MCP3221 MCP3221 2 Low-Power 12-Bit A/D Converter with I C Interface Features General Description 12-bit Resolution Microchips MCP3221 is a successive approximation A/D converter (ADC) with a 12-bit resolution. Available 1 LSB DNL, 2 LSB INL maximum in the SOT-23 package, this device provides one sin- 250 A Max Conversion Current gle-ended input with very low-power consumption. 5 nA Typical Standby Current, 1 A maximum Based on an advanced CMOS technology, the 2 I C Compatible Serial Interface MCP3221 provides a low maximum conversion current 2 C Standard mode - 100 kHz I and standby current of 250 A and 1 A, respectively. 2 Low-current consumption, combined with the small - 400 kHz I C Fast mode SOT-23 package, make this device ideal for battery- Up to 8 Devices on a Single 2-wire Bus powered and remote data acquisition applications. 2 C Fast mode 22.3 ksps in I Communication to the MCP3221 is performed using a Single-Ended Analog Input Channel 2 C compatible interface. Standard (100 kHz) 2-wire, I On-Chip Sample and Hold 2 and Fast (400 kHz) I C modes are available with the On-Chip Conversion Clock device. An on-chip conversion clock enables 2 Single-Supply Specified Operation: 2.7V to 5.5V C and conversion clocks. independent timing for the I Temperature Range: The device is also addressable, allowing up to eight devices on a single 2-wire bus. - Extended: -40C to +125C Small SOT-23-5 package The MCP3221 runs on a single-supply voltage that operates over a broad range of 2.7V to 5.5V. This device also provides excellent linearity of 1LSB Applications differential nonlinearity (DNL) and 2LSB integral Data Logging nonlinearity (INL), maximum. Multi-Zone Monitoring Handheld Portable Applications Package Type Battery-Powered Test Equipment 5-Pin SOT-23 Remote or Isolated Data Acquisition SCL 5 V 1 DD V 2 SS 4 SDA A 3 IN 2002-2017 Microchip Technology Inc. DS20001732E-page 1MCP3221 Functional Block Diagram V V DD SS DAC Comparator Sample 12-bit SAR + A and IN Hold Clock 2 Control Logic I C Interface SCL SDA DS20001732E-page 2 2002-2017 Microchip Technology Inc.