ROHM BA6800AF Datasheet

Audio ICs

Fluorescent display tube level meter
driver, 16-point  2 channel, VU scale,
bar display

BA6800AF

The BA6800AF is a two-channel, 16-point fluorescent display tube driver for VU-scale bar-level meters.
It uses a dynamic-drive system and is provided with 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.

Applications
Level meters for all types of AV equipment

Features

1) Uses dynamic-drive system to display two 16-point
channels. 28-pin SOP 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).

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.

804

Audio ICs BA6800AF

FBlock diagram

FAbsolute maximum ratings (Ta = 25_C)

FElectrical characteristics (unless otherwise noted, Ta = 25_C)

805

Audio ICs BA6800AF

FElectrical characteristics (unless otherwise noted, Ta = 25_C)

806