BA3830S Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BA3830S

Band-pass filter for spectral analyzers

ROHM Semiconductor 

Audio ICs

FCircuit operation

(1) LINE and REC input circuits

The LINE and REC input circuits are configured as differ-

ential amplifiers, and the gain can be set to any desired

value using an external resistor. The input impedance is

determined by the external resistor.

BA3830S

(2) Bias circuit

A bias voltage of VCC / 2 is applied to each of the circuits.

Since the output stage uses a push-pull configuration, a

stable bias source can be obtained.

(3) BPF circuit

This is a circuit that selects the required frequency com-

ponent from the input signal and amplifies it. With this

configuration, no external capacitor is needed. In addi-

tion, the center frequency is set based on the current, so

f01 and f02 to f06 can be set individually, using separate ex-

ternal resistors (pins1 and 2).

Q is set to 4.5V (Typ.).

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