TC835CPI

The input sensitivity of the TC835 analog-to-digital converter is determined by the differential inputs at Pin 10 (+INPUT) and Pin 9 (-INPUT). The input amplifier common-mode range extends from 0.5V below the positive supply to 1V above the negative supply. Within this common-mode voltage range, an 86 dB common-mode rejection ratio is typical. The TC835 integrates the differential voltage between the +INPUT and -INPUT pins, which must be within the device common-mode range, typically -1V from either supply rail. The input signal polarity is determined at the end of this phase. The TC835 operational theory incorporates a system zero phase and integrator output voltage zero phase to the normal two-phase dual-slope measurement cycle, resulting in reduced system errors and noise immunity. The dual-slope converter accuracy is not related to the integrating resistor and capacitor values, as long as they are stable during a measurement cycle, providing immunity to noise spikes and large conversion errors in high-noise environments. The input sensitivity of the TC835 analog-to-digital converter is optimized by these features. .

The TC835 semiconductor has various applications, including personal computer data acquisition, scales, panel meters, process controls, and HP-IL bus instrumentation.

The TC835 differs from the ICL7106 and TC7106 in terms of external diode-resistor roll-over error compensation circuits by utilizing an integrator output zero phase