Analogue LM4861 Audio amplifier and interface PCB
$15-25 AUD / hour
PIC18F14K22 provides interface logic
The version LVC TV Interface 1711ver4 had problems of stability apparently due to the PTC thermal fuse.
So it was decided to revert to LM4861 audio and supplied by 5VDC.
1. Change U4 to 7808 same footprint L7805CDT-TR v1.5A 2V@(1A) Fixed 5V~5V Positive 1 35V TO-252-3 Linear Voltage Regulators (LDO)
2. Add 3.3V regulator type LP2981-33DBVR 100mA 375mV@(100mA) Fixed 3.3V~3.3V Positive 1 16V SOT-23-5 Linear Voltage Regulators (LDO):
3.3V is fir PIC and logic supply
5V DC is ONLY for the Audio amplifier.
3. Remove U2 (BA3121F-E2) and associated components
4. Remove U3 (TDA2822D) and associated components
5. Add LM4861 audio amplifier 8-Lead package D SOIC in place of TD2822D
5. Remove FB1 and net AGND
Project ID: #34439386
About the project
Awarded to:
Hi, I have many year experiences in Circuit, PCB design and Software, firmware development, so i can help you fulfill the project, please ib me for more details, Thanks & Regards.
Hi, good afternoon, I am an Electronics Engineer specializing in PCB design, I am proficient in using Altium Designer (currently have a valid license) and have vast experience designing PCBs for the embedded and mixed- More
27 freelancers are bidding on average $20/hour for this job
Hello, I've good experience designing electronic devices and programming, I can update your project in Altium designer. Let me know if you have any questions. Best regards,
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Good day, I have more than 30 years experience in PCB and Analogue LM4861 Audio amplifier design capabilities, I would be the best fit for your project. I can design interface PCB and Analogue LM4861 Audio amplifier in More
I have more than 9 years experience in embedded hardware and PCB design with eagle and altium design software . So I can do your job within a time limit with your satisfaction.
Hi, how are you. I have read the project description and i can do this JOB. Let us discuss it...........................
Hello. Nice to meet you. As an electronic engineer, I have been working in PCB design/layout and firmware programming field for 10+ years. Once you hire me, expected me to help your business like I 'm g More
Dear Client. Your project requirements were really interesting and I am 100% sure that you can complete the project. My best skills are PCB design and schematic design using Altium, KiCad, Eagle, Proteus, Solidworks. H More
Hello. do you will permanently link AGND and GND by removing FB1? the budget 60 USD. I will help you. -------------------------------------- Regards.
Hi there - I am an electronic designer with experience in both hardware and firmware design in the field of power electronic/microcontroller systems/analog electronics. I can do the activity in a couple of days. Do y More
Hello I understood your requirement but I have few doubts, text me so I can clear all my doubts right away, I can help you and i am ready for work. Thank you
Hi, I'm very experienced in designing complex PCB for over 25 years. I can do this job quick.. Any questions you can ask me.
HELLO DEAR CLIENT Am Experienced in ELECTRICAL , ELECTRONICS & COMPUTER ENGINEERING With a demonstrated History of Academia in the Field of Engineering. I have research, Design and Theoretical knowledge in; Electronic More
