BA6800AS Datasheet, PDF (1/7 Pages) Rohm – Fluorescent display tube level meter driver, 16-point x 2 channel, VU scale, bar display

Audio ICs
Fluorescent display tube level meter
driver, 16-point 2 channel, VU scale,
bar display
BA6800AS
The BA6800AS is a two-channel, 16-point fluorescent display tube driver for VU-scale bar-level meters. It uses a dynam-
ic-drive 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.
FApplications
Level meters for all types of AV equipment
FFeatures
1) Uses dynamic-drive system to display two 16-point
channels. 30-pin SDIP package.
2) AC and DC inputs provided. Switching function al-
lows 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 dissipa-
tion of the fluorescent display tube power supply.
6) Square root compression amplifier built in.
FAbsolute maximum ratings (Ta = 25_C)
797