Semiconductor device with source resistor
A semiconductor device includes a plurality of transistors, a plurality of metal layers, and a resistor. The plurality of transistors are connected in series between a power terminal and a ground terminal, and gate terminals of the transistors being connected together. The plurality of metal layers are overlaid above the plurality of transistors. The resistor is implemented between two of the plurality of metal layers.
1. A semiconductor device, comprising:
a first transistor;
a second transistor, wherein gate terminals of the first transistor and the second transistor are connected together;
a first thin film resistor implemented between two adjacent layers of a plurality of layers overlaid above the first transistor and the second transistor; and
a second thin film resistor implemented between the two adjacent layers.
2. The semiconductor device of claim 1 , wherein the first thin film resistor and the second thin film resistor comprise Titanium Nitride thin film resistors.
3. The semiconductor device of claim 1 , further comprising:
a first metal interconnect, wherein the first metal interconnect connects the gate terminals of the first transistor and the second transistor.
4. The semiconductor device of claim 3 , further comprising:
a second metal interconnect, wherein the second metal interconnect connects a source terminal of the first transistor to a first end of a resistor, wherein the resistor comprises the first thin film resistor and the second thin film resistor.
5. The semiconductor device of claim 4 , further comprising:
a third metal interconnect, wherein the third metal interconnect connects a second end of the resistor to a ground terminal.
6. The semiconductor device of claim 1 , wherein the two adjacent layers are metal interconnect layers.
7. The semiconductor device of claim 1 , wherein the two adjacent layers are a top metal layer and a bond pad layer.
8. A semiconductor device, comprising:
a transistor group implemented in a first area, wherein gate terminals of a plurality of transistors in the transistor group are connected together;
a plurality of metal layers overlaid above the transistor group; and
a plurality of thin film resistors implemented in a second area and between two of the plurality of metal layers,
wherein the second area is smaller than the first area.
9. The semiconductor device of claim 8 , wherein the plurality of thin film resistors comprise a first thin film resistor and a second thin film resistor, and the first thin film resistor and the second thin film resistor comprise Titanium Nitride thin film resistors.
10. The semiconductor device of claim 8 , further comprising:
a first metal interconnect, wherein the first metal interconnect connects the gate terminals.
11. The semiconductor device of claim 10 , further comprising:
a second metal interconnect, wherein the second metal interconnect connects a source terminal of one of the plurality of transistors in the transistor group to a first end of a resistor, wherein the resistor comprises the plurality of thin film resistors.
12. The semiconductor device of claim 11 , further comprising:
a third metal interconnect, wherein the third metal interconnect connects a second end of the resistor to a ground terminal.
13. The semiconductor device of claim 12 , wherein the first metal interconnect, the second metal interconnect, and the third metal interconnect are implemented in a third area, wherein the second area is smaller than the third area.
14. The semiconductor device of claim 8 , wherein the two of the plurality of metal layers comprise a first metal layer and a second metal layer, wherein the second metal layer is adjacent to the first metal layer, and the first metal layer is adjacent to the transistor group.
15. A semiconductor device, comprising:
a transistor group, wherein gate terminals of a plurality of transistors in the transistor group are connected together;
a plurality of metal interconnects overlaid above the transistor group
a top metal layer overlaid above the transistor group;
a bond pad layer overlaid above the top metal layer; and
a plurality of thin film resistors between the top metal layer and the bond pad layer.
16. The semiconductor device of claim 15 , wherein the plurality of thin film resistors comprise a first thin film resistor and a second thin film resistor, and the first thin film resistor and the second thin film resistor comprise Titanium Nitride thin film resistors.
17. The semiconductor device of claim 16 , wherein the plurality of metal interconnects comprise:
a first metal interconnect, wherein the first metal interconnect connects the gate terminals.
18. The semiconductor device of claim 17 , wherein the plurality of metal interconnects further comprise:
a second metal interconnect, wherein the second metal interconnect connects a source terminal of one of the plurality of transistors in the transistor group to a first end of a resistor, wherein the resistor comprises the plurality of thin film resistors.
19. The semiconductor device of claim 18 , wherein the plurality of metal interconnects further comprise:
a third metal interconnect, wherein the third metal interconnect connects a second end of the resistor to a ground terminal.
20. The semiconductor device of claim 19 , wherein the first metal interconnect, the second metal interconnect, and the third metal interconnect are implemented in a first area, wherein the plurality of thin film resistors are implemented in a second area, wherein the second area is smaller than the first area.