15815503065
SGM4826 音频功率放大器IC
品牌1: SGM/圣邦微
工作电压: 2.7-5.5V
固定增益: 20dB
应用: 笔记本电脑
报价: 0.50元/个
最小起订: 3000 个
库存: 9999990000 个
发货期限: 自买家付款之日起 2 天内发货
有效期至: 长期有效
发布时间: 2023-03-29 13:29
浏览次数: 101
手机号: 15815503065
电话: 0755-83538626
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详细信息

GENERAL DEscriptION

The SGM4822/SGM4825 (single-input) and SGM4823/SGM4826 (dual-input) are low noise, low power, rail-to-rail, fixed-gain microphone amplifiers with integrated bias. The SGM4822/SGM4823 support power supply voltage from 3.3V to 5.5V and the SGM4825/SGM4826 support wide power supply voltage from 2.7V to 5.5V. The devices are suitable for portable audio applications. They feature low THD+N = 0.009% in active mode, 2.6MHz bandwidth and forced shutdown mode.

The SGM4822/SGM4823 power-saving features include automatic switching between low power monitor mode and low noise active mode, and the devices also provide latched push-pull output to wake up external MCU in sleeping mode. Two inputs of the SGM4823/SGM4826 allow two microphones to be multiplexed into one output.

The devices operate over an ambient temperature range of -40 to +85.

FEATURES

  • Very Low Noise: 30nV/√Hz at 1kHz, Gain = 20dB

  • Very Low THD+N: 0.009%, Gain = 20dB

  • Wide Supply Voltage Range: 2.7V to 5.5V

  • Low Current:

    4μA in Monitor Mode at VCC = 3.3V

    660μA in Active Mode

  • Low Noise Microphone Bias Voltage: 2.3V

  • Rail-to-Rail Outputs

  • 20dB Fixed-Gain

  • -40 to +85 Operating Temperature Range

APPLICATIONS

Laptop Computers

Smart Phones

Digital Cameras

VCRs



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