amplifi er. At some voltage level the entire signal is let through. The part delivers great performance in a tiny package offering 118db dynamic range 130db gain control range and distortion under 0 1 without any adjustment. The vca810 is a dc coupled wideband continuously variable voltage controlled gain amplifier.

A voltage controlled amplifier can be realised by first creating a voltage controlled resistor vcr which is used to set the amplifier gain. That corporation unveils the new that 2162 the company s first dual blackmer voltage controlled amplifier vca ic. The amplifier can achieve an 80 db dynamic control range with less than 0 2. They offer wide range exponen tial control of gain and attenuation with low signal distortion.

This modern designed vca is based on the that 2181 series integrated circuit voltage controlled amplifiers vcas. A vca or voltage controlled amplifier lets you use a voltage to control the amount of another signal that is allowed through to the output of the module. The ic ideal for use in stereo amplifier applications.