BA3304F - Rohm

BA3304F 3V Dual Preamplifier

of circuit (see Fig. 1) As shown in the equivalent circuit for the BA3304 in Fig. 1, the first stage is a differential amplifier. This gives good stability with respect to temperature and supply voltage variation, and improves resistance to earth and power supply noise. The second stage uses Darlington pairs to increase the input impedance and the gain of th.

Features

1) Low noise (VNIN = 1.2µVrms). 2) Input coupling capacitors not required. 3) No input coupling capacitors means high bass stability. 4) Good channel balance. 5) Built-in bias circuit minimizes “pop” noise. 6) Emitter-follower output for low output impedance. 7) Good low voltage characteristics (operation possible from Typ. 1.2V). FBlock diagram 178 Audio ICs FAbsolute maximum ratings (Ta = 25_C) BA3304F FInternal circuit configuration FDescription of circuit (see Fig. 1) As shown in the equivalent circuit for the BA3304 in Fig. 1, the first stage is a differential amplifier. This gives.