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2.3" seven segment display

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binojkumar

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Hi friends i'm using a 2.3" seven segment display(3nos), which is best driver IC or circuit i should go through??
Please suggest a best driver circuit.

Thanks
Binojkumar
 

engshahrul

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How many 7 segment you want use and did you test the current for single 7 segment?
I will use ULN2803 for that. 8 seven segment
 

kak111

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I dont know what is the best and what are your needs exactly ,
but look these................

The MAX7219/MAX7221 are compact, serial input/output
common-cathode display drivers that interface
microprocessors (μPs) to 7-segment numeric LED displays
of up to 8 digits, bar-graph displays, or 64 individual
LEDs. Included on-chip are a BCD code-B
decoder, multiplex scan circuitry, segment and digit
drivers, and an 8x8 static RAM that stores each digit.
Only one external resistor is required to set the segment
current for all LEDs. The MAX7221 is compatible
with SPI™, QSPI™, and MICROWIRE™, and has slewrate-
limited segment drivers to reduce EMI.

https://datasheets.maxim-ic.com/en/ds/MAX7219-MAX7221.pdf

The AS1100 is an LED driver for 7 segment numeric displays of up to 8 digits.
The AS1100 can be programmed via a conventional 4-wire serial interface.
It includes a BCD code-B decoder, a multiplex scan circuitry, segment and
display drivers and a 64-Bit memory................................

https://www.austriamicrosystems.com/eng/content/download/1191/6932/514
 

BradtheRad

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I haven't used LED segments that large. The 4543 is probably fragile to power that.

Maybe the 4511 can handle it. You only need one as long as you have an upstream driver IC strobing 3 digits in rotation one digit at a time.

If you're counting events, I've had good results with the 14553 3-digit BCD counter. It strobes 3 digits in rotation. Very handy especially if your 3 digits share the same 7 terminals for the segments.
 

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