Datasheet Analog Sound Processor series Sound Processor with Built-in Surround Sound Function BD3491FS General Description Key Specification Built in stereo 6 input selectors and volume that there is Current upon no signal: 7mA(typ) not an impedance change of a volume terminal. And this Total Harmonic Distortion: 0.002%(typ) is sound processor can realize 2-band equalizer Maximum Input Voltage: 2.4Vrms(typ) Crosstalk between Selectors: 100dB(typ) (Bass/Treble, Gain14dB / 2dB step) and BassBoost, Volume Control Range: 0dB to -87dB Output gain, Surround by external components. Output Noise Voltage: 5Vrms(typ) Residual Output Noise Voltage: 5Vrms(typ) Features Operating Temperature Range: -40 to +85 Equipped with 6 single ended stereo input selectors Package W(typ) x D(typ) x H(max) Built-in input gain controller suitable for mobile audio. SSOP-A32 13.60mm x 7.80mm x 2.01mm Volume input terminal can be used as a microphone input terminal since its impedance remains constant even if volume setting is changed. Bi-CMOS process is suitable for the design of low current and low energy. It also provides more quality for Bi-CMOS small scale regulator and heat in a set. The package of this IC is SSOP-A32. Sound input terminals and output terminals arrangement is optimized for easy and fast layout of PCB pattern. At the same time, it minimizes PCB area. Applications Suitable for mini-components or micro components. Used for audio equipment of TV, DVD, etc. SSOP-A32 Typical Application Circuit Figure 1. Application Circuit Diagram Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays .w ww.rohm.com TSZ02201-0C2C0E155560-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/30 1.APR.2014 Rev.004 TSZ2211114001 Datasheet BD3491FS Pin Configuration B1 1 32 A1 B2 2 31 A2 C1 3 30 FIL C2 4 29 GND 28 SDA D1 5 D2 6 27 SCL E1 7 26 VCC E2 8 25 OUT1 24 SB1 F1 9 F2 10 23 SR SEL2 11 22 SB2 SEL1 12 21 OUT2 VOL1 13 20 BCB1 VOL2 14 19 BCA1 TC2 15 18 BCA2 TC1 16 17 BCB2 Figure 2. Pin Configuration Pin Descriptions Terminal Terminal Terminal Terminal Description Description Number Name Number Name 1 B1 Ch1 of B input terminal 17 BCB2 Ch2 of Bass filter terminal 2 B2 Ch2 of B input terminal 18 BCA2 Ch2 of Bass filter terminal 3 C1 Ch1 of C input terminal 19 BCA1 Ch1 of Bass filter terminal 4 C2 Ch2 of C input terminal 20 BCB1 Ch1 of Bass filter terminal 5 D1 Ch1 of D input terminal 21 OUT2 Ch2 of Output terminal 6 D2 Ch2 of D input terminal 22 SB2 Ch2 of Bass boost terminal 7 E1 Ch1 of E input terminal 23 SR Surround terminal 8 E2 Ch2 of E input terminal 24 SB1 Ch1 of Bass boost terminal 9 F1 Ch1 of F input terminal 25 OUT1 Ch1 of Output terminal 10 F2 Ch2 of F input terminal 26 VCC Power supply terminal 11 SEL2 Ch2 of selector output terminal 27 SCL Serial communication clock terminal 12 SEL1 Ch1 of selector output terminal 28 SDA Serial communication data terminal 13 VOL1 Ch1 of Volume input terminal 29 GND GND terminal 14 VOL2 Ch2 of Volume input terminal 30 FIL VCC/2 terminal 15 TC2 Ch2 of Treble filter terminal 31 A2 Ch2 of A input terminal 16 TC1 Ch1 of Treble filter terminal 32 A1 Ch1 of A input terminal www.rohm.com TSZ02201-0C2C0E155560-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/30 1.APR.2014 Rev.004 TSZ2211115001