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Infineon Audiohub Nano Analog
User Manual
About this document
Scope and purpose
The user manual provides information about using and evaluating Infineon analog XENSIV
microphones with the help of the Audiohub Nano Analog evaluation board. It familiarizes you with the
evaluation board and guides you through the initial set-up and measurement.
Intended audience
Design, verification, test and software engineers can use this document to get an understanding of the
functionality and connections of the Audiohub Nano evaluation board.
Table of contents
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 1
1
Introduction .......................................................................................................................... 2
1.1
Prerequisites ............................................................................................................................................ 2
1.1.1
Hardware ............................................................................................................................................ 2
1.1.2
Software ............................................................................................................................................. 2
2
Features ................................................................................................................................ 3
2.1
Summary of features ............................................................................................................................... 3
2.2
Block diagram .......................................................................................................................................... 3
3
Initial set-up .......................................................................................................................... 4
3.1
USB communication ............................................................................................................................... 4
3.2
Audacity software set-up ........................................................................................................................ 4
4
Evaluation board information.................................................................................................. 5
4.1
Connectors .............................................................................................................................................. 5
4.2
Test points ............................................................................................................................................... 6
4.3
Volume Unit (VU) meter display with onboard LEDs ............................................................................. 7
4.4
Operating mode and gain configuration with mode switch .................................................................. 7
Revision history.............................................................................................................................. 8
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
page 1 of 9
MEMS
TM
2022-07-28
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Related Manuals for Infineon Audiohub Nano Analog
Summary of Contents for Infineon Audiohub Nano Analog
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Page 1: Table Of Contents
The user manual provides information about using and evaluating Infineon analog XENSIV MEMS microphones with the help of the Audiohub Nano Analog evaluation board. It familiarizes you with the evaluation board and guides you through the initial set-up and measurement. -
Page 2: Introduction
Audiohub Nano Analog User Manual Introduction This document serves as a manual for the evaluation of up to two Infineon analog XENSIV MEMS microphones using the Audiohub Nano evaluation board. The evaluation board provides a USB audio interface to stream audio data from microphones with any audio recording and editing software. -
Page 3: Features
Four different gain configurations indicated by onboard LEDs (see section 4.4) • Volume unit meter indication by onboard LEDs (see section 4.3) • Powered through Micro-USB • Block diagram Figure 2 Audiohub Nano Analog block diagram 3 of 9 2022-07-28... -
Page 4: Initial Set-Up
Audacity is a free and open-source audio editor and recording application. Select the audio source as Audiohub Nano in the recording software, as shown in Figure 3. The recording channel can be selected as either mono or stereo. Figure 3 Recording from Audiohub Nano Analog in Audacity 4 of 9 2022-07-28... -
Page 5: Evaluation Board Information
The pinout of the pinheaders can be found on the back of the circuit board. The inputs IN+ and IN- are using a DC offset, provided by the MEMS microphones. Please note, without this DC offset the Audiohub Nano Analog does not work correctly. 5 of 9... -
Page 6: Test Points
Audiohub Nano Analog User Manual Test points Table 3 lists all the available test points for debugging on the Audiohub Nano evaluation board. Table 3 Test point description Test point Description 12MHz 12 MHz from oscillator Q1 25MHz 24.576 MHz clock of oscillator Q1 for I S interface 3.3 V digital power rail... -
Page 7: Volume Unit (Vu) Meter Display With Onboard Leds
Audiohub Nano Analog User Manual Volume Unit (VU) meter display with onboard LEDs The onboard LEDs turn on based on the measured sound pressure levels (dB SPL). The LEDs work as a volume unit (VU) meter when streaming the audio data. The threshold for the LED turn-on is based on the sound pressure level during the audio streaming, as shown in Table 4. -
Page 8: Revision History
Audiohub Nano Analog User Manual Revision history Document Date of release Description of changes version V1_0 2022-07-20 Initial release V1_1 2022-07-28 Included layout 8 of 9 2022-07-28... - Page 9 With respect to any examples, hints or any typical 81726 München, Germany values stated herein and/or any information WARNINGS regarding the application of the product, Infineon Technologies hereby disclaims any and all Due to technical requirements products may contain warranties and liabilities of any kind, including dangerous substances.