描述 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.

特性 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