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TC818A

Status: End of Life

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
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Device Overview

Summary

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,20 mA and 200 mA, 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 indicated by a flashing 1 MSD 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 features include a memory mode, low-battery detection, display HOLD input, and continuity buzzer driver. The 3-1/2 digit numeric display includes a full set of annunciators. Decimal points are adjusted as automatic or manual range changes occur,and voltage, current, and ohms operating modes are displayed. Additional annunciators are activated for manual, auto, memory, HOLD, AC, low-power ohms, and low-battery conditions. The TC818A is available in a surface-mounted 64-pin flat package.Combining a numeric display driver,single 9V battery operation,internal range switching,and compact surface mounting,the TC818A is ideal for advanced portable instruments.

Please consider this device TC7116A , TC7126A

Additional 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
Parametrics
Name
Value
Supply Voltage (V)
9
Power (mW)
13.5
Hold Function
Yes
Resolution (Digits)
3.5
Resolution (Counts)
2000
Display Type
LCD

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Data Sheet

11/08/2005
528KB

Product Line Card


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