library ieee;  use ieee.electrical_systems.all;
                        
entity opamp is
  port ( terminal plus_in, minus_in, output : electrical );
end entity opamp;

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architecture slew_limited of opamp is
  
  constant gain : real := 50.0;
  quantity v_in across plus_in to minus_in;
  quantity v_out across i_out through output;
  quantity v_amplified : voltage;
  
begin
  
  v_amplified == gain * v_in;
        
  v_out == v_amplified'slew(1.0e6,-1.0e6);
        
end architecture slew_limited;