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MAX1493 Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX1493 Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 25 page 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers 8 _______________________________________________________________________________________ Pin Description (continued) PIN MAX1491 MAX1493 MAX1495 NAME FUNCTION 21 18 SEG7 LCD Segment 7 Driver 22 19 SEG8 LCD Segment 8 Driver 23 20 SEG9 LCD Segment 9 Driver 24 21 SEG10 LCD Segment 10 Driver 25 25 BP3 LCD Backplane 3 Driver 26 26 BP2 LCD Backplane 2 Driver 27 27 BP1 LCD Backplane 1 Driver 28 29 VNEG -2.5V Charge-Pump Voltage Output. Connect a 0.1µF capacitor from VNEG to GND. — 22 SEG11 LCD Segment 11 Driver — 23 SEG12 LCD Segment 12 Driver — 24 SEG13 LCD Segment 13 Driver — 28 DPON Decimal Point Enable Input. Controls the decimal point of the LCD. See the Decimal Point Control section. Connect to DVDD to enable the decimal point. MAX1493 MAX1495 BINARY-TO-BCD CONVERTERS AND LCD DRIVERS ADC INPUT BUFFERS -2.5V AIN+ AIN- REF+ REF- +2.5V AVDD DVDD 2.048V BANDGAP REFERENCE OSCILLATOR/ CLOCK DPSET1 DPSET2 SEG1 SEG13 BP1 BP2 BP3 RANGE CONTROL +2.5V GND A = 1.22 TO CONTROL CHARGE PUMP -2.5V LOWBATT VNEG INTREF DPON HOLD PEAK Figure 1. MAX1493/MAX1495 Functional Diagram |
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