usb-microphone
VladyslavKukharchuk
This repository contains the schematic for a USB-powered microphone module designed in KiCad. The circuit is based on the MAX9814 microphone amplifier and PCM2906 USB audio codec.
Components (22)
| Reference | Value | Description |
|---|---|---|
| U1 | MAX9814 | Microphone Amplifier with AGC and Low-Noise Microphone Bias, TDFN-14 |
| U2 | PCM2906CDBR | |
| U3 | TCR2EE27 | 200mA Low-dropout Voltage Regulator, Vout 2.7V, Vin up to 5.5V, SOT-553 |
| U4 | MIC5365-3.0YD5 | 150mA Low-dropout Voltage Regulator, Vout 3.3V, Vin up to 5.5V, TSOT-23-5 |
| C1,C3,C6 | 0.1uf | Unpolarized capacitor |
| C2 | 0.47uf | Unpolarized capacitor |
| C4 | 2.2uf | Unpolarized capacitor |
| C5,C9-C12,C15-C17 | 1uf | Unpolarized capacitor |
| C7,C8 | 10uf | Polarized capacitor, small symbol |
| C13,C14 | 30pf | Unpolarized capacitor |
| J1 | Gain Jumper | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | BIAS Jumper | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J3 |