Datasheet > LMV1091TM/NOPB

LMV1091TM/NOPB

更新时间： 2024-11-22 11:12:23

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
23页	861K
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具有噪声抑制功能的双输入麦克风前置放大器 \| YFQ \| 25 \| -40 to 85

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LMV1091TM/NOPB 数据手册

LMV1091

www.ti.com

SNAS481C –OCTOBER 2009–REVISED MAY 2013

LMV1091 Dual Input, Far Field Noise Suppression Microphone Amplifier

Check for Samples: LMV1091

FEATURES

DESCRIPTION

The LMV1091 is a fully analog dual differential input,

differential output, microphone array amplifier

designed to reduce background acoustic noise, while

•

No Loss of Voice Intelligibility

Low Power Consumption

Shutdown Function

delivering

superb

speech

clarity

voice

communication applications.

No added Processing Delay

Differential Outputs

The LMV1091 preserves near-field voice signals

within 4cm of the microphones while rejecting far-field

acoustic noise greater than 50cm from the

microphones. Up to 20dB of far-field rejection is

possible in a properly configured and using ±0.5dB

matched micropohones.

Adjustable 12 - 54dB Gain

Excellent RF Immunity

Available in a 25–Bump DSBGA Package

APPLICATIONS

Part of the Powerwise™ family of energy efficient

solutions, the LMV1091 consumes only 600μA of

supply current providing superior performance over

DSP solutions consuming greater than ten times the

power.

•

Mobile Headset

Mobile and Handheld Two-way Radios

Bluetooth and Other Powered Headsets

Hand-held Voice Microphones

The dual microphone inputs and the processed signal

output are differential to provide excellent noise

immunity. The microphones are biased with an

internal low-noise bias supply.

KEY SPECIFICATIONS

•

Far Field Noise Suppression Electrical (FFNS_E

at f = 1kHz): 34dB (typ)

•

SNRI_E: 26dB (typ)

Supply Voltage: 2.7V to 5.5V

Supply Current: 600μA (typ)

Standby Current: 0.1μA (typ)

Signal-to-Noise Ratio (Voice band): 65dB (typ)

Total Harmonic Distortion + Noise: 0.1% (typ)

PSRR (217Hz): 99dB (typ)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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LMV1091TM/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LMV1091TMX/NOPB	TI	完全替代	具有噪声抑制功能的双输入麦克风前置放大器 \| YFQ \| 25 \| -40 to 85

与LMV1091TM/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LMV1091TMX	NSC	获取价格	Dual Input, Far Field Noise Suppression Microphone Amplifier
LMV1091TMX/NOPB	TI	获取价格	具有噪声抑制功能的双输入麦克风前置放大器 \| YFQ \| 25 \| -40 to 85
LMV1099	TI	获取价格	Uplink Far Field Noise Suppression & Downlink SNR Enhancing Microphone Amplifier with Earp
LMV1099TL	TI	获取价格	Uplink Far Field Noise Suppression & Downlink SNR Enhancing Microphone Amplifier with Earp
LMV1099TL/NOPB	TI	获取价格	Uplink Far Field Noise Suppression; Downlink SNR Enhancing Mic Amp w/ Earpiece Driver 25-D
LMV1099TLX	TI	获取价格	Uplink Far Field Noise Suppression & Downlink SNR Enhancing Microphone Amplifier with Earp
LMV110	NSC	获取价格	Fixed-Gain Amplifiers
LMV110M5	NSC	获取价格	Fixed-Gain Amplifiers
LMV110M5X	NSC	获取价格	Fixed-Gain Amplifiers
LMV110M7	NSC	获取价格	Fixed-Gain Amplifiers

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