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BD37544FS データシート(PDF) 1 Page - Rohm |
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BD37544FS データシート(HTML) 1 Page - Rohm |
1 / 41 page 〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays . 1/37 TSZ02201-0C2C0E100590-1-2 © 2015 ROHM Co., Ltd. All rights reserved. 16.Dec.2015 Rev.001 TSZ22111 • 14 • 001 www.rohm.com Sound Processor with Built-in 3-band Equalizer BD37544FS General Description BD37544FS is a sound processor with built-in 3-band equalizer for car audio. The functions are stereo input selector (which can switch single and GND isolation), input-gain control, main volume, super bass, 5ch fader volume, LPF/HPF for subwoofer, and mixing input. Moreover, “Advanced switch circuit”, which is an original ROHM technology, can reduce various switching noise (ex. No-signal, low frequency like 20Hz & large signal inputs). Also, “Advanced switch” makes control of microcomputer easier, and can construct a high quality car audio system. Features Reduced switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, super bass, mixing by using advanced switch circuit. Built-in differential input selector that can make various combination of single-ended / differential input. Built-in ground isolation amplifier inputs, which is ideal for external stereo input. Built-in input gain controller reduces switching noise for volume of a portable audio input. Decreased number of external components due to built-in 3-band equalizer filter, LPF for subwoofer, and HPF. It is possible to control Q, GV, fO of 3-band equalizer and fC of LPF/HPF through I2C BUS control. It is possible to adjust the gain of the bass, middle, and treble up to ±20dB with 1 dB step gain adjustment. It is equipped with output terminals for Subwoofer. Moreover, the stereo signal output of the front and rear can also be chosen by the I2C BUS control. Built-in mixing input and mixing attenuator. Energy-saving design resulting in low-current consumption is achieved by utilizing the Bi-CMOS process. It has the advantage in quality over scaling down the power heat control of the internal regulators. Input terminals and output terminals are organized and separately laid out to keep the signal flow in one direction which results in simpler and smaller PCB layout. It is possible to control the I2C BUS by 3.3V / 5V. Key Specifications Power Supply Voltage Range: 7.0V to 9.5V Circuit Current (No Signal): 38mA (Typ) Total Harmonic Distortion: THD+N1 0.001% (Typ) THD+N2 0.002% (Typ) Maximum Input Voltage: 2.3Vrms(Typ) Cross-talk Between Selectors: -100dB(Typ) Volume Control Range: +15 dB to -79dB Output Noise Voltage: VNO1 3.8µVrms(Typ) VNO2 4.8µVrms(Typ) Residual Output Noise Voltage: 1.8µVrms(Typ) Operating Temperature Range: -40°C to +85°C Package W(Typ) x D(Typ) x H(Max) . Applications It is optimal for car audio systems. It can also be used for audio equipment of mini Compo, micro Compo, TV, etc. . SSOP-A32 13.60 mm x 7.80mm x 2.01mm Datasheet Datasheet |
同様の部品番号 - BD37544FS_15 |
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同様の説明 - BD37544FS_15 |
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