One stop electronic component supply Original HT6818 3.3W ultra-low EMI anti chip stereo D-class audio power amplifier TSSOP20

Product Descriptions

HT6818 is a stereo output free filter D-class audio power amplifier with ultra-low EMI and anti clipping distortion function. It outputs up to 3.3W of power under power supply voltage of 5V, THD+N=10%, and 4 Ω load conditions, maintaining high efficiency in various audio terminal applications and providing high fidelity and low noise performance of AB class amplifiers.

The AROC radiation and conducted interference suppression circuit gives HT6818 excellent full bandwidth low radiation performance, and its radiation level is far below the FCC Part 15 Class B standard without auxiliary filtering design and an output horn line length of 20cm.

The anti distortion function of HT6818 can detect and suppress output distortion caused by excessive amplitude of music and voice signals or decreased battery voltage, significantly improving sound quality, creating a comfortable listening experience, and protecting the speaker from overload damage. By connecting different resistance and capacitance values at the ACRC end, the sound quality and output power of the amplifier can be flexibly set; At the same time, the chip provides ACF Off mode.

The HT6818 output does not require a filtering network, and minimal external components save system space and cost, making it an ideal choice for portable applications.

In addition, the built-in turn off function of HT6818 minimizes standby current, and integrates functions such as mute function, independent turn off of left and right channels, overcurrent protection at the speaker output end, on-chip over temperature protection, and undervoltage abnormal protection; Adopting lead-free TSSOP-20 and SOP-16 packaging forms.

Product Features

• EDMA patented technology that reduces internal resistance and heat consumption greatly enhances

Output power and product reliability

Po=3.3 W (VDD=5.0V, RL=4 Ω, THD+N=10%)

Po=1.7 W (VDD=3.6V, RL=4 Ω, THD+N=10%)

• Excellent full bandwidth EMI suppression performance

a) Unique Active Edge Control Patent (AROC, Active) Edge Ringing and Overshot ControlCircuit

b) The radiation level is far below the FCC Part 15 Class B standard;

c) There is no interference with wireless communication sensitive modules in different frequency bands in the system,Such as FM, CMMB, GSM, CDMA, and Bluetooth;

d) Reduced radiation and conducted interference, reducing system design difficulty

• High fidelity, THD+N=0.15% (RL=4 Ω, PO=1W, f=1kHz)

• Full low noise applications with high signal-to-noise ratio

• Anti Clipping Function (ACF)

• Excellent Click Pop noise suppression performance

• Low shutdown current: ＜ 1 µ A

• Filter free digital modulation, directly driving the speaker

• Independent channel shutdown and mute function

• Abnormal protection functions for overcurrent, overheating, and undervoltage

• Lead free packaging, SOP-16, TSSOP-20

  Product Applications

• Portable speaker, USB speaker, FM plug-in speaker

  Specifications

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