BUY ICL7106CPLZ https://www.utsource.net/itm/p/421519.html
3 1/2 Digit, LCD/LED Display, A/D Converters
Description: 3 1/2 Digit A/D Converter Features: - Low power CMOS technology - Internal clock - Auto-zero and auto-polarity - Low cost - High accuracy - Low power consumption - Easy to use Applications: - Battery powered systems - Data acquisition systems - Portable instruments - Process control systems - Digital panel meters - Industrial automation systems (For reference only)