TC7107A Datasheet Text
TC7106/A/TC7107/A
3-1/2 Digit Analog-to-Digital Converters
Features
:
- Internal Reference with Low Temperature Drift:
- TC7106/TC7107: 80 ppm/°C (Typical)
- TC7106A/TC7107A: 20 ppm/°C (Typical)
- Drives LCD (TC7106) or LED (TC7107) Display Directly
- Zero Reading with Zero Input
- Low Noise for Stable Display
- Auto-Zero Cycle Eliminates Need for Zero
Adjustment
- True Polarity Indication for Precision Null
Applications
- Convenient 9V Battery Operation (TC7106A)
- High-Impedance CMOS Differential Inputs: 1012Ω
- Differential Reference Inputs Simplify Ratiometric
Measurements
- Low-Power Operation: 10 mW
Applications:
- Thermometry
- Bridge Readouts: Strain Gauges, Load Cells, Null
Detectors
- Digital Meters: Voltage/Current/Ohms/Power, pH
- Digital Scales, Process Monitors
- Portable Instrumentation
General Description:
The TC7106A and TC7107A 3-1/2 digit direct display drive Analog-to-Digital Converters allow existing TC7106/TC7107 based systems to be upgraded. Each device has a precision reference with a 20 ppm/°C maximum temperature coefficient. This represents a 4 to 7 times improvement over similar 3-1/2 digit converters. Existing TC7106 and TC7107 based systems may be upgraded without changing external passive ponent values. The TC7107A drives mon anode light emitting diode (LED) displays directly with 8 mA per segment. A low cost, high resolution indicating meter requires only a display, four resistors, and four capacitors. The TC7106A low-power drain and 9V battery operation make it suitable for portable applications.
The TC7106A/TC7107A reduces linearity error to less than 1 count. Rollover error
- the difference in readings for equal magnitude, but opposite polarity input signals, is below ±1 count. High-impedance differential inputs offer 1 pA...
