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MCP3550 - Single-Channel 22-Bit Delta-Sigma ADCs

General Description

The Microchip Technology Inc.

MCP3550/1/3 devices are 2.7V to 5.5V low-power, 22-bit Delta-Sigma Analog-to-Digital Converters (ADCs).

The devices offer output noise as low as 2.5 µVRMS, with a total unadjusted error of 10 ppm.

Key Features

  • 22-bit ADC in Small 8-pin MSOP Package with Automatic Internal Offset and Gain Calibration.
  • Low-Output Noise of 2.5 µVRMS with Effective Resolution of 21.9 bits (MCP3550/1).
  • 3 µV Typical Offset Error.
  • 2 ppm Typical Full Scale Error.
  • 6 ppm Maximum INL Error.
  • Total Unadjusted Error Less Than 10 ppm.
  • No Digital Filter Settling Time, Single-Command Conversions through 3-wire SPI Interface.
  • Ultra-Low Conversion Current (MCP3550/.

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Full PDF Text Transcription (Reference)

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MCP3550/1/3 Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs Features • 22-bit ADC in Small 8-pin MSOP Package with Automatic Internal Offset and Gain Calibration • Low-Output Noise of 2.5 µVRMS with Effective Resolution of 21.9 bits (MCP3550/1) • 3 µV Typical Offset Error • 2 ppm Typical Full Scale Error • 6 ppm Maximum INL Error • Total Unadjusted Error Less Than 10 ppm • No Digital Filter Settling Time, Single-Command Conversions through 3-wire SPI Interface • Ultra-Low Conversion Current (MCP3550/1): - 100 µA typical (VDD = 2.7V) - 120 µA typical (VDD = 5.0V) • Differential Input with VSS to VDD Common Mode Range • 2.7V to 5.5V Single-Supply Operation • Extended Temperature Range: - -40°C to +125°C Description The Microchip Technology Inc. MCP3550/1/3 devices are 2.7V to 5.