MCP331 Provides Low-Distortion And High-Accuracy Interface

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New SAR ADC Family Enables High-Speed, High-Resolution Analog-to-Digital Conversion in Harsh Environments

                                     

The MCP331x1(D)-xx family ranges in resolution from 12-, 14- and 16-bit, with speed options ranging from 500 kilo samples per second (ksps) to 1 Msps, allowing developers to choose the right ADC for their designs.

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A fixed low analog supply voltage (AVDD) of 1.8V and low-current operation (1.6 mA typical active current for 1 Msps and 1.4 mA for 500 ksps) enables this family of ADCs to have an ultra-low power consumption, while maintaining a wide input full-scale range.

These devices support a wide digital I/O interface voltage (DVIO) range (1.7V – 5.5V) which allows it to interface with most host devices, including Microchip’s PIC32, AVR® and Arm®-based microcontrollers and microprocessors.

This eliminates the need for using external voltage level shifters. The MCP331x1(D)-xx family contains both single-ended and differential input voltage measurement options, enabling systems to convert the difference between any two arbitrary waveforms.

Ideal for applications such as high-precision data acquisition, electric vehicle battery management, motor control and switch-mode power supplies, the AEC-Q100-qualified family provides reliable performance across harsh environments.

                    Properly interfacing a small analog signal to a high-speed, high-resolution ADC without introducing additional noise and distortion is a critical challenge.

Development Tools

 The MCP331x1D-XX Evaluation Kit is available to demonstrate the performance of the MCP331x1D-XX SAR ADC family devices. The evaluation kit includes the following:

  • MCP331x1D Evaluation Board
  • PIC32MZ EF MCU Curiosity Board for data collection
  • SAR ADC Utility PC Graphical User Interface (GUI)

Features :-

  • 16-bit resolution
  • Differential input
  • SPI interface
  • ±0.8 LSB Typical DNL
  • ±2 LSB Typical INL
  • 1 Msps sample rate
  • -40 to +125°C temperature range
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32-Bit ADCs With Low Noise And High Integration

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