10-bit SAR ADC with flexible input mux
The Maxim Integrated MAX1249BEEE is a 10-bit SAR ADC with a 4-channel input multiplexer, sample-and-hold, and serial interface. It accepts differential, pseudo-differential, or single-ended inputs.
Industrial temperature grade and package
Rated for -40°C to 85°C operation, the MAX1249BEEE is specified for factory-floor enclosures, outdoor telecom cabinets, and engine-bay-adjacent electronics where commercial-grade parts drift out of spec. The 16-pin SSOP (3.90 mm width) and the alternate 16-QSOP supplier package keep board footprint small — useful for dense analog front-end cards or multi-channel data-logger modules. The part is surface-mount only; no through-hole variant exists.
Serial interface and external reference
Data transfer uses a standard SPI, QSPI, or MICROWIRE serial interface — no proprietary handshake, so it connects directly to most MCU SPI peripherals or FPGA soft-cores. The reference is external, meaning the designer picks the voltage reference that sets the LSB size and drift profile. That gives control over full-scale range and noise performance independent of the ADC supply.
RoHS status — plan your compliance review
The MAX1249BEEE is listed as RoHS non-compliant. If your BOM requires RoHS exemption or if you ship into EU/China markets with strict RoHS enforcement, factor in a compliance review or a lead-free alternative.