Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The Microchip Technology Inc. MCP3221 is a succes- sive approximation A/D converter with 12-bit resolu- tion. Available in the SOT-23 package, this device provides one single-ended input with very low power consumption. Based on an advanced CMOS technol- ogy, the MCP3221 provides a low maximum conver- sion 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.
Communication to the MCP3221 is performed using a 2-wire, I 2C compatible interface. Standard (100 kHz) and Fast (400 kHz) I 2C modes are available with the device. An on-chip conversion clock enables indepen- dent timing for the I 2C and conversion clocks. The device is also addressable, allowing up to eight devices on a single 2-wire bus.
MCP3221 Maximum Ratings
VDD...................................................................................7.0V Analog input pin w.r.t. VSS.......... ............. -0.6V to VDD +0.6V SDA and SCL pins w.r.t. VSS........... ......... -0.6V to VDD +1.0V Storage temperature ..................................-65°C to +150°C Ambient temp. with power applied .............-65°C to +125°C Maximum Junction Temperature.......... .........................150°C ESD protection on all pins (HBM) ......... ........................ 4kV
MCP3221 Features
• 12-bit resolution • ±1 LSB DNL, ±2 LSB INL max. • 250 µA max conversion current • 5 nA typical standby current, 1 µA max. • I 2C™ 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 I 2C 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
MCP3221 Typical Application
• Data Logging • Multi-zone Monitoring • Hand-Held Portable Applications • Battery-Powered Test Equipment • Remote or Isolated Data Acquisition