Figure 3. MAX4062 Used to Bias a Microphone Connected to the Auxiliary Input and the Differential Input

2.2kΩ

2.2kΩ

AUX_IN

9

IN-

IN+

7

6

5

VCC

2.4V TO 5.5V

MAX4062

GND

8

G2

G1

0.1µF

0.1µF

1

10

RG

11kΩ

BIAS

VBIAS

0.1µF

0.1µF

4

x10

OUT

INT/AUX 2

3

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Analog Devices │ 12

MAX4060/MAX4061/

MAX4062

Differential Microphone Preamplifiers with

Internal Bias and Complete Shutdown