The MAX1227/MAX1229/MAX1231 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and temperature sensor. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. With an external clock, they can sample up to 300ksps. The MAX1231 has 16 input channels, the MAX1229 has 12 input channels, and the MAX1227 has 8 input channels. All input channels can be configured for unipolar or bipolar mode, single-ended or differential inputs. They all operate from a +3V supply and include a 10MHz, SPI™/QSPI™/MICROWIRE™-compatible serial interface. The MAX1231 is available in a 28-pin 5mm x 5mm TQFN with exposed pad, and a 24-pin QSOP package. The MAX1227/MAX1229 are available in QSOP packages only. All three devices are specified over the extended temperature range of -40°C to +85°C.
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