LA3161 based Preamplifier schemati circuit diagram with some explanation

The amplifier is used for low-level signals, such as a microphone, tape passes before they step input amplifier. Steps are generally less sensitive. The answer can also be useful frequency clip, organize and pre-amplifier. LA3161 is widely used in tape recorders and stereo preamp amplifier.
Block diagram shown. LA3161 consists of two low-noise preamplifier chip stereo applications catering to ripple rejection well. Low number of external components and singlet (East)) (Figure 43) package, easy to install. Wltile operating voltage of 9V, IC can withstand voltage of 18V. Wok typical input resistance and output resistance 10K of78dB the open-loop gain. Following block diagram of an integrated circuit. The input pins 1 and 8, issue 3 and 6 needles, pins 2 and 7 negative feedback. The 5-pin and 4-pin power ground connection. The internal voltage regulator.
Turnkey PCB can, or by filling out the PCB to be very useful in the IC. You can still be Veroboard back on the ground, if proper care is taken. It simply means that people are connected to the ground terminal of the output and input at the same place. This can cause severe vibration and normal enthusiasts are left in the forest. Read a general description of the amplifier at the end.