Differential Input Resistance of BJT Amplifier Calculator

✖Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND.ⓘ Differential Input Voltage [V_id]			+10% -10%
✖Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.ⓘ Base Current [i_B]			+10% -10%

✖Differential Input Resistance is defined as a single-ended "resistor" (connected between the input and ground) in the case of differential mode.ⓘ Differential Input Resistance of BJT Amplifier [R_id]

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Differential Input Resistance of BJT Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Differential Input Resistance = Differential Input Voltage/Base Current
R_id = V_id/i_B
This formula uses 3 Variables

Variables Used

Differential Input Resistance - (Measured in Ohm) - Differential Input Resistance is defined as a single-ended "resistor" (connected between the input and ground) in the case of differential mode.
Differential Input Voltage - (Measured in Volt) - Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND.
Base Current - (Measured in Ampere) - Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.

STEP 1: Convert Input(s) to Base Unit

Differential Input Voltage: 7.5 Volt --> 7.5 Volt No Conversion Required
Base Current: 0.27 Milliampere --> 0.00027 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_id = V_id/i_B --> 7.5/0.00027

Evaluating ... ...

R_id = 27777.7777777778

STEP 3: Convert Result to Output's Unit

27777.7777777778 Ohm -->27.7777777777778 Kilohm (Check conversion here)

FINAL ANSWER

27.7777777777778 ≈ 27.77778 Kilohm <-- Differential Input Resistance

(Calculation completed in 00.004 seconds)

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< Resistance Calculators

Differential Input Resistance of BJT Amplifier given Common-Emitter Current Gain

LaTeX Go Differential Input Resistance = (Common Emitter Current Gain+1)*(2*Emitter Resistance+2*Change in Collector Resistance)

Differential Input Resistance of BJT Amplifier

LaTeX Go Differential Input Resistance = Differential Input Voltage/Base Current

Transconductance of Small Signal Operation of BJT Amplifier

LaTeX Go Transconductance = Collector Current/Threshold Voltage

Differential Input Resistance of BJT Amplifier given Small-Signal Input Resistance

LaTeX Go Differential Input Resistance = 2*Base Emitter Input Resistance

Differential Input Resistance of BJT Amplifier Formula

LaTeX Go

Differential Input Resistance = Differential Input Voltage/Base Current
R_id = V_id/i_B

What is the differential input resistance of an amplifier?

The differential input resistance, rid or ri(d), is defined as the small signal resistance between two ungrounded input terminals. It is expressed in units of ohms. The rid is one of a group of parasitic elements affecting input impedance.

How to Calculate Differential Input Resistance of BJT Amplifier?

Differential Input Resistance of BJT Amplifier calculator uses Differential Input Resistance = Differential Input Voltage/Base Current to calculate the Differential Input Resistance, The Differential input resistance of BJT Amplifier formula is defined as equivalent resistance that would be measured at either input terminal with other terminal grounded. Differential Input Resistance is denoted by R_id symbol.

How to calculate Differential Input Resistance of BJT Amplifier using this online calculator? To use this online calculator for Differential Input Resistance of BJT Amplifier, enter Differential Input Voltage (V_id) & Base Current (i_B) and hit the calculate button. Here is how the Differential Input Resistance of BJT Amplifier calculation can be explained with given input values -> 0.027778 = 7.5/0.00027.

FAQ

What is Differential Input Resistance of BJT Amplifier?

The Differential input resistance of BJT Amplifier formula is defined as equivalent resistance that would be measured at either input terminal with other terminal grounded and is represented as R_id = V_id/i_B or Differential Input Resistance = Differential Input Voltage/Base Current. Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND & Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.

How to calculate Differential Input Resistance of BJT Amplifier?

The Differential input resistance of BJT Amplifier formula is defined as equivalent resistance that would be measured at either input terminal with other terminal grounded is calculated using Differential Input Resistance = Differential Input Voltage/Base Current. To calculate Differential Input Resistance of BJT Amplifier, you need Differential Input Voltage (V_id) & Base Current (i_B). With our tool, you need to enter the respective value for Differential Input Voltage & Base Current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Differential Input Resistance?

In this formula, Differential Input Resistance uses Differential Input Voltage & Base Current. We can use 2 other way(s) to calculate the same, which is/are as follows -

Differential Input Resistance = 2*Base Emitter Input Resistance
Differential Input Resistance = (Common Emitter Current Gain+1)*(2*Emitter Resistance+2*Change in Collector Resistance)

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