Audio Accessory ICs Preamps with Built-in ALC BA3308F,BA3308FV No.11087ECT01 Description The BA3308F/FV is a dual preamplifier for recording and playback with ALC (auto level control), developed for stereo radio, cassette recorders, tape recorders, and other pre amplifiers audio applications. ALC circuit has a build in rectification circuit with wide adjustable dynamic range, high gain, low distortion amplifiers with direct coupling and mute circuit, used to cut off pop noise during power on. Available in SOP14, or SSOP-B14 Packages. Features 1) Built-in ALC rectification diode 2) Wide operating power supply voltage range (VCC=4.5~14 V) 3) Low current consumption (IQ=3.5mA) 4) High gain (GVO=80dB) 5) Low distortion (THD=0.1%) 6) Low noise (VNIN=1 Vrms) 7) Input coupling capacitor not needed 8) Good ALC channel balance 9) Built-in power supply mute circuit 10) Dynamic range of ALC can be changed by attaching input resistance. Applications Stereo radio, cassette tape recorders, stereo cassette decks, home stereos, music centers, etc. Line up matrix Part No. BA3308F BA3308FV Package SOP14 SSOP-B14 www.rohm.com 2012.06 - Rev.C 1/9 2011 ROHM Co., Ltd. All rights reserved. Technical Note BA3308F,BA3308FV Absolute maximum ratings(Ta=25) Parameter Symbol Limits Unit Supply voltage V 16 V CC *1 BA3308F 450 Power Pd mW *2 dissipation BA3308FV 350 Operating temperature Topr 2575 Storage temperature Tstg 55125 1 * Reduce by 4.5 mW/ C over 25 C, when mounted on a 70mm70mm1.6mm PCB board. 2 * Reduce by 3.5 mW/C over 25 C Operating conditions(Ta=25) Parameter Symbol Min. Typ. Max. Unit Supply voltage VCC 4.5 - 14 V Note: This IC is not designed to be radiation-resistant. Electrical characteristics(Unless otherwise noted, Ta=25, Vcc=7.0V, f=1kHz, BPF2020kHz) Test Parameter Symbol Min. Typ.Max.Unit Conditions Circuit Quiescent current I 1.5 3.5 4.5 mA V =0V Fig.17 Q IN rms Open loop voltage gain G 70 80 - dB V=-10dBV Fig.17 VO OUT Total harmonic distortion THD - 0.1 0.3 % NAB34dB, V =40mV Fig.17 OUT rms Input resistance R 15 25 45 k Fig.17 IN Maximum output voltage V 0.6 1.2 - V THD=1% Fig.17 OM rms Input conversion noise Rg=2.2k , referenced to NAB 34dB V - 1 2 V Fig.17 NIN rms voltage at 1kHz R =3.9 k, V -70 dBV standard, g IN ALC range ALC 40 45 - dB Fig.17 THD=3% ALC channel balance ALC - 0 2.5 dB V=-60dBV,-30dBV Fig.17 IN Channel separation CS 60 75 - dB V =0dBV, NAB 34dB Fig.17 O www.rohm.com 2012.06 - Rev.C 2/9 2011 ROHM Co., Ltd. All rights reserved.