ADM1191-2ARMZ-R7

ADM1191 is an integrated current sense amplifier that offers digital current and voltage monitoring via an on-chip 12bit analogue-to-digital converter(ADC), communicated through an I2C® interface (digital power monitor with convert pin and ALERTB output). An internal current sense amplifier measures voltage across the sense resistor in the power path via the VCC pin and the SENSE pin. A 12bit ADC can measure the current seen in the sense resistor, as well as the supply voltage on the VCC pin. An industry-standard I2C interface allows a controller to read current and voltage data from the ADC. Measurements can be initiated by an I2C command or via the convert (CONV) pin. The CONV pin is especially useful for synchronizing reads on multiple ADM1191 devices. Typical application includes power monitoring/power budgeting, central office equipment, telecommunications and data communications equipment and PCS/servers.

• Powered from 3.15V to 26V
• Precision current sense amplifier
• Precision voltage input
• 12bit ADC for current and voltage readback
• Convert (CONV) pin for commanding an ADC read
• SETV input for setting overcurrent alert threshold
• ALERTB output provides an overcurrent interrupt
• I2C fast mode -compliant interface (400KHz maximum)
• 2 address pins allow 16 devices on the same bus
• 10 lead MSOP package, operating temperature range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party