ARC Digital Amplifier
The ARC was designed to bridge the gap between high-end sound quality and the world of digital music. This ultra-compact system provides high-resolution USB audio and high quality aptX Bluetooth audio for an astonishingly detailed sound. Fully integrated with the latest in class-D amplifier technology, the ARC is a complete high-end digital audio system. For a great listening experience and immersive sound, ...
Read more ›Introduction to OPAMPs and Applications
Operational amplifiers (OPAMPs) are high performance differential amplifiers in integrated form that can be used in many different ways. A typical OPAMP has a non-inverting input, an inverting input, two dc power pins, one output pin and a few other fine-tuning pins. On the following image you can see a typical diagram of an operational amplifier. The basic OPAMP operation is simple. If the voltage applied ...
Read more ›Comparing the NE555 Timer and LM386 Amplifier as Inductorless DC-DC Converters
The bipolar NE555 timer IC is widely used in inductorless dc-dc converters, most frequently in doubling and inverting converters. However, another very popular IC, the LM386 audio amplifier, may be a better solution in this application. Note that the results also depend on the specific manufacturer of these multisourced ICs and on the quality of the related components. (We will use only Schottky diodes, to ...
Read more ›5.5W – 2 Channel Audio Amplifier
Description The small 2 Channel amplifier constructed around Sanyos LA4445 IC delivers 5.5Watts +5.5 Watts at 4 ohm load, supply in 12V DC 2Amp, Input impedance 30K. Specifications Dual Channels output : 5.5W Minimum External Parts Very small pop noise at the time of power supply ON/OFF Good ripple rejections Small residual noise Built-in protectors 1. Thermal Protector 2. Overvoltage Surge Protector Stand ...
Read more ›Mini Audio Amplifier
Description The Mini Audio Amplifier project is a good choice for battery operated gadgets. It is based on Texas instruments LM386 IC, provides high quality Audio. Specifications Wide power supply input 6 to 12 VDC 500 mW output @ 8 Ohms load Takes standard audio signal as input Low quiescent current drain 4 mA IC The quiescent power drain is only 24 mW when operating from 6 VDC Onboard preset for volume a ...
Read more ›20W Bridge Audio Amplifier
20W Bridge Audio Amplifier project, based on the TDA2005 IC, The TDA 2005 IC is class B dual audio amplifier, specifically designed for car radio applications etc. Specifications: Power supply input : 18 VDC Output power : 20 W, 4 Ω IC built in Thermal Shut-down, Load dump voltage surge protected Terminal pins for connecting left and right audio signal inputs Berg Connector for connecting Potentiometer (POT ...
Read more ›14W Stereo Audio Amplifier
Description 14W Stereo audio power amplifier build around LM4730 IC. The LM4730 is stereo audio amplifier capable of delivering typical 14W per channel of continues average output power a 4 Ohms or 8 Ohms load with less than 10% THD+N from 20Hz to 20Khz frequency. Each amplifier has an independent smooth transition fade-in/out mute and a power conserving standby mode which can be controlled by onboard slid ...
Read more ›50W Power Amplifier with LM3886
Description This is my second encounter with LM3886. I was pleased of the sound this chip produced the first time, so I decided to make another amplifier with it. The schematic is based on the schematic in the datasheet of the chip with minor changes. I removed the time delay capacitor connected to MUTE pin, because it’s better to use separate DC protection schematic which has similar functionality. I made ...
Read more ›Audio Power Amplifier with TDA2050
This project is an audio amplifier based on TDA2050 and LM1875. This is not an ordinary project, but an attempt to make a PCB that is suitable for TDA2050 and LM1875 and has all the necessary circuitry on board – power supply, speaker protection, delayed turn-on and fast turn-off. This is achieved using the convenient uPC1237 IC. TDA2050 and LM1875 are pin to pin compatible, the differences in their schemat ...
Read more ›ADI shrinks package size of 16-bit DACs
The AD5689R nanoDAC+™ is a dual, 16-bit, rail-to-rail, voltage output DACs. The device includes a 2.5 V, 2 ppm/°C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The device operates from a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design, and exhibits less than 0.1% FSR gain error and 1.5 mV offset error performan ...
Read more ›Two AA cell instrumentation amplifier for body networks
The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors. The AD8237 employs the indirect current feedback architecture to achieve a true rail-to-rail capability. Unlike conventional in- ...
Read more ›5W Stereo Audio Amplifier
Description 5W Stereo Audio Amplifier project based on BA5406 IC which is suitable for application like stereo radio cassette player, stereo components systems etc. The Heart of the project, BA5406 is a dual OTL monolithic power IC with two built-in, high output speaker amplifier circuits. High output of 5W×2 can be produced when VCC=12 V and RL=3Ω, and 2.8 W×2 when VCC=9V and RL=3Ω. The BA5406, which uses ...
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