MAX1146BCUP+

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The MAX1146BCUP+ is a monolithic, correlated double sampling (CDS) analog-to-digital converter (ADC) designed for data acquisition applications. It is a very high performance, 12-bit resolution device, that operates from a single 5V supply and draws less than 10 mW of power. Its compact 24-pin package includes sample and hold circuits, making it suitable for data acquisition systems in consumer, industrial and automotive applications.

The MAX1146BCUP+ incorporates a unique double-track track-and-hold circuit, allowing it to sample and hold multiple analog signals simultaneously. The ADC can be configured to sample and hold conflicting signals, such as those with a high common mode voltage, requiring a single-ended conversion. Also, the device has an onboard reference circuit, which supplies an output reference voltage of 2.5V that can be used for either full- or half-scale conversions.

The MAX1146BCUP+ features differential non-linearity (DNL) of ±1LSB or better and integral non-linearity (INL) of ±1.5LSB (maximum). Its high speed, low power, and low sample and hold offsets make it ideal for signal conditioning and data acquisition applications in industrial and consumer electronic applications, such as medical diagnostic, portable transducers, automotive controls, industrial process control, consumer audio and video, and remote sensing applications.

The main application field and working principles of the MAX1146BCUP+ are based on three core components:

• Input signal
• Reference voltage
• Analog-to-digital conversion

The input signal is applied to the MAX1146BCUP+ in the form of a single-ended or differential input signal. The signal is then applied to the sample-and-hold circuit, which captures the signal and stores it in the device’s sample-and-hold cells. The voltage reference is then used to convert the analog signal into digital form. The reference voltage is also applied to the input signal, so that it is converted to a digital representation. The digital representation is then used to calculate the digital output.

The analog-to-digital converter of the MAX1146BCUP+ is based on the correlated double sampling technique. This technique ensures that the digitized values are accurate and unbiased. The ADC also features an integrated resetting circuit that can be used to reset and start the ADC. The ADC also incorporates a temperature-compensated crystal oscillator (TCXO) that can be used to provide a stable timing reference.

The MAX1146BCUP+ provides superior performance and accuracy, being ideal for many high-resolution data acquisition applications. Its low power consumption and small form factor make it suitable for portable and remote sensing applications. It provides 12-bit resolution, allowing the ADC to capture and process a wide range of signals. Additionally, its onboard reference and clock circuit allows it to be used in systems that require precision and accuracy.

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