Techniques for sensing a semiconductor memory device
View Patent ↗Techniques for sensing a semiconductor memory device are disclosed. In one embodiment, the techniques may be realized as a semiconductor memory device comprising a plurality of memory cells arranged in an array of rows and columns and data sense amplifier circuitry coupled to at least one of the plurality of memory cells. The data sense amplifier circuitry may comprise first amplifier circuitry and resistive circuitry, wherein the first amplifier circuitry and the resistive circuitry may form a feedback loop.
1. An amplifier circuit comprising:
a first transistor coupled to a first control line for controlling a state of the first transistor;
a second transistor coupled to a second control line for controlling a state of the second transistor, wherein the first transistor and the second transistor are arranged in a series configuration and directly coupled at a common node; and
resistive circuitry directly coupled to the first transistor and the second transistor at the common node and to an input node of the amplifier circuit.
2. The amplifier circuit according to claim 1 , wherein the first transistor is a power transistor and the second transistor is a switching transistor.
3. The amplifier circuit according to claim 2 , wherein the power transistor is coupled to a power source.
4. The amplifier circuit according to claim 1 , wherein the resistive circuitry forms a feedback loop for the amplifier circuit.
5. The amplifier circuit according to claim 4 , wherein the resistive circuitry comprises a first resistive transistor.
6. The amplifier circuit according to claim 5 , wherein the common node is an output node of the amplifier circuitry, and wherein the first resistive transistor is coupled to the input node of the amplifier circuit and the output node of the amplifier circuit.
7. The amplifier circuit according to claim 6 , wherein a gate region of the first resistive transistor is coupled to the output node of the amplifier circuit.
8. The amplifier circuit according to claim 5 , wherein the resistive circuitry further comprises a second resistive transistor.
9. The amplifier circuit according to claim 8 , wherein the second resistive transistor is coupled to the first resistive transistor and an output node of the amplifier circuit.
10. The amplifier circuit according to claim 9 , wherein a gate region of the second resistive transistor is coupled to the output node of the amplifier circuit.
11. The amplifier circuit according to claim 1 , further comprising:
a third transistor coupled to third control line for controlling a state of the third transistor; and
a fourth transistor coupled to the third transistor;
wherein the third transistor and the fourth transistor are arranged in a series configuration.
12. The amplifier circuit according to claim 11 , wherein a gate region of the fourth transistor is coupled to the first transistor and the second transistor.
13. The amplifier circuit according to claim 11 , wherein the third transistor is a power transistor and the fourth transistor is a switching transistor.
14. The amplifier circuit according to claim 13 , wherein the power transistor is coupled to a power source.
15. The amplifier circuit according to claim 1 , further comprising pre-charge circuitry to pre-charge the amplifier circuit.
16. The amplifier circuit according to claim 15 , wherein the pre-charge circuitry is coupled to the first transistor and the second transistor.
17. The amplifier circuit according to claim 1 , further comprising inverter circuitry to change an output state of the amplifier circuit.
18. The amplifier circuit according to claim 17 , wherein the inverter circuitry comprises a transistor pair arranged in a series configuration.
19. The amplifier circuit according to claim 1 , further comprising input/output circuitry comprising selection circuitry for controlling access to the amplifier circuit.
20. The amplifier circuit according to claim 19 , wherein the input/output circuitry further comprises reset circuitry for resetting a state of the amplifier circuit.