LMV1015XRX-25 datasheet(1/11 Pages) NSC

Part #	LMV1015XRX-25

Description	Built-in Gain IC?셲 for High Sensitivity 2-Wire Microphones

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Manufacturer	NSC [National Semiconductor (TI)]

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LMV1015 Analog Series:

Built-in Gain IC’s for High Sensitivity 2-Wire

Microphones

General Description

The LMV1015 is an audio amplifier series for small form

factor electret microphones. This 2-wire portfolio is designed

to replace the JFET amplifier. The LMV1015 series is ideally

suited for applications requiring high signal integrity in the

presence of ambient or RF noise, such as in cellular com-

munications. The LMV1015 audio amplifiers are guaranteed

to operate over a 2.2V to 5.0V supply voltage range with

fixed gains of 15.6 dB and 23.8 dB. The devices offer excel-

lent THD, gain accuracy and temperature stability as com-

pared to a JFET microphone.

The LMV1015 series enables a two-pin electret microphone

solution, which provides direct pin-to-pin compatibility with

the existing older JFET market.

National Semiconductors built-in gain families are offered in

extremely thin space saving 4-bump micro SMD packages

(0.3 mm maximum). The LMV1015XR is designed for 1.0

mm ECM canisters and thicker. These extremely miniature

packages have the Large Dome Bump (LDB) technology.

This micro SMD technology is designed for microphone

PCBs requiring 1 kg adhesion criteria.

Features

(Typical LMV1015-15, 2.2V supply, R

L = 2.2 k

Ω, C = 2.2 µF,

V

IN =18mVPP, unless otherwise specified)

n

Supply voltage

2V - 5V

n

Supply current

<180 µA

n

Signal to noise ratio (A-weighted)

60 dB

n

Output voltage noise (A-weighted)

−89 dBV

n

Total harmonic distortion

0.09%

n

Voltage gain

— LMV1015-15

15.6 dB

— LMV1015-25

23.8 dB

n

Temperature range

−40˚C to 85˚C

n

Large Dome 4-Bump micro SMD package with improved

adhesion technology.

Applications

n

Cellular phones

n

Headsets

n

Mobile communications

n

Automotive accessories

n

PDAs

n

Accessory microphone products

Schematic Diagram

20128901

Built-In Gain Electret Microphone

20128902

May 2005

DS201289

www.national.com

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LMV1015XRX-25 Datasheet(PDF) 1 Page - National Semiconductor (TI)

LMV1015XRX-25 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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