Class-D Speaker Amplifier for Digital Input with Built-in DSP - BM5446EFV
BM5446EFV is a Class D Speaker Amplifier with built-in DSP (Digital Sound Processor) designed for Flat-panel TVs inparticular for space-saving and low-power consumption, delivers an output power of 20W+20W. This IC employsstate-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output powerstage and internal loss due to line resistances up to an ultimate level. With this technology, the IC can achieve highefficiency of 86% (10W+10W output with 8O load). In addition, the IC is packaged in a compact reverse heat radiation typepower package to achieve low power consumption and low heat generation and eliminates necessity of external heat-sinkup to a total output power of 40W. This product satisfies both needs for drastic downsizing, low-profile structures and manyfunction, high quality playback of sound system.
|* This product is a STANDARD grade product and not recommend for on-vehicle devices.|
|I/F||2 wire port|
|Digital Audio I/F||I2S / LJ / RJ|
|Additional Feature||P²Volume P²Bass P²Treble Volume 7 Band EQ 3 Band Tone Surround|
|Speaker Amp Outputs||2.0|
|Speaker Amp THD+N[%]||0.07|
|Speaker Amp Input Type||Digital Signal|
|Speaker Amp Type||Class D|
|Speaker Amp Output Power(Max.)[W]||20|
|Operating Temperature (Min.)[°C]||-25|
|Operating Temperature (Max.)[°C]||85|
- ・ This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs.
・ This IC has two input systems of digital audio interface. (I2S/LJ/RJ format, LRCLK: 32 kHz/ 44.1kHz / 48kHz, SYS_CLK: 256fs / 512fs, BCLK: 48fs / 64fs, SDATA: 16 / 20 / 24bit)
・ With wide range of power supply voltage, it is possible to operate with single power supply. (Vcc = 10~26V)
・ With high efficiency and low heat dissipation contributing to miniaturization, slim design, and also power saving of the system.
・ S/N of the system can be optimized by adjusting the gain selection in 16 steps. (20~35dB,1dB/step)
・ With built-in feedback circuitry at the output, prevents the decrease in sound quality due to change in power supply voltage. In addition, low noise and low distortion are achieved.
・ With a built-in DAC provides best stereo-output for headphone function. As a result, the selection of output of the digital input in two systems is possible.
8) It has additional S/PDIF output for the LINE output usage.
9) Eliminates pop-noise generated during the power supply on/off. High quality muting performance is realized by using the soft-muting technology.
10) This IC is built-in with various protection functions for highly reliability design. (High temperature protection, Under voltage protection, Output short protection, Output DC-Voltage protection and Clock stop protection).
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