Single/Dual-Input, Fixed-Gain Microphone Amplifier with Integrated Bias

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 • Very Low Noise: 30nV/√Hz at 1kHz, Gain = 20dB\n\n• Very Low THD+N: 0.009%, Gain = 20dB\n\n• Wide Supply Voltage Range: 2.7V to 5.5V\n\n• Low Quiescent Current:\n4μA in Monitor Mode at VCC = 3.3V\n660μA in Active Mode\n\n• Low Noise Microphone Bias Voltage: 2.3V\n\n• Rail-to-Rail Outputs\n\n• 2;

SGMICRO

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