MCP3421 Analog to Digital Converter Board - (AD45881)

Description:

The MCP3421 ADC can be used for various high accuracy analog-to-digital data conversion applications where ease of use, low power consumption and small size are important considerations. The MCP3421 is a low noise, high accuracy delta-sigma A/D converter. This converter has differential inputs and up to 18-bits of resolution in a tiny SOT-23-6 package.

The on-board precision 2.048V reference voltage allows a differential input range of ± 2.048V. The device uses a two-wire I2C™ compatible interface and operates from a single power supply ranging from 2.7V to 5.5V. The MCP3421 ADC performs conversions at rates of 3.75, 15, 60, or 240 samples per second with corresponding resolutions of 18, 16, 14, and 12 bits. The on-board programmable gain amplifier (PGA) provides a gain of up to 8x. The device has two conversion modes: Continuous mode and One-Shot mode. In One-Shot mode, the device enters a low-current standby mode automatically after one conversion, greatly reducing power usage.

Features:

- 18-bit Resolution

- Small SOT-23 6-pin Package

- Differential Input Operation

- On-Board Voltage Reference with 5ppm/°C Drift

- On-Board PGA

- Gains of 1, 2, 4, 8

- Programmable Data Rate Options:

    - 3.75 SPS (18 bits)

    - 15 SPS (16 bits)

    - 60 SPS (14 bits)

    - 240 SPS (12 bits)

- INL 10 ppm of FSR max

- Low Current Consumption: 145µA at 3V

- Single-shot or Continuous Conversion Options

- Supports I2C™ Serial Interface

- Extended Temperature Range: -40°C to +125°C

Reference Link