Description:
The MAX9812/MAX9813 are single/dual-input, 20dB fixed-gain microphone amplifiers. They offer tiny packaging and a low-noise, integrated microphone bias, making them ideal for portable audio applications such as notebook computers, cell phones, and PDAs. These amplifiers feature a 500kHz bandwidth, rail-to-rail outputs, an industry-leading 100dB power supply rejection ratio, and a very low 0.015% THD+N. Power-saving features include very low 230μA supply current and a total shutdown mode that cuts the combined supply and BIAS currents to only 100nA.
MAX9813 is a dual input amplifier available in an 8-pin SOT23 (3mm x 3mm) package. The MAX9813 has two inputs allowing two microphones to be multiplexed to a single output.
Application:
Notebook Computers
PDAs
Smart Phones
Digital Cameras
Video Tape Recorders
Features:
Board Operating voltage: DC 3.3V-3.6V
Interface pad spacing 2.54MM
size:15mm * 10mm
Very Low 230μA Quiescent Current
Low 0.015% THD+N
MAX9812L/MAX9813L—2.7V to 3.6V
Internal Low-Noise Microphone Bias Supply
2.3V for MAX9812L/MAX9813L
4.0V for MAX9812H/MAX9813H
100nA Low-Power Shutdown Mode
Rail-to-Rail Outputs
20dB Fixed Gain
Extended Temperature Range -40°C to +85°C