Description
The Microchip Technology Inc. MCP3221 is a successive approximation A/D converter with 12-bit resolution. Available in the SOT-23 package, this device provides one single-ended input with very low power consumption. Based on an advanced CMOS technology, the MCP3221 provides a low maximum conversion current and standby current of 250 µA and 1 µA, respectively. Low current consumption, combined with the small SOT-23 package, make this device ideal for battery-powered and remote data acquisition applications.

Features
• 12-bit resolution
• ±1 LSB DNL, ±2 LSB INL max.
• 250 µA max conversion current
• 5 nA typical standby current, 1 µA max.
• I2C™ compatible serial interface
    - 100 kHz I2C Standard Mode
    - 400 kHz I2C Fast Mode
• Up to 8 devices on a single 2-Wire bus
• 22.3 ksps in I2C Fast Mode
• Single-ended analog input channel
• On-chip sample and hold
• On-chip conversion clock
• Single-supply specified operation: 2.7V to 5.5V
• Temperature range:
    - Industrial: -40°C to +85°C
    - Extended: -40°C to +125°C
• Small SOT-23 package

Applications
• Data Logging
• Multi-zone Monitoring
• Hand-Held Portable Applications
• Battery-Powered Test Equipment
• Remote or Isolated Data Acquisition