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PDF BA6137 Data sheet ( Hoja de datos )

Número de pieza BA6137
Descripción LED Level Meter Driver / 5 Point VU Scale
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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No Preview Available ! BA6137 Hoja de datos, Descripción, Manual

Audio ICs
LED level meter driver, 5-point,
VU scale
BA6137
The BA6137 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 power supply voltage fluctuations.
FApplications
VU meters, signal meters, and other display devices.
FFeatures
1) Rectifier amplifier allows either AC or DC input.
2) Constant-current outputs for constant LED current
when the power supply voltage fluctuates.
3) Current output is optimized for red LEDs, for low pow-
er dissipation.
FAbsolute maximum ratings (Ta = 25_C)
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 attached compo-
nents.
FBlock diagram
738

1 page





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