×

CIRCUIT ARRANGEMENT WITH TEMPERATURE COMPENSATION

  • US 20110234301A1
  • Filed: 03/24/2011
  • Published: 09/29/2011
  • Est. Priority Date: 03/24/2010
  • Status: Active Grant
First Claim
Patent Images

1. A circuit arrangement having at least one analog switch, which is operated with a supply voltage and comprises a switching signal contact and a pair of switch contacts, whereby applied to the switching signal contact is an electrical switching signal depending on which an electrical connection can be switched between the switch contacts whose internal on-resistance is temperature dependent, wherein the circuit arrangement has in the vicinity of the at least one analog switch at least one additional similar reference analog switch, which is operated with the same common supply voltage and which is controlled such that the switch contacts thereof are connectable continuously via the internal temperature-dependent on-resistance thereof, whereby at least one comparison circuit is provided by means of which depending on the comparison of the internal on-resistance of the at least one reference analog switch with at least one external reference resistance or another setpoint setting of the reference analog switch(es), at least one control signal is generated, by means of which the internal on-resistance of the at least one reference analog switch is kept constant by changing the common supply voltage of all analog switches depending on the control signal, particularly can be adjusted to the at least one reference resistance or the otherwise formed setpoint setting of the reference analog switch(es).

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×