MAX146BCAP+

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Introduction

The MAX146BCAP+ is a high performance, low power, 10-bit analog-to-digital converter (ADC). It is designed to provide excellent performance and features that are not available in other 10-bit converters. The MAX146BCAP+ includes a low noise, ±2.5V input range, a fast acquisition time of 1.5μs, low power consumption, and a wide supply voltage range from 2.7 to 5.5V. The high resolution, accuracy and flexibility of the MAX146BCAP+ make it ideal for applications such as medical instrumentation, laboratory equipment, and imaging systems.

Features and Benefits

• Broad Supply Voltage Range: 2.7V to 5.5V.
• High Resolution and Accuracy: 10-bit resolution with 0.5% maximum non-linearity error.
• Low Noise: 8μV RMS noise over 10 – 20 kHz bandwidth.
• Low Power Consumption: 1.5mW typ.
• Fast Acquisition Time: 1.5μs typical.
• High Speed Sample Rate: 400kHz for unipolar single-ended conversions and 600kHz for bipolar single-ended conversions.

Application Field

The MAX146BCAP+ is used in many different applications including medical instrumentation, laboratory equipment, and imaging systems. In medical instrumentation, the MAX146BCAP+ can be used to accurately measure vital signs such as blood pressure, heart rate, and oxygen saturation. In laboratory equipment, the high resolution and accuracy of the MAX146BCAP+ make it ideal for use in measuring the output of various types of sensors. And, in imaging systems, the MAX146BCAP+ is used to measure the intensity of light from various sources.

Working Principle

The MAX146BCAP+ uses an extended scale non-linearity (ESO) algorithm for its analog-to-digital conversions. This algorithm divides the input analog range into 1024 equal increments and then non-linearly maps these increments onto a 10 bit output register. The result is a 10 bit output that is more accurate than what would be achieved if the input was divided into only 256 increments. The MAX146BCAP+ also includes a built-in analog multiplexer (MUX) with up to 8 inputs that can be used to sample several different analog signals. The multiplexer can be programmed with either a serial or a parallel interface depending on the user’s requirements.

The MAX146BCAP+ is capable of high speed conversions of up to 400kHz for unipolar single-ended and 600kHz for bipolar single-ended conversions. The high speed is achieved through the use of an optimized temperature-compensated band-gap reference and a fast eight-channel multiplexer. The fast multiplexer offers a maximum settling time of 3µs, while the temperature-compensated reference provides high accuracy and stability over the entire supply range.

Conclusion

The MAX146BCAP+ is a high performance, low power 10-bit analog-to-digital converter with excellent accuracy and flexibility. Its broad supply voltage range and low power consumption make it ideal for a variety of applications. It also includes a fast multiplexer and temperature-compensated reference to allow for high speed conversions. The MAX146BCAP+ is an ideal solution for applications where high resolution and accuracy are required.

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