ADM1293-2AACPZ-RL

ADM1293 is a digital power monitor offers digital current, voltage and power monitoring using an on-chip, 12bit analogue-to-digital converter (ADC), communicated through a PMBus™ compliant I²C interface. This device acquires the current by measuring the voltage difference across the external sense resistor. This voltage is amplified and digitized by an internal 12bit ADC. The same ADC can also sample the primary input voltage and an auxiliary input voltage. The internal digital block can perform multiplication of the current and primary input voltage for power calculation. The host controller can then combine this information with a known sense resistor value to calculate the current, voltage, power and energy consumption over time on the monitored rail. Typical applications are power monitoring/power budgeting, central office equipment, telecommunications and data communications equipment, PCs/servers.

• An industry-standard PMBus interface allows host controller to read back these data from device
• Monitor current and two voltages, high accuracy current monitoring at low sense voltage
• 0.33% accurate at ±20mV sense voltage over temperature
• Reports current, voltage, and power, power accumulation for energy metering
• Bidirectional current sensing, digitally programmable overcurrent alert
• Multifunctional pins with user configurable functions, ADC conversion enable input
• Multisource alert output, user-controllable GPO, PMBus fast mode compliant interface
• Separate SDA I/O for easy isolated communication, two address pins for 16 unique I²C addresses
• Operating voltage range from 2.95 to 20V (VCC=2.95V to 20V, VSENSEP=0V to 20V, TA=−40°C to +105°C)
• 16-lead LFCSP-WQ package, −40°C to +105°C temperature rating

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