Audio ICs LED level meter driver, 12 point, power scale, dot or bar display BA681A
The display level range is 6mVrms to 359mVrms (Typ.) divided into 12 points with repeated interval spacings of 3dB, 3dB and 4dB. The 0dB level is 180mVrms (Typ.) and the range is *30dB to +16dB.,