China/中文Other/EnglishEurope/English
SGM4823
Single/Dual-Input, Fixed-Gain Microphone Amplifier with Integrated Bias
Single/Dual-Input, Fixed-Gain Microphone Amplifier with Integrated Bias
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.

PIN CONFIGURATIONS

1655953816888821.png

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

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

  • Wide Supply Voltage Range: 3.3V to 5.5V

  • Low Quiescent Current:

    0.1μA in Forced Shutdown Mode

    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

  • Automatic Switching between Low Power Monitor Mode and Low Noise Active Mode 

  • Latched Push-Pull Output to Wake Up External MCU in Sleeping Mode

  • -40 to +85 Operating Temperature Range

APPLICATIONS

Laptop Computers

Smart Phones

Digital Cameras

VCRs

ORDERING INFORMATION
Part Number Status Package Pins Pb-Free Temp Range
SGM4823B-23YMS10G/TR Production MSOP-10 10 Y Samples
规格书暂未发布,请联系sales_china@sg-micro.com申请规格书。
* 请使用公司后缀邮箱申请。在邮件中写明您的公司邮箱、联系电话、公司名称、职位/头衔、您申请规格书的准确料号、芯片应用项目、芯片应用产品可以帮助您加快获取速度。