LT9890

RECOMMENDED FOR NEW DESIGNS

LT9890

150 A Current Monitor for Intel Psys Applications

RECOMMENDED FOR NEW DESIGNS

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1ku List Price Starting From $4.98

Features

Integrated current sense element
150 A current range
26,600:1 input-to-output current ratio (5 mA at 133 A)
±1.3% TUE maximum (I_SENSE = 45 A to 150 A)
3.2 MHz small-signal bandwidth (I_SENSE = 150 A)

150 μΩ current path resistance
Powered from 2.7 V to 65 V
Intel Psys compatible
Available in 108-terminal, 10 mm × 20 mm × 2.75 mm, LGA package

Additional Details

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 compatible with the Intel Psys (platform power) applications.

Applications

Computers and network servers
Intel central processing unit (CPU) motherboards
Network storage
Communication equipment
Electric vehicles
Photovoltaics

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

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FAQs

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Part Models 1

1ku List Price Starting From $4.98

Technical Documents 1

LT9890: 150 A Current Monitor for Intel Psys Applications Data Sheet (Rev.A) 07/26/2023

Design Resources 1

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT9890AV#PBF	108-Terminal Land Grid Array [LGA] (10 mm x 20 mm x 2.75 mm)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

LT9890AV#PBF
Pin/Package Drawing
108-Terminal Land Grid Array [LGA] (10 mm x 20 mm x 2.75 mm)
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

EVAL-LT9890

Evaluating the LT9890, 150 A Current Monitor for Intel Psys Applications

Evaluating the LT9890, 150 A Current Monitor for Intel Psys Applications

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EVAL-LT9890

Evaluating the LT9890, 150 A Current Monitor for Intel Psys Applications

Features and Benefits

Fully featured evaluation board for the LT9890
Response bandwidth greater than 1 MHz
Compatible with Intel VR14 Psys systems

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Product Detail

The EVAL-LT9890-A1Z showcases the LT9890 high-precision current monitor with internal current-sense element supporting up to 150 A of load current. The LT9890 IOUT pin outputs a monitor current with 26600:1 ratio to the pass current flowing through IP to IM pins. The IOUT monitor current flows through an external ground referenced 200 Ω || 100 pF network (~8 MHz low-pass filter) to the P4 (1×2, 100 mil) and J1 (SMA) headers for convenient measurement. The LT9890 current sense element is factory calibrated to 1% of the total unadjusted error and has a zero-temperature coefficient architecture. The IOUT current monitor has a response bandwidth greater than 1 MHz, providing a fast and accurate ground-referenced output signal 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. In addition, the LT9890 is compatible with Intel VR14 Psys systems. The key performance characteristics of the EVAL-LT9890-A1Z are shown in the Performance Summary.

Design files for the EVAL-LT9890-A1Z are available on the EVALLT9890 evaluation board page.

For full details on the LT9890, see the LT9890 data sheet, which should be consulted in conjunction with this user guide when using the EVAL-LT9890-A1Z evaluation board.

Resources

XLS

EVAL-LT9890 BOM

47 K

PDF

UG-2210: Evaluating the LT9890, 150 A Current Monitor for Intel Psys Applications (Rev.0)

366.86 K

EVAL-LT9890

Evaluating the LT9890, 150 A Current Monitor for Intel Psys Applications

LTspice 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.