General Description
The TC7136 and TC7136A are low power, 3-1/2 digit with liquid crystal display (LCD) drivers and analog-to-digital converters. These devices incorporate an "integrator output zero" phase, which enables over range recovery. The performance of existing TC7126, TC7126A and ICL7126 based systems may be upgraded with minor changes to external, passive components.

Features
• Fast Over Range Recovery, Ensured First Reading Accuracy
• Low Temperature Drift Internal Reference
   - TC7136: 70ppm/°C (Typ.)
   - TC7136A: 35ppm/°C (Typ.)
• 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: Voltage/Current/Ohms/Power, pH
• Digital Scales, Process Monitors
• Portable Instrumentation