LT1999CMS8-10#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1999CMS8-10#TRPBF is a high-speed, bidirectional current sense amplifier manufactured by Analog Devices Inc. It features a fixed gain of 10V/V and operates from an independent 5V supply with a typical quiescent current of 1.55mA. The device supports a common mode input voltage range from –5V to 80V and provides a buffered output referenced to mid-supply or an external REF pin. Key electrical specifications include a 2MHz bandwidth, 3V/µs slew rate, and a maximum input offset voltage of 1.5mV. It is housed in an 8-lead MSOP package and is specified for commercial operating temperatures from 0°C to 70°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional current sensing capability over a wide common mode range extending from negative voltages to 80V
• Integrated shutdown mode that reduces power consumption to less than 10µA when activated
• High common mode rejection ratio exceeding 80dB at 100kHz for accurate signal processing
• Robust input protection with 4kV HBM and 1kV CDM tolerance ratings

Instrumentation, Op Amps, Buffer Amps Applications

• H-Bridge motor control systems
• Switching power supply monitoring
• Solenoid current sensing
• Battery charge current measurement

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific temperature grade and package variant against project requirements before ordering. Confirm that the #TRPBF suffix indicates tape and reel packaging suitable for automated assembly processes. Ensure the selected gain option matches the system design needs, as the LT1999 series offers distinct gain configurations. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when bidirectional current monitoring is required within a high common mode voltage environment. The fixed 10V/V gain makes it suitable for applications where moderate amplification of shunt voltage is sufficient. Consider the 0°C to 70°C commercial temperature range limits compared to industrial or automotive grades if environmental conditions vary. Evaluate the need for the shutdown feature to manage power budgets in battery-operated designs.

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 CMS8 designation identifies the commercial temperature grade and MSOP package style. The #TRPBF suffix specifically denotes the tape and reel packaging format with lead-free finish, distinguishing it from tube-packaged equivalents like the #PBF version.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1999CMS8-10#PBF