Häufig gestellte Fragen (FAQ) |ROHM Semiconductor

Kann die Einschwingzeit/Wiederherstellungszeit frei eingestellt werden?
- Sie kann eingestellt werden.
  Die Zeitkonstante des ALC kann anhand von zwei externen Teilen frei eingestellt werden.

Ist der Eingangskoppelkondensator unnötig?
- Er ist unnötig.
  Es ist unnötig, einen Kondensator zum Zuschalten der Eingangsklemme durch die Anwendung der Koppelmethode zu integrieren.

For Analog Audio Processors,
What kind of lineup is available?
- The chart below shows the available products and is divided according to functions and features such as EQ (2-band, 3-band, no EQ), Power Supply (1 Positive Power Supply, 2 Positive Power Supplies, Positive and Negative Power Supplies), Surround, and Advanced Switches.

For Analog Audio Processors,
How should unused input signal pins be handled in a product that operates with One or Two Positive Power Supplies?
- Since the voltage at the input terminal is a Bias Voltage, it is recommended to connect it to GND via a Coupling Capacitor.
  It is also possible to leave OPEN the unused input signal pins, but External Noise, Crosstalk, etc. are more likely to occur.

For Analog Audio Processors,
For a product that operates with One or Two Positive Power Supplies, is accurate capacitance value required for the Coupling Capacitor of unused input signal terminals?
- Accurate capacitance value is not required, but since the HPF is formed by the Coupling Capacitor and the internal input Resistor, the noise frequency bandwidth that can be filtered varies depending on the capacitance value to be connected.

For Analog Audio Processors,
What are the benefits of using ground-isolated inputs?
- The ground isolation input is effective in removing Common Mode Noise superimposed on both the signal input and GND. For example, it is effective when the same noise is on the GND side and the signal side, such as when a signal from an external device is input via RCA cables.

For BD37033FV-M,BD37034FV-M,BD37524FS,BD37534FV,BD37543FS,
What is the level meter function?
- The Level Meter is a circuit that outputs a DC voltage proportional to the magnitude of the signal and holds the peak level of the detected signal. Since the held peak level can be reset by resetting the Level Meter, the transition of the peak level can be monitored by periodically performing a reset.
  The reset interval should be at least one cycle of the frequency to be monitored.