Description

The MAX1067/MAX1068 low-power, multichannel, 14-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, integrated +4.096Vreference, a reference buffer, an internal oscillator,automatic power-down, and a high-speed SPI™/QSPI™/MICROWIRE™-compatible interface. The MAX1067/MAX1068 operate with a single +5V analogsupply and feature a separate digital supply, allowingdirect interfacing with +2.7V to +5.5V digital logic.The MAX1067/MAX1068 consume only 3.6mA (AVDD =DVDD = +5V) at 200ksps when using an external reference.AutoShutdown™ reduces the supply current to185µA at 10ksps and to less than 10µA at reduced samplingrates.The MAX1067 includes a 4-channel input multiplexer, andthe MAX1068 accepts up to eight analog inputs.In addition, digital signal processor (DSP)-initiated conversionsare simplified with the DSP frame-sync input andoutput featured in the MAX1068. The MAX1068 includes adata-bit transfer input to select between 8-bit-wide or 16-bit-wide data-transfer modes. Both devices feature a scanmode that converts each channel sequentially or onechannel continuously.Excellent dynamic performance and low power, combinedwith ease of use and an integrated reference,make the MAX1067/MAX1068 ideal for control and data-acquisitionoperations or for other applications withdemanding power consumption and space requirements.The MAX1067 is available in a 16-pin QSOPpackage, and the MAX1068 is available in a 24-pinQSOP package. Both devices are guaranteed over thecommercial (0°C to +70°C) and extended (-40°C to+85°C) temperature ranges. Use the MAX1168 evaluationkit to evaluate the MAX1068.ApplicationsAccelerometer MeasurementsData Acquisition SystemsIndustrial I/O ModulesIndustrial Process ControlsMotor ControlThermocouple Measurements