TC7126 Datasheet PDF - Microchip

General Description:

●The TC7126A is a 3-1/2 digit CMOS Analog-to-Digital Converter (ADC) containing all the active components necessary to construct a 0.05% resolution measure ment system. Seven-segment decoders, digit and polarity drivers, voltage reference, and clock circuit are integrated on-chip. The TC7126A directly drives a Liquid Crystal Display (LCD), and includes a backplane driver.

●A low-cost, high resolution indicating meter requires only a display, four resistors, and four capacitors. The TC7126A’s extremely low-power drain and 9V battery operation make it ideal for portable applications.

●Features:

●• Internal Reference with Low Temperature Drift:

●  - TC7126: 80ppm/°C, Typical

●  - TC7126A: 35ppm/°C, Typical

●• Zero Reading with Zero Input

●• Low Noise: 15μVP-P

●• High Resolution: 0.05%

●• Low Input Leakage Current: 1pA Typ., 10pA Max.

●• Precision Null Detectors with True Polarity at Zero

●• High-Impedance Differential Input

●• Convenient 9V Battery Operation with Low-Power

●  Dissipation: 500μW Typ., 900μW Max.

●Applications:

●• Thermometry

●• Bridge Readouts: Strain Gauges, Load Cells, Null Detectors

●• Digital Meters and Panel Meters:

●  - Voltage/Current/Ohms/Power, pH

●• Digital Scales, Process Monitors