Audio Amp Squelches Input Noise

Nov. 7, 2005
The TS4994, a differential audio power amplifier, delivers up to 1.2W of continuous power into an 8Ω load at 5V with a total harmonic distortion of 1% at 1 kHz. Reducing input noise, the device specifies a common-mode rejection of 85 dB and a

The TS4994, a differential audio power amplifier, delivers up to 1.2W of continuous power into an 8Ω load at 5V with a total harmonic distortion of 1% at 1 kHz. Reducing input noise, the device specifies a common-mode rejection of 85 dB and a power-supply rejection ratio of 100 dB, both at 217 Hz with grounded inputs. Operating voltage ranges from 2.5V to 5.5V, and the chip's standby mode can be programmed via an external signal to be either active high or low. Standby power consumption is 10 nA and start-up time is 15 ms. Other features include thermal shutdown protection and common-mode feedback circuitry that allows the outputs to be biased to half the supply voltage, regardless of input common-mode voltage. Available in a nine-bump, 0.5-mm pitch flip-chip package as a DFN10 or MiniSO-8, price is $0.60 each/5,000. STMICROELECTRONICS INC., Lexington, MA. (781) 861-2650.

Company: STMICROELECTRONICS INC.

Product URL: Click here for more information

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!