Volume Volume Volume Mixing ATT Volume Mixing ATT Volume Mixing ATT Volume DatasheeDatasheett General-Purpose 6ch Electronic Volume with Built-in Advanced S witch BD3461FS General Description Key Specifications BD3461FS is a 6ch electronic volume which has the Power Supply Voltage Range: 7.0V to 9.5V best audio efficiency in the industry. It has an external Circuit Current (no signal): 25mA(Typ) sound mixing function (with volume) in the favorite Total Harmonic Distortion: 0.0004% (Typ) channel for mixing of portable audio and car Maximum Input Voltage: 2.35Vrms (Typ) navigations guide sound. Also, BD3461FS has a Cross-talk between Selectors: -105dB (Typ) volume switching shock sound prevention technique Volume Control Range: +23dB to -79dB called Advanced Switch, supporting the construction Output Noise Voltage: 1.9Vrms(Typ) of high quality car audio space by simple control. Residual Output Noise Voltage: 1.6Vrms (Typ) Operating Temperature Range: -40C to +85C Features Reduce switching noise of volume by using Package W(Typ) x D(Typ) x H(Max) Advanced Switch circuit. Mixing for external sound monaural 3ch. It is possible that is mixed to front/Rear/Sub output Lch/Rch independently. Built-in 3ch ATT for external sound mixing that can be controlled independently. Built-in buffered ground isolation amplifier inputs, ideal for external input. Energy-saving design resulting in low-current consumption by utilizing the Bi-CMOS process. It has the advantage in quality over scaling down the power heat control of internal regulators. SSOP-A24 Arranges all I/O terminals together for easier PCB 10.00mm x 7.80mm x 2.10mm layout and smaller PCB area. 2 I C BUS can be controlled by 3.3V / 5V. Applications It is optimal for car audio. It can also be used for car navigation, audio equipment of mini Compo, micro Compo, DVD, TV, etc. FIL GND SDA SCL CS VCC OUTF1 OUTF2 OUTR1 OUTR2 OUTS1 OUTS2 Typical Application Circuit 10 0.1 10 4.7 4.7 4.7 4.7 4.7 4.7 2.2K 22 21 20 19 18 17 16 15 14 13 24 23 VCC VCC/2 GND 2 I C BUS LOGIC 6ch Volume + 2+23dB3dB to -7-979dB B/ /11ddBB step,- Advanced switch circuit Mixing ATT Independent 0 d0dBB to -3-322dBdB / 8/8dBdB step, control - 3-32dB2dB to -6-464dBdB / 1/616ddB B step,- BUFFERED GND ISO AMP 100k 100k 100k 100k 100k 100k 100k 100k 100k 100k 100k Unit 1 2 3 4 5 6 7 8 9 10 11 12 R : 1 1 1 1 1 1 10 4.7 10 10 10 10 C : F INF1 INF2 INR1 INR2 INS1 INS2 EXT1 EXT2 EXT3 DIFFOUT NIN PIN Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0C2C0E100360-1-2 2015 ROHM Co., Ltd. All rights reserved. 1/28 TSZ2211114001 16.Dec.2015 Rev.001 BD3461FS Pin Configuration TOP VIEW INF1 1 24 FIL 23 GND INF2 2 INR1 3 22 SDA INR2 4 21 SCL 20 CS INS1 5 19 VCC INS2 6 18 OUTF1 EXT1 7 17 OUTF2 EXT2 8 EXT3 9 16 OUTR1 DIFOUT 10 15 OUTR2 14 OUTS1 NIN 11 13 OUTS2 PIN 12 Pin Descriptions Pin No. Pin Name Description Pin Name Description Pin No. 1 INF1 1ch Front input terminal 13 OUTS2 2ch Subwoofer output terminal 2 INF2 2ch Front input terminal 14 OUTS1 1ch Subwoofer output terminal 3 INR1 1ch Rear input terminal 15 OUTR2 2ch Rear output terminal 4 INR2 2ch Rear input terminal 16 OUTR1 1ch Rear output terminal 5 INS1 1ch Subwoofer input terminal 17 OUTF2 2ch Front output terminal 6 INS2 2ch Subwoofer input terminal 18 OUTF1 1ch Front output terminal 7 EXT1 1ch External input terminal 19 VCC Power supply terminal 8 EXT2 2ch External input terminal 20 CS Chip select terminal 2 9 EXT3 21 SCL I C Communication clock terminal 3ch External input terminal 2 10 DIFOUT DIFF amp output terminal 22 SDA I C Communication data terminal 11 NIN 23 GND DIFF amp negative input terminal GND terminal 12 PIN DIFF amp positive input terminal 24 FIL VCC/2 terminal www.rohm.com TSZ02201-0C2C0E100360-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/28 TSZ2211115001 16.Dec.2015 Rev.001