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Maxim > Solutions > Cellular Handsets
Microphone Amplifiers
Maxim offers a wide variety of low-power, highly integrated microphone amplifiers that feature industry-leading PSRR and ultra-low THD+N.
An integrated microphone bias eliminates the need for an additional supply, simplifying system design and reducing solution cost. These amps are available in single and dual versions with single-ended or differential inputs.
The MAX9890 click-and-pop suppressor eliminates turn on/off transients that result in audible noises. The addition of this suppressor is essential to quiet audio performance when a conventional headphone amplifier with a large DC-blocking capacitor must be used.
| Key Specifications: Microphone Amplifiers |
| Part Number |
Channels |
VSUPPLY
(V) |
VSUPPLY
(V) |
IQ
(mA) |
THD+N
(%) |
en
(nV/√Hz) |
PSRR
(dB) |
Input Type |
Ext. Gain |
Fxd. Gain
(|V/V|) |
Fxd. Gain
(|V/V|) |
Microphone Bias |
| min |
max |
typ |
min |
min |
max |
| MAX9814 |
1 |
2.7 |
5.5 |
3.1 |
0.04 |
30 |
55 |
Single Ended |
No |
100 |
1000 |
Yes |
| MAX9812H |
1 |
4.5 |
5.5 |
0.23 |
0.015 |
40 |
100 |
No |
10 |
10 |
Yes |
| MAX9812L |
1 |
2.7 |
3.6 |
0.23 |
0.04 |
40 |
100 |
No |
10 |
10 |
Yes |
| MAX9813H |
2 |
4.5 |
5.5 |
0.23 |
0.015 |
40 |
100 |
No |
10 |
10 |
Yes |
| MAX9813L |
2 |
2.7 |
3.6 |
0.23 |
0.04 |
40 |
100 |
No |
10 |
10 |
Yes |
| MAX4465 |
1 |
2.4 |
5.5 |
0.024 |
0.02 |
80 |
112 |
Yes |
- |
- |
No |
| MAX4466 |
1 |
2.4 |
5.5 |
0.024 |
0.03 |
80 |
112 |
Yes |
- |
- |
No |
| MAX4467 |
1 |
2.4 |
5.5 |
0.024 |
0.02 |
80 |
112 |
Yes |
- |
- |
Yes |
| MAX4468 |
1 |
2.4 |
5.5 |
0.024 |
0.03 |
80 |
112 |
Yes |
- |
- |
Yes |
| MAX4469 |
2 |
2.4 |
5.5 |
0.024 |
0.02 |
80 |
112 |
Yes |
- |
- |
No |
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See All Microphone Amplifiers (14)
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