smuscat said:I am attempting to understand the 200mV configuration of th icl7107 (fig 1) in the datsheet attached. My question is the analogue ground shorted internally with the power of chip? or is it floating with respect to the supply? Thanks
The ICL7107 is a high-performance, low-cost analog-to-digital converter (ADC) with a built-in 3.5 digit display. Its main purpose is to convert analog signals into digital signals that can be easily read and displayed on the integrated display.
The ICL7107 uses a dual-slope integration technique to convert analog signals into digital signals. It first integrates the analog input signal for a fixed amount of time, and then discharges the capacitor to a reference voltage for a fixed amount of time. The resulting voltage is then compared to a known reference voltage and converted into a digital value.
The ICL7107 offers several advantages, including high accuracy, low cost, and ease of use. It also has a built-in display, eliminating the need for external display components. Additionally, it has a low power consumption and can operate over a wide temperature range.
The ICL7107 has a typical accuracy of ±1 count, which is equivalent to 0.1% of the full-scale reading. This can be further improved by calibrating the device and using high-quality external components.
Yes, the ICL7107 can be configured for different input voltage ranges by using external resistors to set the desired full-scale reading. It also has an auto-zero function that allows for better accuracy when measuring small signals.