Develop an hardware USB audio ADC

€750-1500 EUR

クローズ

投稿日:

7年以上前

€750-1500 EUR

完了時にお支払い

Hi ! We are looking for someone to develop a USB 2.0 FS Audio Class 1.0 device, fully compatible with Windows, Android and iOS. - 1 Analog Mic Input @ 96kHz/16bits - If possible, 1 to 3 GPIOs - If possible, 1 Analog Output, lower resolution is ok - USB 2.0 Full Speed, Audio Class 1.0, asynchronous mode - Powered by USB / 50 mA max for ADC and controller. - Programmable USB product string (iProduct) and serial number (iSerialNumber) - Target Size : 35x35mm - Electronic part targeted price : under 12$ @ 1000pces - Delay : 1month for a working prototype/ demoboard The device is to be used for timing measurement purposes. The sampling frequency’s stability and precision are essentials. Therefore, the ADC clock will have to be generated by a TCXO and a real asynchronous mode (in terms of the USB Audio Class 1.0) communication must be established over USB. So, in the case of a microcontroller and a separate serial ADC, the ADC would have to be the master of the I2S communication, in order to guaranty the sample rate. Have a nice day !

Electrical Engineering

Electronics

Embedded Software

プロジェクト ID: 11716155

プロジェクトについて

7個の提案

リモートプロジェクト

アクティブ 7年前

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この仕事に7人のフリーランサーが、平均€968 EURで入札しています

@zarnescugeorge

Hello! I've designed systems like your for 6 years and I can help you right away! Please look also at my profile there you will find the boards that I designed and implemented and worked! Have a great day!

€750 EUR 14日以内

5.0

(84 レビュー)

7.1

@vw11221122

Hi i can design and make a sample __________________________________________________________________

€750 EUR 20日以内

4.4

(28 レビュー)

4.6

@mixdowninc

Good afternoon, and thank you for the opportunity to bid on your project! I'm an experienced embedded systems designer with over 20 years' experience, although I've only just started on the Freelancer platform. Your project has some very aggressive constraints that I'd like to discuss with you. I usually approach these projects with a milestone based approach, with the first milestone being the development of a comprehensive specifications document. With such a document in place we can both proceed more easily, as the development is very accurately described and we each understand and agree to them. To that end, my primary concern is with the overall size of the board. The necessity of an external 16-bit codec (since you also want an analog output) and TCXO means that it's very unlikely that these three components along with their support circuitry will be a tight fit in a 3.5cm square. The routing may necessitate a 6 or even 8 layer board to meet this size requirement. Please note that my proposal does not include the physical board, parts, nor assembly costs. I can recommend companies for these tasks or work with you in selecting companies to perform these tasks. Thank you again for the opportunity. I look forward to discussing this project with you! Regards, Andrew

€1,250 EUR 20日以内

5.0

(1 レビュー)

2.7

@leejuntsai

I want to accept the project,please give me this opportunity,thank you !

€932 EUR 7日以内

0.0

(0 レビュー)

0.0

@emworld

Hello, We are a team of embedded hardware and software professionals with experience in complete system design, development and prototyping. We do circuit design, schematic entry and PCB layout. Would like to know more details about the project. Looking forward to work on this project. Please feel free to contact us for any further discussions. Thanks and Regards EmWorld

€1,000 EUR 20日以内