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> TC7129 adc, 4.5 digit panel meter ic .005% accuracy (X2
TC7129 adc, 4.5 digit panel meter ic .005% accuracy (X2
4-1/2 digit Digital Panel Meter Chip
Display Analog-to-Digital Converter with On-Chip LCD Drivers
The traditional dual-slope method of A/D conversion has been enhanced with a successive integration technique to produce readings accurate to better than 0.005% of full scale, and resolution down to 10µV per count. The TC7129 includes features important to multimeter applications.It detects and indicates low-battery condition. A continuity output drives an annunciator on the display, and can be used with an external driver to sound an audible alarm.Overrange and underrange outputs and a range-change input provide the ability to create auto-ranging instruments.
Can also use LED displays by adding appropriate buffering on outputs
• Resolution on 200 mV Scale: 10 uV
• True Differential Input and Reference
• Low Power Consumption: 500 uA at 9V
• Direct LCD Driver for 4-1/2 Digits, Decimal Points, Low Battery Indicator, and Continuity Indicator
• Overrange and Underrange Outputs
• High Common Mode Rejection Ratio: 110 dB
• External Phase Compensation Not Required
US: $3.75 Canada: $4.50 International: $5.50 Lowest cost option.
2-nd item: S&H 75% less than first (or 25% of first)
items 3-5: S&H 80% less than first (or 20% of first)
items 6-10: S&H 90% less than first (or 10% of first)
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