LMV1090 - Dual Input, Far Field Noise Suppression Microphone Amplifier from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Knowledge Base

Features
•No loss of voice intelligibility
•No added processing delay
•Low power consumption
•Differential outputs
•Excellent RF immunity
•Adjustable 12 - 54dB gain
•Shutdown function
•Space-saving 16–bump micro SMD package

Key Specification

Far Field Noise Suppression Electrical *

34dB (typ)

SNRIE

26dB (typ)

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)

   *FFNSE at f = 1kHz

General Description

The LMV1090 is a fully analog dual differential input, differential output, microphone array amplifier designed to reduce background acoustic noise, while delivering superb speech clarity in voice communication applications.

The LMV1090 preserves near-field voice signals within 4cm of the microphones while rejecting far-field acoustic noise greater than 50cm from the microphones. More...


Applications

•Mobile headset
•Mobile and handheld two-way radios
•Bluetooth and other powered headsets
•Hand-held voice microphones
•Cell phones
  Typical Application
click for larger image


ParametersValues
SNR 65 dB
Interface I2C
Supply Current Per Channel 0.60 mA
Supply Min 2.7 Volt
Supply Max 5.5 Volt
Special Features Analog Noise Reduction (Uplink)
Temperature Min -40 deg C
Temperature Max +85 deg C
PowerWise Yes


Typical Performance

click for larger image


  Also Recommended
LMV1088Improved Performance
LMV1089Improved Performance
Additional Resources
Design Tools


Block Diagram

click for larger image

LMV1089 application gain budget

Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LMV1090 Dual Input, Far Field Noise Suppression Microphone Amplifier 865
Kbytes		 29-Oct-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LMV1090TLEVALevaluation boardFull productionN/A
 
Buy Now 		1+$150.001-
N/AN/A
LMV1090TLMICRO SMD16NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		100+$3.99reel
of
250		XYTT
I ZA3
6 weeks2000
LMV1090TLXMICRO SMD16NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		100+$3.99reel
of
3000		XYTT
I ZA3
6 weeks5000

General Description

The LMV1090 is a fully analog dual differential input, differential output, microphone array amplifier designed to reduce background acoustic noise, while delivering superb speech clarity in voice communication applications.

The LMV1090 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 microphones.

Part of the Powerwise™ family of energy efficient solutions, the LMV1090 consumes only 600μA of supply current providing superior performance over DSP solutions consuming greater than ten times the power.

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.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMV1090TLCMOS70184060010890004309006723
LMV1090TLXCMOS70184060010890004309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
LMV1090 Software (Windows) Controls the LMV1090 and Its Operating Modes 259 Kbytes 15-Jun-2009 View Download  

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1948: Application Note 1948 LMV1090 Noise Suppression Microphone Amplifier Evaluation Kit User`s Guide 4181
Kbytes		 1-Jul-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]