ThomasNet Industrial Newsroom -

Plenum Amplifier suits commercial/educational environments.

info@productnews.com (ThomasNet News) — Mon, 09 Nov 2009 08:39:43 -0500

Compact, 18 V, 45 W, plenum rated amplifier/mixer, model PlenumAmp PMA-245 accepts both RCA and 3.5 mm stereo inputs. With independent mixer volume controls for each source, unit is designed for use with data projectors. Built-in noise filtration circuitry ensures clear audio performance. Measuring 5.43 x 1.65 x 4.80 in., chassis features heat-sink to dissipate heat effectively.

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Stereo Subsystem provides rich audio from li-ion battery.

info@productnews.com (ThomasNet News) — Fri, 06 Nov 2009 08:43:05 -0500

Supplied in 2.5 x 3 mm UCSP(TM), MAX9879 combines stereo Class D speaker amp, DirectDrive® stereo headphone amp, and analog bypass switch. Class D amplifier technologies provide Class AB audio performance with Class D efficiency. Able to deliver 715 mW output power from 3.7 V supply into 8 ohm load with 88% max efficiency, product also features input mixing, volume control, click-and-pop suppression, and flexible, user-defined input architecture with preamplifier gain settings.

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Power Amplifier aids in measuring sound insulation or reverberation time.

info@productnews.com (ThomasNet News) — Fri, 30 Oct 2009 08:45:08 -0500

Class D amplifier, Model 2734-B weighs less than 7 kg and has high power output to deliver up to 500 W to associated sound source. Built-in pink and white noise generator can be controlled manually or by wireless remote control option for Type 2250, 2270 and 2260 hand-held analysers. Calibrated controls and level indicator lamps aid in restoring settings, while indicator lamps also serve to protect sound source from excessive signal levels.

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Audio Subsystem IC enhances 3D sound experience.

info@productnews.com (ThomasNet News) — Thu, 15 Oct 2009 08:34:30 -0500

Supplied in 5 x 5 mm lead-free QFN32 package, TS4982 integrates adjustable 3D sound enhancement circuitry that allows closely spaced speakers to deliver greater stereo spatial effects. Other IC elements include 2 x 2 W stereo speaker driver, 125 mW stereo headphone driver, 4-step digital volume control, pop-and-click reduction circuitry, and PC-beep pass-through capability. Device draws 10 nA in shutdown mode, promoting runtime in battery-powered devices.

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Search for suppliers of: Audio Amplifiers | Audio Frequency (AF) Amplifiers

Audio Power Amplifier IC delivers 100 W peak output.

info@productnews.com (ThomasNet News) — Fri, 09 Oct 2009 08:23:50 -0500

Housed in single 64QFN package and operating directly from 0.8-1.8 V supply, Model AS1001 enables battery-powered amplified speakers to run 3 hours per day for 10 months. IC uses patented techniques to minimize both fixed power losses and output-dependent variable power losses. With power rail switching, amplifier operates efficiently from low voltage rail, with DC-DC boost converter driving higher voltage transistors on extreme audio peaks.

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Class D Audio Amp integrates digital PDM interface.

info@productnews.com (ThomasNet News) — Fri, 02 Oct 2009 08:29:24 -0500

Suited for handset and portable device manufacturers, SSM2517 Class D amplifier combines audio DAC, power amp, and PDM (pulse density modulation) digital interface in one 1.5 x 1.5 mm, 9-ball WLCSP. Effect of GSM interference or other sources of electrically coupled noise are minimized, because audio is transmitted digitally to product. Package size and filterless design minimize board space requirements, and nominal power efficiency is rated at 90%.

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Search for suppliers of: Audio Frequency (AF) Amplifiers

Audio Op Amp delivers low noise and distortion.

info@productnews.com (ThomasNet News) — Mon, 21 Sep 2009 08:32:47 -0500

Housed in SO-8 package, Model OPA1612 achieves 1.1 nV √Hz noise density with ultra-low distortion of 0.000015% at 1 kHz. Rail-to-rail output swing to within 600 mV with 2 W load maximizes dynamic range. Featuring wide supply range of ±2.25 to ±18 V from 3.6 mA of supply current per channel, dual-channel, bipolar-input op amp is suited for professional audio and broadcast studio equipment, microphone pre-amplifiers, and A/V receivers.

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Class-D Amplifier IC addresses TV/Hi-Fi audio performance.

info@productnews.com (ThomasNet News) — Wed, 16 Sep 2009 08:23:30 -0500

As 50 W + 50 W stereo class-D amplifier IC, TDA7492 uses sixth-generation BCD6S (Bipolar/CMOS/DMOS) process that allows analog, logic, and high-voltage functions on one chip. BCD6S process promotes efficiency while simultaneously reducing crosstalk and also enables complementary NMOS and PMOS transistors in high-power output circuitry. Along with THD+N below 0.01%, features include built-in output filtering, integrated standby and mute functions, as well as external synchronization.

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Audio Amplifier reduces consumer audio system complexity.

info@productnews.com (ThomasNet News) — Fri, 11 Sep 2009 08:35:08 -0500

Supplied in 28-pin TSSOP, TPA3110D2 is 15 W stereo, true filter-free, analog-input, Class-D audio amplifier with integrated EMI suppression technology that eliminates need for inductor-based output filters. SpeakerGuard(TM) protection circuitry prevents speakers from being overdriven or damaged by DC currents, while THD+N performance of less than 0.1% over full power range at 1 kHz and click-and-pop suppression circuitry lend to optimal audio performance and fidelity.

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Audio Amplifiers combine high efficiency/RF immunity.

info@productnews.com (ThomasNet News) — Fri, 11 Sep 2009 08:35:07 -0500

Model ISL99201 is mono Class D amplifier that delivers up to 2.5 W into 4 W load and operates with 86% efficiency at 400 mW into 8 W, with signal-to-noise ratio better than 95 dB. Featuring operating voltage of 2.4-5.5 V, ISL99202 stereo cap-free headphone amplifier supports 16-600 W speaker impedance and prevents bursts at 217 Hz from interfering with audio output. Both offer click-and-pop suppression as well as undervoltage/short circuit protection.

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Stereo Audio IC suits portable multimedia applications.

info@productnews.com (ThomasNet News) — Fri, 29 May 2009 08:15:24 -0500

Supplied in 5 x 5 mm, 32-pin QFN package, AT73C240 integrates 20-bit stereo DAC with 90 dB dynamic range and 1 W (max) audio power amp. Stereo DAC comprises multi-bit sigma-delta modulator with dither, continuous time analog filters, and analog output drive circuitry. Master clock is 256 or 384 times sampling frequency, allowing choice of input data rate up to 50 kHz. Also, stereo 32 ohm headset drivers include programmable volume control, mute function, and mixer for stereo inputs.

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Audio Amplifier optimizes battery life in portable devices.

info@productnews.com (ThomasNet News) — Tue, 12 May 2009 08:43:01 -0500

Model AAT5101 2.5 W Class D audio amplifier operates from 2.1-5.5 V supply voltage and delivers up to 92% efficiency and offers 0.06 µA shutdown current and 1.35 mA quiescent current. It features low noise, filterless PWM architecture and outputs 1.35 W with 8 W load and THD+N of less than 1% and 2.5 W with 4 W load and THD+N below 10%. Operating across -40 to +85°C temperature range, it features thermal and short circuit protection circuitry with self-recovery.

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Search for suppliers of: Monolithic Amplifiers | Audio Frequency (AF) Amplifiers

Driver IC targets Class D audio applications from 50-150 W.

info@productnews.com (ThomasNet News) — Wed, 29 Apr 2009 08:28:53 -0500

Based upon half bridge topology, 200 V Model IRS2093 integrates 4-channels of Class D audio amplifier drivers, error amplifier, gate driver, and 800 kHz analog PWM modulator in single IC. Device includes programmable bidirectional over-current protection with self-reset control, under-voltage lockout protection, and programmable preset deadtime. Housed in MLPQ48 package, IC is suited for home theater systems and car audio amplifiers.

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Stereo Headphone Amplifier doubles audio playback time.

info@productnews.com (ThomasNet News) — Mon, 20 Apr 2009 08:29:41 -0500

Housed in 1.7 x 1.7 x 0.4 mm-pitch micro SMD package, PowerWise® LM48824 Class G Amplifier draws 0.9 mA quiescent current to double audio playback time of smart phones, mobile phones, and portable music players. Unit includes 32-step I2C compatible volume control with mute and delivers 37 mW/channel into 16 W load with less than 1% THD+N at 3.6 V. High PSRR of 105 dB at 217 Hz enables device to operate in noisy environments without additional power supply conditioning.

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Search for suppliers of: Audio Frequency (AF) Amplifiers

Class D Audio Subsystems simplify portable product designs.

info@productnews.com (ThomasNet News) — Thu, 16 Apr 2009 08:38:09 -0500

Mixed-signal audio subsystem (LM49352) integrates audio codec functionality with ground-referenced headphone amps, earpiece driver, Class D loudspeaker, and audio DSP in 3.3 x 3.3 mm package. Analog subsystem (LM49151) integrates earpiece driver, Class D loudspeaker, ground-referenced headphone amps, and automatic level control (ALC) in 2.2 x 2.6 mm package. Applications include smart phones, full-featured phones, portable gaming devices, and portable GPS devices.

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Audio Power Amplifiers offer optimized sound performance.

info@productnews.com (ThomasNet News) — Wed, 25 Mar 2009 08:30:30 -0500

Models TAS5709 and TAS5710 digital-input amplifiers combine 32-bit audio processing with 20 W stereo output power. Units include speaker equalization, with up to 9 biquad filters/channel, and store up to 3 sets of biquad coefficients to optimize performance. Dual-band dynamic range control with selectable threshold, attack, and decay protects speakers from damage and stops bass rattling of cabinet/enclosure. Also, 2-channel I2S input allows direct connection to digital processor.

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Search for suppliers of: Power Amplifiers | Digital Amplifiers | Audio Frequency (AF) Amplifiers

Portable Stereo Amplifier provides 2.8 W/channel.

info@productnews.com (ThomasNet News) — Thu, 12 Mar 2009 08:28:59 -0500

Model TS4999, 2-channel class D stereo audio amplifier IC features 3D audio that creates effect of wide channel separation. Selectable 3D modes allow audio image to be focused behind, above, or below listener. Unit delivers up to 2.8 W/channel into 4 W speaker loads and achieves distortion of 1%, with high power-supply rejection ratio preventing supply noise from entering audio signal. It has 10 nA power-saving mode minimizing battery drain when audio features are not in use.

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Search for suppliers of: Application Specific Integrated Circuits (ASIC) | Audio Frequency (AF) Amplifiers

Class D Audio Subsystem ICs are Windows Vista compliant.

info@productnews.com (ThomasNet News) — Mon, 23 Feb 2009 08:33:15 -0500

Suited for space-constrained applications, MAX9791/MAX9792 audio-subsystem ICs combine 2 W stereo or 3 W mono Class D speaker amplifier, stereo DirectDrive® headphone amplifier, and one 120 mA low-dropout (LDO) regulator in single 4 x 4 mm chip. Low-EMI design reduces interference with radios found in notebook PCs, while low RF susceptibility ensures operation in close proximity to wireless applications. Devices are specified over -40 to +85°C extended temperature range.

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Digital Amplifier supports IIS digital audio signal input.

info@productnews.com (ThomasNet News) — Mon, 26 Jan 2009 08:37:57 -0500

Featuring built-in 24-bit audio DSP, R2J15116FP delivers stereo output to 2 speakers at up to 15 W/channel, and is intended for use in thin flat-screen TVs employing LCD or plasma display panels. It features compact package measuring 7 x 7 mm, uses feedback circuit to stabilize output level during voltage fluctuations, while it's DSP also performs processing for volume control and parametric equalizer. Product also features overcurrent, overheating, and low voltage protection.

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Search for suppliers of: Audio Amplifiers | Digital Amplifiers

Digital Audio IC combines processing and amplification.

info@productnews.com (ThomasNet News) — Thu, 15 Jan 2009 08:35:08 -0500

Sound Terminal(TM) model STA339BWS utilizes techniques such as Full Flexible Amplification (FFX) to enable fully digital stream from sound source to loudspeaker, promoting audio performance and reducing size for home-audio equipment using small speakers, such as flat-panel TVs and docking stations. Solution combines IP from audio processing and class-D power amp ICs into one chip and includes features such as MultiBand Dynamic Range Compression and 7-band equalizer.

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