Maxim Integrated Products has introduced what it says is the industry's smallest 2-channel ADC. The MAX11645 12-bit I2C ADC includes an internal reference in a tiny 1.9mm x 2.2mm wafer-level package (WLP).

A 4 x 3 bump array with 0.5mm pitch facilitates layout on four-layer PCBs, while a slim 0.64mm height makes it well-suited for designs laying components out on both sides of the PCB. Applications range from energy-harvesting sensors, to portable consumer electronics, to point-of-load monitoring (voltage, current, and temperature) in networking and computer systems.

Key highlights:

•Ultra-Tiny 1.9mm x 2.2mm Wafer Level Package
•High-Speed I²C-Compatible Serial Interface
◦400kHz Fast Mode
◦1.7MHz High-Speed Mode
•Single-Supply
◦2.7V to 3.6V (MAX11645)
◦4.5V to 5.5V (MAX11644)
•Internal Reference
◦2.048V (MAX11645)
◦4.096V (MAX11644)
•External Reference: 1V to VDD
•Internal Clock
◦2-Channel Single-Ended or 1-Channel Fully Differential
•Internal FIFO with Channel-Scan Mode
•Low Power
◦670µA at 94.4ksps
◦230µA at 40ksps
◦60µA at 10ksps
◦6µA at 1ksps
◦0.5µA in Power-Down Mode
•Software-Configurable Unipolar/Bipolar