LM48823UR

• Low power consumption
• Shutdown function
• No processing delays are added
• Differential inputs and outputs
• Automatic calibration
• Adjustable 6 - 48 dB gain
• Excellent RF suppression
• Space-saving 36-ball micro SMD package

illustrate

The LMV1089 is a fully analog dual differential input, differential output, microphone array amplifier designed to reduce background noise while providing superior voice communication application speech clarity.

The microphone within the retained LMV1089 4 cm near-field voice signal while rejecting far-field noise larger than 50 cm. Far-field rejection of up to 20 dB is possible in a properly configured and calibrated system.

Part of PowerWise's™ family of energy-efficient solutions, LMV1089 consumes only the supply current and delivers superior performance for DSP power solutions with a DSP consumption greater than 1.1 milliamps.

During the period, the entire microphone system is quickly calibrated and compensated for during the LMV1089 product manufacturing and testing process. This calibration compensates for microphone gain and frequency response, as well as acoustic path differences mismatch. This LMV1089 is stored in the calibration factor of the EEPROM on the chip. The calibration was initiated by me 2 C command or by logic control pin.

The dual microphone input and processed signal are differential outputs to provide superior immunity to interference. The microphone is biased, with an internal low-noise bias power supply.

Key specifications:

apply

• Headset and microphone arm
• Mobile phones and two-way radio communication equipment
• Bluetooth headset and other power supply
• The sound of holding a microphone
• Balanced stereo mic preamp