The LTC6561 4-channel system is designed with two levels of multiplexing. Four inputs are multiplexed into a single output. A second output MUX allows multiple LTC6561s to be combined to address 8-channel, 12-channel, 16-channel, or 32-channel applications. This results in smaller overall solutions and higher channel count in space-limited situations. In addition, it eliminates the need for external multiplexers, further reducing cost and size.
The LTC6561 operates from a 5V supply and draws only 180mW of power for the 4 channels. The LTC6561 is offered in a compact 4mm × 4mm 24-pin leadless QFN package with an exposed pad for thermal management and low inductance.