LIC-Analog Multiplier using Emitter Coupled Transistor Pair

The basic function of analog multiplier using an emitter-coupled transistor pair is to

• add two voltages
• subtract two voltages
• multiply two voltages
• divide two voltages

The output resistance of emitter coupled pair is

• High
• Low
• Medium
• Very high

The emitter coupled transistor pair acts as a

• Voltage controlled capacitor
• Current controlled capacitor
• Voltage controlled resistor
• Current controlled resistor

The coupling capacitor is used to

• block DC voltage
• block AC voltage
• amplify the voltage
• filter out high frequency noise

The input impedance of the emitter coupled pair is

• High
• Low
• Medium
• Very high

In the emitter-coupled transistor pair, the output voltage is

• proportional to the difference between the input voltages
• proportional to the sum of the input voltages
• proportional to the product of the input voltages
• proportional to the ratio of the input voltages

The bandwidth of the emitter-coupled pair is limited by

• the input capacitance
• the output resistance
• the input resistance
• the gain of the amplifier