Miniature microphone with balanced termination

Details Miniature microphone with balanced termination Miniature microphone with balanced termination

2004-03-18

2008-12-16

Le, Huyen D (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S175000, C381S369000

Reexamination Certificate

active

07466835

ABSTRACT:
The present invention provides a miniature MEMS microphone comprising a single-ended transducer element connected to an amplifier providing a differential electrical output at terminals arranged at a substantially plane exterior surface. The differential or balanced output signal provides a miniature microphone exhibiting a high dynamic range and a reduced susceptibility to EMI. The microphone is adapted for surface mounting thus the extra output terminal required is still suitable for low cost mass production. In preferred embodiments the transducer element and amplifier are silicon-based. The microphone may have a plurality of separate single-ended transducer elements connected to separate amplifiers providing separate differential outputs. The microphones according to the invention are advantageous for applications within for example hearing aids and mobile equipment.

REFERENCES:
patent: 3778561 (1973-12-01), Reedyk
patent: 5097224 (1992-03-01), Madaffari et al.
patent: 5130666 (1992-07-01), Nicollini
patent: 6088463 (2000-07-01), Rombach et al.
patent: 6522762 (2003-02-01), Mullenborn et al.
patent: 6593870 (2003-07-01), Dummermuth et al.
patent: 6785393 (2004-08-01), Lipponen et al.
patent: 3413145 (1985-10-01), None
patent: 19547195 (1997-06-01), None
patent: WO 00/70630 (2000-11-01), None
patent: WO 01/19133 (2001-03-01), None
patent: WO 01/19134 (2001-03-01), None

Affiliated with

Also associated with

Rating

Miniature microphone with balanced termination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Miniature microphone with balanced termination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Miniature microphone with balanced termination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4043703