TC7126

TC7126/A 3-1/2 Digit Analog-to-Digital Converters Features: Internal Reference with Low Temperature Drift: - TC7126: 80ppm/°C, Typical - TC7126A: 35ppm/°C, Typical Zero Reading with Zero Input Low Noise: 15VP-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: 500W Typ., 900W 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 Device Selection Table Package Code Package Temperature Range CPL IPL CKW CLW 40-Pin PDIP 40-Pin PDIP (TC7126 Only) 44-Pin PQFP 44-Pin PLCC 0C to +70C -25C to +85C 0C to +70C 0C to +70C 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 measurement 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. The TC7126A reduces linearity ...