BUY ICL7107SCPL https://www.utsource.net/itm/p/454872.html
3 1/_2 Digit, Lcd/led Display, A/D Converters
Description: 3-1/2 Digit A/D Converter Features: Low Cost Low Power High Accuracy Wide Operating Range Internal Reference Internal Clock Auto-Zero and Auto-Polarity TTL/CMOS Compatible On-Chip Clock Low Drift Low Noise Low Offset Applications: Digital Panel Meters Process Control Battery Monitors Data Acquisition Systems Medical Instrumentation Industrial Automation Automotive Instrumentation Portable Instrumentation (For reference only)