Ultra linear high voltage resistors

Patent metadata

Field	Value
Publication number	US-9825028-B2
Application number	US-201514591087-A
Country	US
Kind code	B2
Filing date	Jan 7, 2015
Priority date	Jan 7, 2015
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

Some embodiments include a resistor that may be used in audio conversion for an ADC. The resistor may be made up of an n-well as well as a p-well polysilicons. The n-well and p-well polysilicons may include a shallow trench isolator. The n-well and p-well components may be in series with other n-well or p-well components respectively. Similarly, multiple n-well components which are in series, may be in parallel with multiple p-well components.

First claim

What is claimed is:

1. A resistor comprising:
a poly resistor on n-well connected to a first shallow trench isolator, wherein the poly resistor on the n-well is configured to be biased at a positive voltage compared to an average voltage over a resistor stack; and
a poly resistor on p-well connected in parallel to a second shallow trench isolator, wherein the poly resistor on the p-well is configured to be biased at a negative voltage compared to the average voltage over the resistor stack.

2. The resistor of claim 1 , wherein the resistor creates a linear voltage output.

3. The resistor of claim 1 , wherein a resistor circuit is made up of three poly resistors on n-well connected in series in parallel with three poly resistors on p-well connected in series.

4. The resistor of claim 1 , wherein the resistor is made using a poly-Silicon substrate.

5. The resistor of claim 1 , wherein the resistor is used in an audio sigma delta conversion process.

6. The resistor of claim 1 , wherein a resistor circuit is made up of two poly resistors on n-well connected in series in parallel with two poly resistors on p-well connected in series.

7. The resistor of claim 1 , wherein the resistor is connected to a low-latency analog to digital converter.

8. The resistor of claim 1 , wherein the width of the resistor is at least 10 um.

9. The resistor of claim 1 , wherein the poly resistor on n-well is biased at the top of the resistor, and the poly resistor on p-well is biased at the top of the resistor.

10. An audio system comprising:
an analog-to-digital converter (ADC);
a resistor connected to the ADC requiring and comprising:
a poly resistor on n-well connected to a first shallow trench isolator, wherein the poly resistor on the n-well is configured to be biased at a positive voltage compared to an average voltage over a resistor stack, and
a poly resistor on p-well connected in parallel to a second shallow trench isolator, wherein the poly resistor on the p-well is configured to be biased at a negative voltage compared to the average voltage over the resistor stack; and

a digital amplifier connected to the ADC.

11. The audio system of claim 10 , wherein the resistor creates a linear voltage output.

12. The audio system of claim 10 , wherein a resistor circuit is made up of three poly resistors on n-well connected in series in parallel with three poly resistors on p-well connected in series.

13. The audio system of claim 10 , wherein a resistor circuit is made up of two poly resistors on n-well connected in series in parallel with two poly resistors on p-well connected in series.

14. An analog-to-digital converter comprising:
a low-latency analog-to-digital converter (LL-ADC), wherein the LL-ADC outputs current into a resistor requiring and comprising:
a poly resistor on n-well connected to a first shallow trench isolator, wherein the poly resistor on the n-well is configured to be biased at a positive voltage compared to an average voltage over a resistor stack; and
a poly resistor on p-well connected in parallel to a second shallow trench isolator, wherein the poly resistor on the p-well is biased at a negative voltage compared to the average voltage over the resistor stack.

15. The analog-to-digital converter of claim 14 , wherein the LL-ADC is configured using low voltage components.

16. The analog-to-digital converter of claim 14 , wherein a resistor circuit is made up of three poly resistors on n-well connected in series in parallel with three poly resistors on p-well connected in series.

Assignees

• Nxp Bv

Inventors

• Van Iersel Hendrikus
• Koerts Mattheus Johan

Classifications

• H03M1/0614

  of harmonic distortion (H03M1/0617 takes precedence) · CPC title

• H01L27/0802 Primary

  Electricity · mapped topic

• H03M1/12

  Analogue/digital converters ({H03M1/001 – } H03M1/10 take precedence) · CPC title

• H01L28/20

  Electricity · mapped topic

• H10D1/47

  Resistors having no potential barriers · CPC title