BA3308F/FV is a dual preamplifier with ALC (auto level control) developed by ROHM Co., Ltd., and is used for audio preamplifier applications such as stereo radios, cassette recorders, and tape recorders.
The BA3308F (and FV variant) is a dual preamplifier designed for stereo radio, cassette recorders and other audio applications. It features an on‑chip ALC rectifier, a power‑supply mute circuit to suppress pop noise on power‑on, and does not require an input coupling capacitor.
The device operates from 4.5 V to 14 V supply, draws low quiescent current, and provides a high voltage gain of 80 dB with low distortion (0.1 % THD) and low input noise (1 µV rms). It is offered in SOP14 and SSOP‑B14 packages and includes detailed application circuits for both recording and playback modes.
| Supply voltage range (Vcc) | 4.5 V ~ 14 V |
|---|---|
| Quiescent current (Iq) | 3.5 mA (typ) |
| Voltage gain (Gvo) | 80 dB |
| Total harmonic distortion (THD) | 0.1 % |
| Input noise (VNIN) | 1 µV rms |
| Package | SOP14, SSOP‑B14 |
| Absolute maximum supply voltage (Voc) | 16 V |
| Operating temperature (Topr) | -25 °C ~ +75 °C |
The BA3308F operates from 4.5 V to 14 V supply voltage.
Yes, it has an on‑chip power‑supply mute circuit that checks for pop noise at power‑on.
The device is offered in SOP14 and SSOP‑B14 packages.
Typical quiescent current is 3.5 mA.