BA6803S Просмотр технического описания (PDF) - ROHM Semiconductor

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BA6803S

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

ROHM Semiconductor 

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 dynamic-

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 typ.).

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)

811

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