Datasheet Middle Power Class-D Speaker Amplifier series 17W+17W Full Digital Speaker Amplifier with built-in DSP BM28723AMUV General Description Features BM28723AMUV is a 17W+17W Class D stereo Speaker Built-in DSP (Digital Sound Processor) for Audio Amplifier with built-in DSP designed for TVs specifically Signal Processing for TVs for space-saving and low-power consumption. 12-Band/ch BQ, 3-Band DRC, Pre-Scaler, Channel BM28723AMUV features BCD (Bipolar, CMOS, DMOS) Mixer, Fine Master Volume, Hard Clipper, Level process technology to achieve high efficiency. In addition, Meter, etc. BM28723AMUV is packaged in a compact back surface Single Input System for Digital Audio Interface (No heatsink type power package to attain low power Master Clock Required) 2 consumption, low heat generation without external - I S/LJ/RJ Format heatsink. The package Max output power is only - LRCLK: 32kHz/44.1kHz/48kHz 17W+17W (When R =8) as compared to 20W+20W - BCLK: 32fs/48fs/64fs L (When R =8) Max output power of package with - SDATA: 16bit/20bit/24bit L external heat-sink. Single Output System for Digital Audio Interface 2 The product satisfies all needs for drastic downsizing, - I S Format low-profile structures and powerful high quality playback - SDATA: 16bit/20bit/24bit of sound systems. No Snubber Circuit Required (V , V 22V) CCP1 CCP2 because of Slew Rate Control Output Feedback Circuit which prevents decrease of Key Specifications sound quality caused by change of power supply Supply voltage range 10V to 24V voltage, achieves low noise and low distortion, so no (V , V ) CCP1 CCP2 large electrolytic-capacitors for V bypass is CC Speaker output power 17W+17W (Typ) required. (V , V =18V, R =8) CCP1 CCP2 L Wide Range of Power Supply Input Voltage THD+N 0.08 % (Typ) The monaural output reduces the number of external parts needed. Applications High Efficiency and Low Heat Dissipation allowing TVs (LCD, OLED) Miniaturization, Slim Design, and also Power Saving Home Audio of the System Desktop PC Eliminates pop-noise generated during the power Amusement Equipment supply ON/OFF. High quality muting performance is Electronic Music Equipment, etc. achieved using the soft-muting technology. Built-in with Various Protection Functions for Highly Typical Application Circuit Reliability Design - High Temperature Protection SP ch1 SP ch2 (Lch) (Rch) - Under Voltage Protection - Output Short Protection - DC Voltage Protection for speaker - Clock Stop Protection Small Package, it reduces surface mount area Package W(Typ) x D(Typ) x H(Max) VQFN032V5050 5.00mm x 5.00mm x 1.00mm Digital Audio -con Source Figure 1. Typical Application Circuit VQFN032V5050 Product structure: Silicon integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0C1C0E900720-1-2 2018 ROHM Co., Ltd. All rights reserved. 1/79 TSZ22111 14 001 31.Aug.2018 Rev.001 RSTX MUTE BSP1P OUT1P SCL SDA ERRORX OUT1N BSP1N SDATAO SDATA BSP2P LRCLK OUT2P BCLK OUT2N BSP2NERRORX RSTX MUTEX SCL SDA BM28723AMUV Pin Configuration and Block Diagram 32 31 30 29 28 27 26 25 BSP1P OUT1P NC REG G REG G Control 1 2 wire I/F 24 ADDR VCCP1 I/F Driver FET 1P 2 23 BCLK GNDP1 2 I S/LJ/RJ Driver 3 22 LRCLK BSP1N I/F FET 1N 4 21 8 Times SDATA OUT1N PWM Over- Audio Modulator Sampling DSP 5 TEST1 Digital 20 OUT2P Filter Driver 6 PLL 19 FET 2P BSP2P PLL 7 REG15 18 REG15 Driver GNDP2 FET 2N 8 Protection 17 VCCP2 DGND DVDD TEST2 TEST3 SDATAO BSP2N OUT2N NC 9 10 11 12 13 14 15 16 Figure 2. Pin Configurations and Block Diagram (Top View) Pin Description No. Name I/O No. Name I/O No. Name I/O No. Name I/O 1 ADDR I 9 TEST2 I 17 VCCP2 - 25 OUT1P O 2 BCLK I 10 DVDD - 18 GNDP2 - 26 BSP1P I 3 LRCLK I 11 TEST3 I 19 BSP2P I 27 REG G O 4 SDATA I 12 SDATAO O 20 OUT2P O 28 NC - 5 TEST1 I 13 ERRORX O 21 OUT1N O 29 RSTX I 6 PLL I/O 14 NC - 22 BSP1N I 30 MUTEX I 7 REG15 O 15 BSP2N I 23 GNDP1 - 31 SCL I 8 DGND - 16 OUT2N O 24 VCCP1 - 32 SDA I/O I: input, O: output, -: others www.rohm.com TSZ02201-0C1C0E900720-1-2 2018 ROHM Co., Ltd. All rights reserved. 2/79 TSZ22111 15 001 31.Aug.2018 Rev.001