Auto-ranging Analog-to-digital Converter With 3-1/2 Digit Display Technology

The TC818A is an integrating Analog-to-digital con- verter (ADC) with a 3-1/2 digit numeric LCD Driver Automatic ranging, and single 9V battery operation. The numeric Display provides 0.05% resolution and a full set of annunciators that spell out the TC818A 's many operating modes. Automatic range selection is provided for both voltage (DC and AC) and ohms (high and low power) measure- ments. Expensive and bulky mechanical range switches are not required. Five full scale ranges are available, with Automatic selection of external volt/ohm Attenuators over a 1 to 10,000 range. Two current ranges, 20mA and 200mA, CAN be manually selected. The auto-range feature CAN be bypassed, allowing input Attenuator selection through a single line input. During Manual mode operation, resolution is extended to 3000 counts full scale. Extended resolution is also available during 2000k and 2000V full scale auto- range operation. The extended range operation is indi- cated by a flashing 1MSD and by the fully extended bar graph. The TC818A includes an AC-to-DC converter for AC voltage and current measurements. Only external Diodes resistors/capacitors are required. Other fea- tures include a Memory mode, low battery detection, Display HOLD input, and continuity buzzer driver. By Microchip Technology Inc.
Part Manufacturer Description Datasheet Samples
TC818ACBU Microchip Technology Inc 1-CH DUAL-SLOPE ADC, PQFP64, PLASTIC, QFP-64
TC818ACBUTR Microchip Technology Inc 1-CH DUAL-SLOPE ADC, PQFP64, PLASTIC, QFP-64
TC818A 's PackagesTC818A 's pdf datasheet
TC818ACBU PQFP




TC818A Pinout, Pinouts
TC818A pinout,Pin out
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