16-bit SAR ADC with PGA — one chip does the analog front-end
The MAX1300BEUG+ from Maxim Integrated is a 16-bit successive-approximation-register (SAR) ADC that integrates a programmable gain amplifier (PGA), an input multiplexer, a sample-and-hold, and the ADC core in a single 24-TSSOP package. It accepts either four differential or eight single-ended inputs, selectable through the MUX, and communicates over an SPI interface. The internal reference eliminates the need for an external voltage reference in many designs, though an external reference can also be driven.
PGA and internal reference — fewer external parts, cleaner BOM
The integrated PGA lets you amplify small sensor signals before conversion, which improves the effective resolution at low input levels. The internal reference is factory trimmed; using it saves a reference IC and its associated bypass capacitors. For designs that need a ratiometric measurement or a different reference voltage, the external reference input is available. The SAR architecture itself gives no pipeline delay, so the output code corresponds to the sample taken at the instant of the conversion start — important for multiplexed systems where channel timing matters.
Industrial temperature range and package
Supplied in tubes, which is typical for prototype and low-to-medium volume builds — reel options may exist under a different suffix.