Audio Decibel Level Meter


Posted on Feb 5, 2014

This is a circuit of Audio Decibel Level Meter. This circuit uses the SA604 which not only designed as an RF device but also the Received Signal Strength Indicator (RSSI). In a cellular radio, the radio`s microcomputer uses that function to monitor the received signal strength continuously. A logarithmic response proportional to the input signal l


Audio Decibel Level Meter
Click here to download the full size of the above Circuit.

evel is given by this circuit. The logarithmic response that can be provided by The SA604 is over an 80dB range up to a 15MHz operating frequency. Here is the circuit : To build a sensitive audio level indicator circuit, we can uses two integrated circuits: the SA532 and SA604. This circuit requires less than 5mA with a single 6V power supply. So it is ideal for portable equipment that use battery as power supply. This circuit has some advantages such as 10. 5mV sensitivity, low-power consumption belie the 80dB dynamic range, and has small size.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Zener tester
    Single Capacitor Powers Audio Mixer
    Dark Seeker - TV-to-Scope Converter
    3GPP FDD User Equipment Receiver Test
    Triple Power Supply
    Output by the CS3843 and CS5101 composed of 5V 3.3V switching DC power supply circuit



    Top