TC818A

TC818A Auto-Ranging Analog-to-Digital Converter with 3-1/2 Digit Display Features Auto-Ranging Analog-to-Digital Converter with 3-1/2 Digit Display Annunciator Outputs Permit Customizing of LCD Auto-Range Operation for AC and DC Voltage and Resistance Measurements Two User Selected AC/DC Current Ranges: 20mA and 200mA 22 Operating Ranges: 9 DC/AC Voltage 4 AC/DC Current 9 Resistance and Low Power Ohms Display Hold Function 3-1/2 Digit Resolution in Auto-Range Mode: 1/2000 Extended Resolution in Manual Range Mode: 1/3000 Internal AC-to-DC Conversion Op Amp Triplex LCD Drive for Decimal Points, Digits, Bar Graphs, and Annunciators Continuity Detection and Piezoelectric Transducer Driver Low Drift Internal Reference: 75ppm/°C 9V Battery Operation: 10mW Low Battery Detection and LCD Annunciator General Description The TC818A is an integrating analog-to-digital converter (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) measurements. 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. T...