MAX9611AUB+

MAX9611AUB+ is a high-side current-sense amplifier with an integrated 12-bit ADC and a gain block that can be configured either as an op amp or comparator, making this device ideal for a number of industrial and automotive applications. It features a noninverting input-to-output configuration. The internal amplifier can be used to limit the inrush current or to create a current source in a closed-loop system. The comparator can be used to monitor fault events for fast response. An I2C-controlled 12-bit, 500sps analogue-to-digital converter (ADC) can be used to read the voltage across the sense resistor (VSENSE), the input common-mode voltage (VRSCM), op-amp/comparator output (VOUT), op-amp/comparator reference voltage (VSET), and internal die temperature. Applications include hybrid automotive power supplies, server backplanes, base-station PA control, base-station feeder cable bias-T, telecom cards, battery-operated equipment.

• Input common-mode range from 0 to 60V guaranteed by CMRR
• Power-supply input range from 2.7 to 5.5V guaranteed by PSRR
• Shutdown current is 5µA typical (no activity on SCL)
• Integrated 12-bit ADC, LSB step size is 13.44µV typ at gain=8x
• 500μV (max) current-sense ADC input offset voltage
• Gain error is 0.5% maximum at TA=+25°C, gain=8x
• I2C bus with 16 addresses
• Input bias current is 2µA maximum at TA=+25°C
• 10 µMAX package
• Operating Temperature Range from -40°C to +125°C

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