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BA689 Datasheet

  • BA689

  • LED Display Driver

  • 87.27KB

  • 6頁

  • ETC

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Audio ICs
LED level meter driver, 12-point,
linear scale, dot or bar display
BA689
The BA689 is a monolithic IC for LED level meter applications. The display level range is 0mV
rms
to 300mV
rms
(typ.) di-
vided into 12 equally-spaced points with 25mV
rms
steps. The constant current outputs can be set using external resistors
to allow use of different color LEDs in various combinations.
FApplications
Signal meters, battery checkers,
and air conditioner temperature displays
FFeatures
1) 12-point level meter driver for bar / dot displays.
2) Fixed-current outputs that can directly drive LEDs.
3) Output current can be set using external resistors al-
lowing different types of LEDs to be used in combina-
tion.
4) Built-in half-wave rectifier amplifier.
5) LED on and off timing can be set using an external
capacitor and resistor.
6) With bar-type display, by connecting four LEDs in se-
ries, power dissipation is reduced.
FAbsolute
maximum ratings (Ta = 25_C)
656

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