LT9890 Datasheet | Analog Devices

FEATURES - Integrated current sense element - 150 A current range - 26,600:1 input-to-output current ratio (5 m A at 133 A) - ±1.3% TUE maximum (ISENSE = 45 A to 150 A) - 3.2 MHz small-signal bandwidth (ISENSE = 150 A) - 150 μΩ current path resistance - Powered from 2.7 V to 65 V - Intel Psys patible - Available in 108-terminal, 10 mm × 20 mm × 2.75 mm, LGA package APPLICATIONS - puters and network servers - Intel central processing unit (CPU) motherboards - Network storage - munication equipment - Electric vehicles - Photovoltaics TYPICAL APPLICATION CIRCUIT FUNCTIONAL BLOCK DIAGRAM Figure 2. Functional Block Diagram (RS Is the Sense Resistor, and RG Is the Gain Resistor.) GENERAL DESCRIPTION The LT9890 is a high-precision current monitor with an internal current-sense element supporting up to 150 A of load current. Factory calibration of the current-sense element and a zero temperature coefficient architecture results in less than 1.3% total unadjusted error (TUE). A 26,600:1 input-to-output current ratio with a response bandwidth greater than 3 MHz provides a fast and accurate ground-referenced output signal while being insensitive to ground voltage variations. Minimal power loss is achieved through a low, 150 μΩ current-path resistance and an aspect ratio conducive to wide printed circuit board (PCB) traces. Input voltages from 2.7 V to 65 V are supported. The LT9890 is patible with the Intel Psys (platform power) applications. Figure 1. Typical Application Circuit Figure 3. Output Current (IOUT) TUE vs. IIN Rev. 0 DOCUMENT FEEDBACK TECHNICAL SUPPORT Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices....