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Audio Accessory ICs

ROHM's high-performance accessory IC series for audio applications utilize advanced circuitry developed using cutting-edge audio technology, making them ideally suited for a wide variety of applications, such as car audio, boom boxes, mini stereos, and karaoke machines.



Pre-amplifiers with Built-in ALC

Broad Lineup Audio Accessory ICs

selection lineup  


OP Amp. with 3 Inputs Selector

Part No. Supply
voltage
（V）		 Circuit current
(mA)		 Open loop gain
(dB)		 Inputs CMRR
(dB)		 Supply voltage rejection ratio
(dB)		 Common- mode input voltage range
(V)
VCC=8V		 Offset voltage
(mV)		 Offset current
(nA)		 Input bias current
(nA)		 THD
(%)		 Channel separation
(dB)		 Gainband- width product
(MHz)		 Slew rate
(V/µS)		 Package RoHS
BA3131FS 6.0 to 16.0 4.9 110 3 72 90 6 0.5 5.0 50 0.0025 115 2.6 1.2 SSOP-A20 Yes


Ground Isolation Amplifier

Part No. Supply
Voltage
(V)		 Operating
Temperature
(℃)		 Circuits Circuit
Current
(mA)		 Voltage gain
(dB)		 CMRR
(dB)		 Common-mode input
Voltage Range(Vcc=8V)
(V)		 THD
(%)		 PACKAGE ROHS STOCK_CHECK
BA3121F 4.0TO18.0 -30TO85 2 9.0 -0.04 57 3.75 0.002 SOP8 Yes
BA3123F 4.0TO18.0 -40TO85 2 9.0 -0.04 57 3.75 0.002 SOP8 Yes


Band-pass Filters for Spectrum Analyzer Indication

Part No. Supply voltage
（V）		 Circuit current
（mA）		 Band Input mix amplifier REC level desplay Standard output
（V）		 Max. output
（V）		 B.P.F center frequency
(Hz)		 Package RoHS
BA3835F 4.5 to 6.5 8.5 5 Ö - 1.35 4.8 105,340,1k,3.4k,10.5k SOP18 Yes
BA3830F 4.5 to 8.0 3.8 6 Ö Ö 1.50 4.2 63,150,330,1k,3.3k,10k SOP18 Yes
BA3834F 4.5 to 6.5 10 7 Ö - 1.35 4.8 68,170,420,1k,2.4k,5.9k,14.4k SOP18 Yes


Pre-amplifiers with Built-in ALC

Part No. Supply voltage
（V）		 Open loop gain
(dB)		 THD(%) Input register
(kΩ)		 Max. output voltage
(Vrms)		 Equivalent Input noise voltage
(µVrms)		 ALC
range
(dB)		 Channel balance
(dB)		 Channel separation
(dB)		 PACKAGE ROHS STOCK_CHECK
BA3308F 4.5TO14 80 0.1 25 1.2 1.0 45 0 75 SOP14 Yes
BA3308FV 4.5TO14 80 0.1 25 1.2 1.0 45 0 75 SSOP-B14 Yes