Sensor die structure
View Patent ↗A sensor is implemented in an integrated circuit. The sensor includes one or more sensor pads that are provided at or near a surface of the integrated circuit. One or more integrated circuit components such as a sense amplifier are provided in the integrated circuit die adjacent the sensor pads. One or more other components are provided in the integrated circuit die adjacent the sensor pads.
1. An integrated circuit, comprising:
a plurality of sensor pads in at least one metal layer of the integrated circuit; and
a plurality of tile functional blocks, in a substrate layer of the integrated circuit, formed by a tile functional block replicated directly beneath each of the plurality of sensor pads,
wherein each of the plurality of tile functional blocks includes a sensor component and an other component,
wherein the other component of each of the plurality of tile functional blocks foams a portion of at least one of a data memory and a programmable logic array.
2. The integrated circuit of claim 1 , wherein the sensor component is a filter.
3. The integrated circuit of claim 1 , wherein the sensor component is a sense amplifier.
4. The integrated circuit of claim 3 , wherein the sensor component is coupled at an input to one of the plurality of sensor pads.
5. The integrated circuit of claim 4 , wherein the sensor component is coupled at an output to sensor logic that includes an analog-to-digital converter.
6. The integrated circuit of claim 1 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a boot ROM.
7. The integrated circuit of claim 1 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a one-time-programmable memory.
8. The integrated circuit of claim 1 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a RAM.
9. The integrated circuit of claim 1 , wherein the sensor pads comprise metal plates.
10. The integrated circuit of claim 1 , wherein the integrated circuit comprises a biometric sensor.
11. The integrated circuit of claim 10 , wherein the integrated circuit is configured to be implemented in a fingerprint reader.
12. A fingerprint reader, comprising:
a processor; and
a biometric sensor, comprising:
a plurality of sensor pads in at least one metal layer of an integrated circuit; and
a plurality of tile functional blocks, in a substrate layer of the integrated circuit, formed by a tile functional block replicated directly beneath each of the plurality of sensor pads,
wherein each of the plurality of tile functional blocks includes a sensor component and an other component,
wherein the other component of each of the plurality of tile functional blocks forms a portion of at least one of a data memory and a programmable logic array.
13. The integrated circuit of claim 12 , wherein the sensor component is a filter.
14. The integrated circuit of claim 12 , wherein the sensor component is a sense amplifier.
15. The integrated circuit of claim 14 , wherein the sensor component is coupled at an input to one of the plurality of sensor pads.
16. The integrated circuit of claim 15 , wherein the sensor component is coupled at an output to sensor logic that includes an analog-to-digital converter.
17. The integrated circuit of claim 12 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a boot ROM.
18. The integrated circuit of claim 12 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a one-time-programmable memory.
19. The integrated circuit of claim 12 , wherein the other component of each of the plurality of tile functional blocks forms a portion of a RAM.
20. The integrated circuit of claim 12 , wherein the sensor pads comprise metal plates.
21. An integrated circuit, comprising:
a plurality of sensor pads in at least one metal layer of the integrated circuit; and
a plurality of tile functional blocks, in a substrate layer of the integrated circuit, formed by a tile functional block replicated directly beneath each of the plurality of sensor pads,
wherein each of the plurality of tile functional blocks includes a sensor component and an other component,
wherein each other component of the plurality of tile functional blocks together forms at least one of a data memory and a programmable logic array.