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There are 21 different types of circuit components supported in FilterShop. Many of these components have unique capabilities and were specifically created to support advanced filter development utilizing mixed analog and digital technologies.
 
 
     
Wire  

Basic component for electrically connecting the nodes of other components. Each wire can have up to 50 ver tex points. Wire vertex points are automatically locked to a ghost grid, and segments can have any angle.

 
 
Generator  
The generator has standard parameters for output level and output impedance. Also, any Data Curve or Guide Curve can be assigned for use as a nonflat response profile. Programmable noise density is also included.
 
Connection Dot  
A nonelectrical component which can be used to indicate a cross point connection of wires or other components. Can also be used for polarity or notation mark ing purposes.
 
 
 
Impedance Function  
User definable complex impedance. Any impedance curve can be imported into the component to define the impedance function.
 
 
 
Data Node    
This square marker placed at an electrical node/vertex connection of the circuit indicates that the node will produce output curve data. Up to 31 circuit data nodes can be plotted simultaneously. A text description can be assigned.
 
 
Switch  
Each switch has selectable poles from 1 to 26. Parasitic parameters for ON resistance and OFF leakage capacitance.
 
 
 
Text Comment  
A nonelectrical component used to add text comments or notes to the schematic. A choice of three fonts can be selected for each comment.
 
 
 
Opamp  
The opamp contains a mathematical model for AC analysis. Parameters for input/output impedance, complex gain function, and voltage/current noise are provided. Model parameter sets are selected and loaded from the opamp libraries. Very fast analysis.
 
Ground  
The bus connection for the electrical reference datum. Each circuit must include at least one connection to ground, since all output node voltages are relative to ground.
 
 
 
Transfer Function  
User definable complex gain, ungrounded. Standard transfer functions are selectable, as well as any arbitrary response obtained from a Data Curve or Guide Curve. Input/output impedance parameters. 
 
 
Resistor  
Each resistor has selectable precision and standard values of 0%, 1%, 5%, 10%, 20%, and also has a temperature coefficient parameter in PPM.
 
 
 
Summer  
Each summer has selectable two or three inputs, each with selectable polarity. Parameters for input impedance and output impedance.
 
 
Capacitor  
Each capacitor has selectable precision and standard values of 0%, 1%, 5%, 10%, 20%, and also has a temperature coefficient parameter in PPM.
 
 
 
Buffer  
Each buffer has parameters for precision gain and delay, in addition to input/output impedance and polarity.
 
 
 
Inductor  
Each inductor has selectable precision and standard values of 0%, 1%, 5%, 10%, 20%, and also has a temperature coefficient parameter in PPM. Parasitic parameters for series resistance and shunt capacitance with Fo/Q are provided.
 
 
Switched Capacitor Network  
The SCN provides a sampled signal version of an equivalent resistance. Parameters for equivalent resistance, clock frequency, and capacitance are included.
 
 
FDNR  
Each FDNR (frequency dependent negative resistor) has selectable precision and standard values of 0%, 1%, 5%, 10%, 20%, and also has a temperature coefficient parameter in PPM. FDNR units are Farads2. The component behaves essentially as a squared capacitor.
 
Digital IIR Filter  
A frequency domain representation of a digital IIR filter. Impedance parameters for input/output are provided. Simulation of filter response with finite coefficient effects is also included.
 
Potentiometer  
Each pot has selectable precision and standard values of 0%, 1%, 5%, 10%, 20%, and also has a temperature coefficient parameter in PPM. Selectable taps of 0,1,2,3 each with definable locations. Any taper curve can be assigned.
 
 
Digital FIR Filter  
A frequency domain representation of a digital FIR filter. Impedance parameters for input/output are provided. Simulation of filter response with finite coefficient effects is also included.
 
Transformer  
Each transformer has parameters for primary inductance, secondary inductance, mutual inductance, turns ratio, and coupling coefficient.
 
 
   

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