CS4871

The CS4871 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V power supply. To conserve power in portable applications, the CS4871’s micro-power shutdown mode (IQ =0.6μA, typ) is activated when VDD is applied to the SHUTDOWN pin. Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external components and operate on low supply voltages from 2.0V to 5.5V. Since the CS4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it isideally suited for low-power portable systems that require minimum volume and weight. AdditionalCS4871 features include thermal shutdown protection, unity-gain stability, and external gain set.

The CS4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2) with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the CS4863 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip. The CS4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on

GW2308 is a Class AB stereo headphone driver chip utilizing CMOS Technology specially designed for portable digital audio applications. It has lower power consumption and lower harmonic distortion. Under a 8 ohm load, when THD = 10%, the single channel can provide 300mW of output power, it mainly used in the Walkman, portable audio, HI-FI sound system, CD-ROM.

AiP2112 is an audio driver with adjustable gain, especially designed for set-top box and HD-player. It possesses the best audio driver performance. A few external components not only lower the cost but also reduce the noise. The 2Vms stereo audio driver is designed to eliminate coupling capacitors and has a gain range of +1V/V to +10V/V in differential mode with a 3.3v supply voltage and 10KΩ load. And the gain ranges can all be achieved by adjusting external resistors. AiP2112 has a built-in muting circuit to solve the bursting sound during power on/off. And the circuit has an external low voltage detection function. AiP2112 is mainly applied in set-top boxes, HD DVD players, car audio, medical and other systems.

The AiP9722A Stereo Headphone Amplifier are designed for portable equipment where board space is at a premium. AiP9722A/B use a unique Direct Drive structure, in a single power supply can produce ground-referenced output, eliminating the need for large-capacity DC blocking capacitor. AiP9722A Each channel can provide 70mW of power to 16Ω load or 130mW of power to 32Ω load, and THD + N is only 0.009%. The 217Hz frequency has a power supply rejection ratio of 80dB (PSRR), allowing the device to operate under noisy digital power supplies without the need for additional linear regulators. The full "click/pop" sound suppression circuit can inhibit the "click/pop" sound during startup and shutdown. The low power shutdown mode reduces the supply current to 0.1μA. AiP9722A for the external resistor to adjust the gain.

The AiP9722B Stereo Headphone Amplifier are designed for portable equipment where board space is at a premium. AiP9722B uses a unique Direct Drive structure, in a single power supply can produce ground-referenced output, eliminating the need for large-capacity DC blocking capacitor. AiP9722B Each channel can provide 70mW of power to 16Ω load or 130mW of power to 32Ω load, and THD + N is only 0.009%. The 217Hz frequency has a power supply rejection ratio of 80dB (PSRR), allowing the device to operate under noisy digital power supplies without the need for additional linear regulators. The full "click/pop" sound suppression circuit can inhibit the "click/pop" sound during startup and shutdown. The low power shutdown mode reduces the supply current to 0.1μA. AiP9722B for the built-in fixed -2V/V gain.