MAX1246AEEE+T

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Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. The MAX1246AEEE+T Analog to Digital Converter (ADC) is a low-cost, high-performance integrated circuit for data acquisition. The MAX1246AEEE+T is a complete, single-chip analog-to-digital converter (ADC) with a built-in track-and-hold amplifier.

The MAX1246AEEE+T utilizes a differential integrator, whose gain is fixed by an external resistor, for sample and hold and pipelined successive chopping for digital conversion. The MAX1246AEEE+T supports a wide range of input configurations ranging from single-ended unipolar to differential bipolar, and can convert signals within the ranges of 0 to 5 volts, 0 to 10 volts, ±2.5 volts and ±5 volts. The MAX1246AEEE+T has an absolute maximum input voltage and a maximum input voltage range of ±6 volts, so the total input voltage range is 0 to 12 volts. The MAX1246AEEE+T has a maximum conversion rate of 50 kilo samples per second, with a 0.5% FSR accuracy.

The MAX1246AEEE+T has an on-chip reference voltage generator that is capable of supplying a programmable internal or external reference voltage. The internal reference voltage can be set to 2.5 volts, and the external reference voltage can range from 0.5 volts to the supply voltage. The MAX1246AEEE+T also has a temperature compensation feature that can be enabled to automatically adjust the reference voltage for temperature variations.

The MAX1246AEEE+T also features an on-chip track-and-hold amplifier for signal conditioning and a sample and hold circuit for sample and hold. The center tap of the differential input buffer pairs with an external resistor and capacitor to form an external gain stage. This gain stage can be configured to provide a gain of one, two, four, or eight times the input level. The track-and-hold amplifier also contains a sample-rate reduction circuit that automatically reduces the sample rate of the ADC by a factor of four. This sample rate reduction allows the MAX1246AEEE+T to achieve higher accuracy at lower sample rates.

The MAX1246AEEE+T also has an on-chip power-down feature that can be enabled to reduce power consumption and extend the life of the device. The MAX1246AEEE+T also has an additional power-saving mode that can be enabled to reduce the power consumption of the device while the device is idle. This can significantly reduce the overall power consumption of the design.

The MAX1246AEEE+T is ideal for applications such as portable medical devices, battery operated systems, industrial data acquisition and instrumentation, automatic test equipment, and automotive applications. Its features and performance make it a suitable choice for many types of demanding data acquisition applications.

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