Bond pad sharing for powering a multiplicity of electrical components

Patent metadata

Field	Value
Publication number	US-9899047-B2
Application number	US-201314050725-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Oct 10, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A bond pad set includes at least one ground pad and at least one electrical bond pad configured to bias and send/receive signals. The bond pad set is electrically connected to a multiplicity of electrical components. At least one electrical bond pad of the bond pad set is shared between two or more of the electrical components.

First claim

What is claimed is:

1. An apparatus, comprising:
a slider comprising a plurality of electrical bond pads coupled to bias sources;
a plurality of electrical components of the slider each coupled to at least one of the electrical bond pads;
at least one of the electrical bond pads is a shared electrical bond pad coupled to at least two of the electrical components; and
circuitry configured to operate the plurality of electrical components alternately with respect to one another.

2. The apparatus of claim 1 , wherein the plurality of electrical components comprises disparate electrical components.

3. The apparatus of claim 1 , wherein:
the plurality of electrical components comprises at least two readers; and
the at least two readers are coupled to the shared electrical bond pad.

4. The apparatus of claim 3 , wherein a termination load is connected to an unshared electrical bond pad as between the at least two readers.

5. The apparatus of claim 1 , wherein:
the plurality of electrical components comprises at least two readers and at least one contact sensor; and
the contact sensor and one of the at least two readers are coupled to the shared electrical bond pad.

6. The apparatus of claim 5 , wherein:
the one reader coupled to the shared electrical bond pad is configured to operate at times when the contact sensor is not operating; and
the other of the at least two readers is configured to operate at times when the contact sensor is operating.

7. The apparatus of claim 5 , wherein the slider comprises a dummy contact sensor coupled to the one of the at least two readers coupled to the shared electrical bond pad.

8. The apparatus of claim 1 , wherein
the plurality of electrical components comprises a writer; and
the writer is coupled between one of the electrical bond pads and a ground.

9. The apparatus of claim 1 , wherein:
the plurality of electrical components comprises a writer heater and at least two readers; and
the writer heater and one of the at least two readers are coupled to the shared electrical bond pad.

10. The apparatus of claim 1 , wherein:
the plurality of electrical components comprises three readers, and pairs of the three readers are coupled to one of three shared electrical bond pads.

11. The apparatus of claim 1 , wherein:
the plurality of electrical components comprises a writer heater and a reader heater; and
the writer heater and reader heater are coupled to the shared electrical bond pad.

12. The apparatus of claim 11 , wherein:
the writer heater and reader heater are coupled in parallel between the two shared electrical bond pads; and
each of the writer and reader heaters is coupled in series to a respective diode, the writer and reader heaters configured to operate alternately depending on the direction of current flow between the two shared electrical bond pads.

13. A system, comprising:
a bond pad set electrically connected to a plurality of electrical components and comprising at least one ground pad and at least one electrical bond pad, the at least one electrical bond pad shared between two or more of the electrical components; and
circuitry configured to operate the plurality of electrical components alternately with respect to one another.

14. The system of claim 13 , wherein the plurality of electrical components comprises disparate electrical components.

15. The system of claim 13 , wherein the plurality of electrical components comprises at least two readers.

16. The system of claim 13 , wherein the plurality of electrical components comprises at least two readers, and a termination load is connected to an unshared electrical bond pad as between the at least two readers.

Assignees

• Seagate Technology Llc

Inventors

• Gadbois Jason Bryce
• Macken Declan
• Klarqvist Karsten

Classifications

• G11B2005/0008

  Magnetic conditionning of heads, e.g. biasing · CPC title

• G11B5/4976

  Disposition of heads, e.g. matrix arrangement · CPC title

• G11B2005/0021

  Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal · CPC title

• G11B5/4853 Primary

  Constructional details of the electrical connection between head and arm · CPC title

• G11B5/4886

  relative to rotating disc · CPC title