BUY MAX454CPD+ https://www.utsource.net/itm/p/7519171.html
Video Amp, 1 4:1 Multiplexer-Amplifier 14-PDIP
+ Description: Low-Cost, Single-Supply, 8-Channel, 10-Bit A/D Converter Features: * 8-channel single-ended or 4-channel differential inputs * 10-bit accuracy * Low cost * Single +5V supply * Low power consumption * TTL/CMOS compatible logic levels * On-chip track-and-hold * Low input capacitance * High common-mode rejection Applications: * Data acquisition systems * Industrial process control * Instrumentation * Automotive systems * Medical systems * Portable systems (For reference only)