EL2020 Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Lista de partido
EL2020 Datasheet PDF : 14 Pages
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EL2020
Typical Performance Curves Non-Inverting Gain of One
Maximum Undistorted
Output Voltage vs
Frequency
Input Resistance vs.
Temperature
PSRR vs Frequency
Voltage Noise vs
Frequency
Current Noise vs
Frequency
Output Impedance vs
Frequency
Supply Current vs
Supply Voltage
8-Pin Plastic DIP
Maximum Power
Dissipation vs Ambient
Temperature
20-Pin SOLMaximum
Power Dissipation vs
Ambient Temperature
Application Information
Theory of Operation
The EL2020 has a unity gain buffer similar to the EL2003
from the non-inverting input to the inverting input. The error
signal of the EL2020 is a current flowing into (or out of) the
inverting input. A very small change in current flowing
through the inverting input will cause a large change in the
output voltage. This current amplification is the
transresistance (ROL) of the EL2020 [VOUT = ROL * IINV].
Since ROL is very large (≈ 106), the current flowing into the
inverting input in the steady state (non-slewing) condition is
very small.
Therefore we can still use op-amp assumptions as a first
order approximation for circuit analysis, namely that...
8
1. The voltage across the inputs ≈ 0 and
2. The current into the inputs is ≈ 0
SIMPLIFIED BLOCK DIAGRAM OF EL2020
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