Product Description

Microphone Amplifier Module with Integrated Bias

Power Supply: MAX9813H - 4.5V to 5.5V

Extended Temperature Range: -40°C to +85°C

Product Description:

MAX9812/MAX9813 are single/dual input, 20dB fixed gain microphone amplifiers. They offer aging and low noise in a small package with integrated microphone bias, making them ideal for portable audio applications such as notebook computers, cell phones and PDAs. These amplifiers feature 500kHz bandwidth, rail-to-rail output, industry-leading 100dB power supply rejection ratio and an extremely low

0.015% THD+N. Energy-saving features include an extremely low 230 microamp supply current and a total shutdown mode that reduces the combined supply and bias current to only 100nA. The MAX9812 is a single amplifier in a 6-pin S.C70 package (2mm x 2.1mm) and the 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 one output. The MAX9812/MAX9813 are available in two

grades.

The MAX9812L/MAX9813L are optimized for 3.3V supply operation (2.7V to 3.6V). The MAX9812H/MAX9813H are PC2001 compliant and optimized for 5V operation (4.5V to 5.5V). Both devices are specified over the -40°C to +85°C extended operating temperature range.

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