ROHM BA6803S Datasheet
Audio ICs
Fluorescent display tube level meter
driver, 16-point 2 channel, VU scale,
bar display
BA6803S
The BA6803S is a two-channel, 16-point fluorescent display tube driver for VU-scale bar-level meters. It uses a dynamicdrive system and has both AC and DC inputs.
The AC input mode has a peak hold circuit. The IC features a power-on mute, and the output block can directly drive
fluorescent display tubes, so few external components are required.
The grid output duty cycle is 1 / 8.
Applications
Level meters for all types of AV equipment
Features
1) Uses dynamic-drive system to display two 16-point
channels. 30-pin SDIP package.
2) AC and DC inputs provided. Switching function allows two-mode display .
3) Upper 12 points have peak hold function in AC mode
(two seconds typ.).
4) Power-on mute function.
5) Dynamic-drive system reduces the power dissipation of the fluorescent display tube power supply.
6) Square root compression amplifier built in.
Absolute maximum ratings (Ta = 25C)
811
Audio ICs BA6803S
Block diagram
Electrical characteristics (unless otherwise noted, Ta = 25C)
812
Audio ICs BA6803S
813
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