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Part Number: LMV1088
Description: The LMV1088 amplifies near-field voice signals within 4cm of the microphones while rejecting far-field acoustic...
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LMV1088
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DataSheet
General Description
LMV1088 General Description
The LMV1088 amplifies near-field voice signals within 4cm of the microphones while rejecting far-field acoustic noise greater than 0.5m from the microphones. Up to 20dB of far-field rejection is possible in a properly configured and calibrated system.
Part of the Powerwise® family of energy efficient solutions, the LMV1088 consumes 1mA of supply current while providing superior performance to DSP solutions consuming over 10 times the power.
A fast calibration during the manufacturing test process allows the LMV1088 to compensate the entire microphone system. This calibration includes mismatch in microphone gain and frequency response, as well as acoustical path variances. The LMV1088 stores the calibration coefficients in on-board EEPROM. The calibration is initiated by I2C command or by pin control.
The dual microphone inputs are differential to provide excellent noise immunity. The microphones are biased with an internal low-noise bias supply.
Design Tools
| Title | Size in Kbytes | Date | |||
| LMV1088 Software (Windows XP/2000) allows control of the LMV1088 device and its operating modes | View | ||||
| LMV1088 Online Noise Reduction Demo | View | ||||
| LMV1088 Evaluation Manual, Gerber and Software | View |
If you have trouble printing or viewing PDF file(s), see Printing Problems. |
More Application Notes
| Title | Size in Kbytes | Date | |
| AN-1832: Application Note 1832 LMV1089 Noise Suppression Microphone Amplifier Demo Board User`s Guide | 2467 Kbytes | 17-Jun-09 | Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems. |
LMV1088 Maximum Ratings
| THD | 0.1 % |
| SNR | 60 dB |
| PSRR | 85 dB |
| Supply Min | 2.7 Volt |
| Supply Max | 5.5 Volt |
| User Supply | 3.3 Volt |
| Temperature Min | -40 deg C |
| Temperature Max | +85 deg C |
| PowerWise | Yes |
| View Using Catalog | |
LMV1088 Connection Diagram
LMV101
PDF/DataSheet Download
- Datasheet: LMV101
- File Size: 788168 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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- NSC [National Semiconductor]
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