BA682A Rohm, BA682A Datasheet

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BA682A

Manufacturer Part Number
BA682A
Description
LED level meter driver, 12-point, VU scale, dot or bar display
Manufacturer
Rohm
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
BA682A
Manufacturer:
NS
Quantity:
6 223
Part Number:
BA682AF-E2
Manufacturer:
ROHM
Quantity:
1 000
The BA682A is a monolithic IC for LED level meter applications.
The display level range is 13mV
+8dB.
The constant current outputs can be set using external components allowing use of different color LEDs in various com-
binations.
FApplications
Level meters for all types of audio equipment applications
FFeatures
1) 12-point VU display 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-
FAbsolute maximum ratings (Ta = 25_C)
640
LED level meter driver, 12–point,
VU scale, dot or bar display
BA682A
Audio ICs
lowing different types of LEDs to be used in combina-
tion.
rms
to 327mV
rms
(Typ.), the 0dB level is 130mV
4) Built-in half-wave rectifier amplifier.
5) LED on and off timing can be set using an external
6) With bar-type display, by connecting four LEDs in se-
capacitor and resistor.
ries, power dissipation is reduced.
rms
(Typ.) and the VU display is -20dB to

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BA682A Summary of contents

Page 1

... Audio ICs LED level meter driver, 12–point, VU scale, dot or bar display BA682A The BA682A is a monolithic IC for LED level meter applications. The display level range is 13mV to 327mV rms +8dB. The constant current outputs can be set using external components allowing use of different color LEDs in various com- binations ...

Page 2

... Audio ICs FBlock diagram FElectrical characteristics (unless otherwise noted 25_C and V = 12V) CC BA682A 641 ...

Page 3

... Audio ICs FMeasurement circuit FComparator level vs. AC and DC input levels FApplication example 642 Fig.2 BA682A ...

Page 4

... Comparator voltage In the case of the BA682A, the comparator voltage is the input voltage when about half LED current setting value (typ.) is flowing in an LED. Therefore, if the LED current is set to 16mA, the comparator voltage is the value when 8mA is flowing in the LED. ...

Page 5

... Audio ICs FTape deck application example FExternal dimensions (Units: mm) 644 BA682A ...

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