Termination circuit, semiconductor device, and electronic device
AssigneeFujitsu Limited
InventorHiroshi Maruyama
Life of this patent
Estimating the term…
Abstract
The termination circuit includes first and second resistance circuits and is connected to a transmission line. The first resistance circuit is disposed on at least one of a pull-up side, which is between the transmission line and a power source, and a pull-down side, which is between the transmission line and ground, and has a negative property, by which an increase in an applied voltage decreases a resistance value of the first resistance circuit. The second resistance circuit is connected in parallel to the first resistance circuit. The second resistance circuit has a positive property, by which an increase in the applied voltage increases a resistance value of the second resistance circuit.
Claims7
A termination circuit connected to a transmission line, comprising:
- a resistance circuit being disposed on at least one of a pull-up side, which is between the transmission line and a power source, and a pull-down side, which is between the transmission line and ground, and having a diode connected MOS transistor, wherein
- the resistance circuit includes
- a first resistance circuit with a negative property, by which an increase in an applied voltage decreases a resistance value of the first resistance circuit;
- and
- a second resistance circuit with a positive property, by which an increase in the applied voltage increases a resistance value of the second resistance circuit,
- the first and second resistance circuits are connected in parallel.
A termination circuit connected to a transmission line, comprising:
- a first resistance circuit being disposed on at least one of a pull-up side, which is between the transmission line and a power source, and a pull-down side, which is between the transmission line and ground, and having a negative property, by which an increase in an applied voltage decreases a resistance value of the first resistance circuit;
- and
- a second resistance circuit being connected in parallel to the first resistance circuit, and having a positive property, by which an increase in the applied voltage increases a resistance value of the second resistance circuit.
A semiconductor device connected to a transmission line for inputting signal into the semiconductor device, comprising:
- a termination circuit connected to a transmission line, the termination circuit includes a resistance circuit being disposed on at least one of a pull-up side, which is between the transmission line and a power source, and a pull-down side, which is between the transmission line and ground, and having a diode connected MOS transistor, wherein
- the resistance circuit includes
- a first resistance circuit with a negative property, by which an increase in an applied voltage decreases a resistance value of the first resistance circuit;
- and
- a second resistance circuit with a positive property, by which an increase in the applied voltage increases a resistance value of the second resistance circuit,
- the first and second resistance circuits are connected in parallel.
Dependencies are inferred from the claim text.