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CA3162 Datasheet(PDF) 6 Page - Intersil Corporation |
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CA3162 Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 7 page 6 CA3162E Common-Cathode, LED Display Application Figure 4 shows the CA3162E connected to a CD4511B decode/driver to operate a common-cathode LED display. Unlike the CA3161E, the CD4511B remains blank for all BCD codes greater than nine. After 999mV the display blanks rather than displaying EEE, as with the CA3161E. When displaying negative voltage, the first digit remains blank, instead of (-), and during a negative or positive over- range the display blanks. The additional logic shown within the dotted area of Figure 4 restores the negative sign (-), allowing the display of negative numbers as low as -99mV. Negative overrange is indicated by a negative sign (-) in the MSD position. The rest of the display is blanked. During a positive overrange, only segment b of the MSD is displayed. One inverter from the CD4049B is used to operate the decimal points. By connect- ing the inverter input to either the MSD or NSD line either DP1 or DP2 will be displayed. FIGURE 4. TYPICAL COMMON-CATHODE LED APPLICATION 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 1/ 3 CD4049UB 1/ 3 CD4049UB V+ 1.8k Ω 1.8k Ω 1.8k Ω 1.8k Ω 1.8k Ω 1.2k Ω 1.2k Ω 12 11 10 9 8 7 6 5 4 3 2 1 DP1 DP2 fa g b c3 c1 ed c2 cdP g f V+ e a b c d B C LT BL LE/STROBE A D GND 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 V+ C D ZERO GAIN INT HIGH LOW B A NSD MSD LSD GND HOLD ZERO V+ 0.27 µF 10k Ω GAIN INPUT V+ 100k Ω 100k Ω 100k Ω 100k Ω 50k Ω V+ 100 k Ω 100 k Ω 100 k Ω V+ 1/ 6 CD4049UB 1/ 6 CD4049UB CD4012B 22k Ω V+ 100k Ω DP1 DP2 6 BUFFERS (1 CD4050B) CD4511B CA3162E HP5082-7433 OR EQUIVALENT CA3162 |
Número de pieza similar - CA3162 |
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Descripción similar - CA3162 |
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