BA6137 Datasheet (Rohm) - LED Level Meter Driver

BA6137, LED Level Meter Driver

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

BA6137 Features

* 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 power dissipation. 4) Built-in reference voltage means that power supply voltage fluctuations do n