Part # MCP3421 I2C Reference datasheet

Part Manufacturer: Microchip


Part Description: 18-Bit ADC with I2C Interface and Onboard Reference DS

Part Details:

MCP3421 18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference Features Description · 18-bit ADC in a SOT-23-6 package The MCP3421 is a single channel low-noise, high · Differential input operation accuracy A/D converter with differential inputs and · Self calibration of Internal Offset and Gain per up to 18 bits of resolution in a small SOT-23-6 package. each conversion The on-board precision 2.048V reference voltageenables an input range of ±2.048V differentially · On-board Voltage Reference: ( voltage = 4.096V). The device uses a two-wire I2C - Accuracy: 2.048V ± 0.05% compatible serial interface and operates from a single - Drift: 15 ppm/°C 2.7V to 5.5V power supply. · On-board Programmable Gain Amplifier (PGA): The MCP3421 device performs conversion at rates of - Gains of 1,2, 4 or 8 3.75, 15, 60, or 240 samples per second (SPS) · On-board Oscillator depending on the user controllable configuration bit · INL: 10 ppm of FSR (FSR = 4.096V/PGA) settings using the two-wire I2C serial interface. Thisdevice has an on-board programmable gain amplifier · Programmable Data Rate Options: (PGA). The user can select the PGA gain of x1, x2, x4, - 3.75 SPS (18 bits) or x8 before the analog-to-digital conversion takes - 15 SPS (16 bits) place. This allows the MCP3421 device to convert a - 60 SPS (14 bits) smaller input signal with high resolution. The device - 240 SPS (12 bits) has two conversion modes: (a) Continuous mode and · One-Shot or Continuous Conversion Options (b) One-Shot mode. In One-Shot mode, the deviceenters a low current standby mode automatically after · Low current consumption: one conversion. This reduces current consumption - 145 µA typical greatly during idle periods. (VDD= 3V, Continuous Conversion) The MCP3421 device can be used for various high - 39 µA typical accuracy analog-to-digital data conversion applications (VDD= 3V, One-Shot Conversion with 1 SPS) where design simplicity, low power, and small footprint · Supports I2C Serial Interface: are major considerations. - Standard, Fast and High Speed Modes · Single Supply Operation: 2.7V to 5.5V Block Diagram · Extended Temperature Range: -40°C to 125°C

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MCP3421 I2C Reference.pdf Datasheet