The LMV1091 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 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.
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
| LMV1088 | LMV1089 | LMV1090 | LMV1091 | |
| Function | Beamforming | Beamforming | Beamforming | Beamforming |
| Special Features | Auto-calibration | Auto-calibration | I2C Controlled | Pin-Programmable Version of LMV1090 |
| Mono/Stereo | Mono | Mono | Mono | Mono |
| Auto Calibration | Yes | Yes | ||
| Output Type | Single-Ended | Differential | Differential | Differential |
| Shutdown | Yes | Yes | ||
| FFNRI (dB) | 32 | 32 | 34 | 34 |
| Supply Current (mA) | 1 | 1.1 | 0.6 | 0.6 |
| SNRI (dB) | 24 | 24 | 26 | 26 |
| THD (%) | 0.1 | 0.1 | 0.1 | 0.1 |
| Uplink | Yes | Yes | Yes | Yes |
