MAX1112C

Product Summary

The MAX1112C is an Analog to Digital Converter. The MAX1112C low-power, 8-bit, 8-channel analog-to-digital converters (ADCs) feature an internal track/hold, voltage reference, clock, and serial interface. They operate from a single 4.5V to 5.5V supply and consume only 135μA while sampling at rates up to 50ksps. The MAX1112C’s 8 analog inputs and the MAX1113’s 4 analog inputs are software-configurable, allowing unipolar/bipolar and single-ended/differential operation. Successive-approximation conversions are performed using either the internal clock or an external serial-interface clock. The full-scale analog input range is determined by the 4.096V internal reference, or by an externally applied reference ranging from 1V to VDD. The 4-wire serial interface is compatible with the SPI™, QSPI™, and MICROWIRE™ serial-interface standards. A serial-strobe output provides the end-of-conversion signal for interrupt-driven processors. The applications of the MAX1112C include Portable Data Logging, Hand-Held Measurement Devices, Medical Instruments, System Diagnostics and Solar-Powered Remote Systems.

Parametrics

MAX1112C absolute maximum ratings: (1)VDD to AGND: -0.3V to +6V; (2)AGND to DGND: -0.3V to +0.3V; (3)CH0–CH7, COM, REFIN, REFOUT to AGND: -0.3V to (VDD + 0.3V); (4)Digital Inputs to DGND: -0.3V to +6V; (5)Digital Outputs to DGND: -0.3V to (VDD + 0.3V); (6)Continuous Power Dissipation (TA = +70℃) QSOP (derate 8.30mW/℃ above +70℃): 667mW; (7)SSOP (derate 8.00mW/℃ above +70℃): 640mW; (8)Operating Temperature Ranges: 0℃ to +70℃; (9)Storage Temperature Range: -65℃ to +150℃; (10)Lead Temperature (soldering, 10s): +300℃; (11)Soldering Temperature (reflow): +260℃.

Features

MAX1112C features: (1)4.5V to 5.5V Single Supply; (2)Low Power: 135μA at 50ksps; (3)8-Channel Single-Ended or 4-Channel Differential Inputs ; (4)Internal Track/Hold, 50kHz Sampling Rate; (5)Internal 4.096V Reference; (6)SPI/QSPI/MICROWIRE-Compatible Serial Interface; (7)Software-Configurable Unipolar or Bipolar Inputs.

Diagrams