Bissoy.com
Doctors Medicines MCQs Q&A

In order to balance the offset voltage of an operational amplifier, a small DC voltage is applied to input terminals where the connection is

In order to balance the offset voltage of an operational amplifier, a small DC voltage is applied to input terminals where the connection is Correct Answer Series with both inverting as well as non-inverting input

Input offset Voltage (Vi0):

  • If no external signal is applied to the op-amp at the inverting and non-inverting input terminal, the output must be zero.
  • But due to the variation of transistor Q1 and Q2 is differential amplifier the output of the op-amp will not be zero this is known as offset.
  • The voltage that must be applied between the two input terminals of an op-amp to nullify output called offset voltage.

The value for ideal op-amp Vi0 = 0 V but practical value is around 100 μV (typical)

Related Questions

Consider an inverting amplifier with a nominal gain of 1000 constructed from an op amp with an input offset voltage of 3 mV and with output saturation levels of ±10 V. If the effect of VOs(input offset voltage) is nulled at room temperature (250C), how large an input can one now apply if the circuit is to operate at a constant temperature?
Consider an inverting amplifier with a nominal gain of 1000 constructed from an op amp with an input offset voltage of 3 mV and with output saturation levels of ±10 V. If the effect of VOs(input offset voltage) is nulled at room temperature (250C). The circuit is to operate at a temperature in the range 0°C to 75°C and the temperature coefficient of VOS is 10 μV/°C?
Consider an inverting amplifier circuit designed using an op amp and two resistors, R1 = 10 kΩ and R2 = 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.
Which amplifier will reject any common mode signal that appears simultaneously at both amplifier input terminal and amplifies only the voltage difference that appears across its input terminals?
Consider an inverting amplifier with a nominal gain of 1000 constructed from an op amp with an input offset voltage of 3 mV and with output saturation levels of ±10 V. What is (approximately) the peak sine-wave input signal that can be applied without output clipping?
The inverting input terminal of an operational amplifier (op-amp) is shorted with the output terminal apart from being grounded. A voltage signal V1 is applied to the non-inverting input terminal of the op-amp. Under this configuration, the op-amp function is as
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.
Rashna Company collected the following data in its accounting records in 2014 : From the income statement : Depreciation expense Tk. 1,000 Loss on sale of equipment 3,000 From the comparative balance sheet : Beginning balance , equipment Tk. 12,500 Ending balance , equipment 8,000 Beginning balance , accumulated depreciation 2,000 Ending balance , accumulated depreciation 2,400 No new equipment was purchased during the year. The equipment was sold at the end of the year. What was the cash in -flow from the sale of equipment in 2014?
Which factor affect the input offset voltage, bias current and input offset current in an op-amp
A transistor is used in common emitter mode as an amplifier. Then a. The base-emitter junction is forward biased b. The base-emitter junction is reverse biased  c. The input signal is connected in series with the voltage applied to the base-emitter junction  d. The input signal is connected in series with the voltage applied to bias the base-collector junction Which of the following statement is true?