MAX1364

19-3338; Rev 1; 3/05 www.DataSheet4U.com 4-Channel, 12-Bit System Monitors with Programmable Trip Window and SMBus Alert Response General Description The MAX1363/MAX1364 low-power, 12-bit, 4-channel analog-to-digital converters (ADCs) feature a digitally programmable window comparator with an interrupt output for automatic system-monitoring applications. Once configured, monitor mode automatically asserts an interrupt when any analog input exceeds the programmed upper or lower thresholds, without interaction to the host. The MAX1363/MAX1364 respond to the SMBus™ alert, allowing quick identification of the alarming device on a shared interrupt. A programmable delay between monitoring intervals lowers power consumption for reduced monitoring rates. In addition, the MAX1363/MAX1364 integrate an internal voltage reference, a clock, and a 1.7MHz, highspeed, I2C™-compatible, 2-wire serial interface. The optimized interface allows a maximum conversion rate of 94.4ksps in normal mode while reading back the conversion results. Each of the four analog inputs is configurable for single-ended or fully differential operation and unipolar or bipolar operation. Two scan modes utilize on-chip random access memory (RAM) to allow eight conversions of a selected channel or scanning of a group of channels to reduce interface overhead. These devices operate from a single 2.7V to 3.6V (MAX1363) or 4.5V to 5.5V (MAX1364) supply and require only 436µA at the maximum sampling rate of 133ksps in mon...