LT1999CMS8-10F#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1999CMS8-10F#PBF is a high-speed precision current sense amplifier from Analog Devices, designed for bidirectional current monitoring over a wide common-mode range. It features a fixed gain of 10V/V and operates on an independent 5V supply with a typical quiescent current of 1.55mA. The device offers a –5V to 80V input common-mode voltage range and includes a low-power shutdown mode drawing less than 10µA. Packaged in an 8-lead MSOP with an FMEA-engineered pinout, it supports operation from 0°C to 70°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional current sensing via external resistive shunt with output indicating magnitude and direction
• Wide common-mode input range extending from –5V to 80V for high-side or low-side applications
• Integrated shutdown mode for minimizing power consumption when not in use
• Engineered 8-lead MSOP pinout option designed for Failure Mode and Effects Analysis

Instrumentation, Op Amps, Buffer Amps Applications

• H-Bridge motor controls
• Switching power supplies
• Solenoid current monitoring
• Battery charge current measurement

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'F' indicates the MSOP package variant engineered for FMEA compliance, distinct from standard pinouts. Confirm the temperature grade 'C' aligns with commercial operating limits of 0°C to 70°C. Ensure the ordering code matches the required 10V/V gain configuration. Cross-reference the datasheet revision to confirm electrical characteristics remain consistent with design requirements.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring precise bidirectional current monitoring within a wide common-mode voltage window. The fixed 10V/V gain suits scenarios where moderate amplification of small differential voltages is sufficient. Consider the FMEA pinout if robustness against manufacturing defects is critical. Verify that the 5V supply constraint and 1.55mA quiescent current fit the system power budget.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1999 family of high-voltage current sense amplifiers, which also includes variants with 20V/V and 50V/V gains. The series is available in multiple packages including SO and standard MSOP, alongside the FMEA-specific MSOP. It serves as a solution for monitoring currents in demanding environments such as automotive and industrial systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1999CMS8-10#PBF (Standard MSOP Pinout)

Instrumentation, Op Amps, Buffer Amps FAQ

What is the function of the 'F' suffix in the part number?

The 'F' suffix denotes the 8-lead MSOP package with a pinout specifically engineered for Failure Mode and Effects Analysis (FMEA).

How does the device handle bidirectional current flow?

The output voltage polarity relative to the REF pin indicates the direction of the sensed current, while the magnitude corresponds to the current level.