Class-D Speaker Amplifier for Digital Input with Built-in DSP - BM5449MWV
BM5449MWV is a Full Digital Speaker Amplifier withbuilt-in DSP (Digital Sound Processor) designed forFlat-panel TVs in particular for space-saving andlow-power consumption, delivers an output power of25W+25W. This IC employs state-of-the-art Bipolar,CMOS, and DMOS (BCD) process technology thateliminates turn-on resistance in the output power stageand internal loss due to line resistances up to anultimate level. With this technology, the IC can achievehigh efficiency of 90% (10W+10W output with 8 load).In addition, the IC is packaged in a compact reverseheat radiation type power package to achieve low powerconsumption and low heat generation and eliminatesnecessity of external heat-sink up to a total output powerof 40W. This product satisfies both needs for drasticdownsizing, low-profile structures and many function,high quality playback of sound system.
|* This product is a STANDARD grade product and not recommend for on-vehicle devices.|
|Maximum Output Gain[dB]||23.0|
|I/F||2 wire port|
|Digital Audio I/F||I2S / LJ / RJ|
|Additional Feature||P²Volume, P²Bass+, 8 Band EQ, 512 Tap FIR, 2 Band DRC, Surround, Fine Master Volume|
|Speaker Amp Outputs||2.0|
|Speaker Amp THD+N[%]||0.05|
|Speaker Amp PSRR[dB]||70.0|
|Speaker Amp Input Type||Digital Signal|
|Speaker Amp Type||Class D|
|Speaker Amp Output Power(Max.)[W]||25|
|Operating Temperature (Min.)[°C]||-25|
|Operating Temperature (Max.)[°C]||85|
- ・ With wide range of power supply voltage. (VCC=10 to 26V)
・ This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs. Synchronous SRC, Surround, 8 Band EQ, 1 Band EQ (for Sub), Volume, 2 Band DRC, Delay RAM for phase revised Close Over Filter, 512 Taps FIR Filter, P2Volume, P2Base+, Higher Sound Complement (High Generator), Soft Clipper, Hard Clipper
・ This IC has two inputs systems of digital audio interface. I2S / LJ / RJ format, LRCLK: 8 to 192 kHz, BCLK: 32fs / 48fs / 64fs, SDATA: 16 / 20 / 24bits BCLK: 32fs / 48fs / 64fs, SDATA: 16 / 20 / 24bits
・ Two Digital Audio Output for Audio DAC and headphone.
・ One PWM Output for Subwoofer.
・ The sound quality decrease by the power supply variation is prevented with the output feedback circuit. In addition, a low noise and a low distortion are achieved. Mass electrolytic capacitor is unnecessary because it is strong in the power supply variation.
・ It contributes to miniaturizing, making to the thin type, and the power saving of the system by highly effective (10W+10W output and 8 on-load) 90% and low generation of heat.
・ Low current at the Power down Mode.
・ The pop noise at power supply on/off is prevented, and a more high-quality soft mute function is built into. Highly reliable design with built-in various protection functions.
・ The component side product can be decreased because of small package (UQFN056V7070).
・ The maximum output in the stereo is 25W+25W (VCC=20.5V, 8 load).
・ The maximum output in the monaural(PBTL) is 50W(VCC=20.5V, 4 load)