MCP3221

M 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 MCP3221 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. Communication to the MCP3221 is performed using a 2-wire, I2C compatible interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are available with the device. An on-chip conversion clock enables independent timing for the I2C and conversion clocks. The device is also addressable, allowing up to eight devices on a single 2-wire bus. The MCP3221 runs on a single supply voltage that operates over a broad range of 2.7V to 5.5V. This device also pr...