- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频放大器 - 麦克风前置放大器
- 功能描述：具有噪声抑制功能的双输入麦克风前置放大器
- 点击这里打开及下载LMV1091的技术文档资料
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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.
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.
- No Loss of Voice Intelligibility
- Low Power Consumption
- Shutdown Function
- No added Processing Delay
- Differential Outputs
- Adjustable 12 - 54dB Gain
- Excellent RF Immunity
- Available in a 25–Bump DSBGA Package
- Far Field Noise Suppression Electrical (FFNSE at f = 1kHz): 34dB (typ)
- SNRIE: 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)
All trademarks are the property of their respective owners.
- Gain range (dB)
- 36 dB
- Power supply (Typ) (V)
- 2.7V to 5.5V
- Iq (Typ) (mA)
- 0.6
- Interface type
- Analog
- Operating temperature range (C)
- -40 to 85
- Rating
- Catalog
LMV1091的完整型号有：LMV1091TM/NOPB、LMV1091TMX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMV1091TM/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LMV1091TM/NOPB的批量USD价格：1.383（1000+）
LMV1091TMX/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LMV1091TMX/NOPB的批量USD价格：1.185（1000+）
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