8-bit SAR ADC with flexible input mux
The Maxim Integrated MAX1110EAP+ is an 8-bit successive-approximation (SAR) ADC with a built-in input multiplexer, sample-and-hold, and SPI serial interface. It accepts either differential or single-ended inputs, configurable as 4 differential or 8 single-ended channels. Typical applications include portable instrumentation, battery-monitoring circuits, and industrial sensor interfaces where moderate-speed data acquisition is needed.
Differential vs single-ended input selection
The input configuration is set by the mux — 4 differential pairs or 8 single-ended lines. Differential mode rejects common-mode noise on the input lines, useful when the sensor signal travels a few feet of cable in an electrically noisy environment. Single-ended mode doubles the channel count for local signals referenced to the same ground. The external or internal reference option lets you match the ADC span to the sensor output range without an extra reference IC.
Housed in a 20-pin SSOP (0.209" body width, 5.30 mm), the MAX1110EAP+ is a surface-mount part suited for compact PCBs. The ROHS3-compliant, lead-free finish is current for EU and global RoHS directives.