Functions
• Display
    Nine red or green LEDs display the input level in the shape of a bar.
• Input amplifier
    Wide application is available owing to built-in DC amplifier
    whose gain is variable with external resistors.
• Comparator level
    Setting is made by steps of 3 dB as follows.
    –18 dB, –15 dB, –12 dB, –9 dB, –6 dB, –3 dB, 0 dB, +3 dB, +6 dB
• Supply voltage
    The recommended supply voltage range is so wide as 5.5 V to 16 V. (If pin Vref 2 is used, 7 V to 16 V.)
• Reference voltage
    Constant voltage output is available with external transistor owing to pin Vref 2 = 5 V.

Applications
• AC level meters such as VU meters.
• DC level meters such as signal meters.