BA6154 データシートの表示（PDF） - ROHM Semiconductor

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BA6154

LED level meter driver, 5-point, VU scale

ROHM Semiconductor 

Audio ICs

LED level meter driver, 5-point,

VU scale

BA6154

The BA6154 is a driver IC for LED VU level meters in stereo equipment and other display applications.

The IC displays the input level (range: *10dB to ) 6dB) on a 5-point, bar-type LED display.

The BA6137 includes a rectifier amplifier allowing direct AC input, and has constant-current outputs, so it can directly

drive the LEDs without variations in LED current due to supply voltage fluctuations.

FApplications

VU meters, signal meters, and other display devices.

FFeatures

1) Rectifier amplifier allows either AC or DC input.

2) Rectifier amplifier has high gain (26dB), so operation

at low input level is possible.

3) Constant-current outputs for constant LED current

when the power supply voltage fluctuates.

4) Built-in reference voltage means that power supply

voltage fluctuations do not effect the display.

5) Wide operating power supply voltage range (3.5V to

16V) for a wide range of applications.

6) Low PCB space requirements. Comes in a compact

9-pin SIP package and requires few external compo-

nents.

FAbsolute maximum ratings (Ta = 25_C)

637

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