Document
ICs for Display Driver
AN6888
Dual 5-Dot LED Driver Circuit
s Overview
The AN6888 is an IC driving 5 × 2-ch LED and is capable of logarithmic bar graph display for input signal. Incorporating high gain rectification amp. enable to apply VU/Signal meter widely. Because the output is the constant current pull-in type, the constant current value can be variable by external resistance.
1 2 3 21.7±0.3 4 5 6 7 8 9 6.3±0.25 3.8±0.25 (3.45) 18 17 16 15 14 13 12 11 10 0.51min. 2.54
0.3 – 0.0
+ 0.1 5
Unit : mm 0.5±0.1 1.2±0.25 VCC 11 12 13 14 15
s Features • Wide range of operating voltage : VCC (opr.) = 5V ~ 16V • Power consumption can be reduced due to series connection of LEDs
• Wide range of constant current : 5mA ~ 25mA • Built-in high gain amp. : GV = 26dB typ.
3 ~15˚ 7.62±0.25
18-Lead DIP Package (DIP018-P-0300E)
s Block Diagram
–
C1 GND 1 9
+
R1 16
– – +
+ –
– +
+ –
– +
Vi
17
+
VREF Vi 2
+ – + – – + + – – + + –
10 RA C1
+ –
3
13
8
7
6
5
4
www.DataSheet4U.com
R1
.