LT1999MPS8-10#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1999MPS8-10#PBF is a high voltage, bidirectional current sense amplifier manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.5V to 5.5V and draws a typical supply current of 1.55mA. The device features a fixed gain of 10V/V with a maximum gain accuracy of 0.5%. It provides an input common mode voltage range from –5V to 80V and supports a –3dB bandwidth of 2MHz. The component includes a low power shutdown mode consuming less than 10µA and is housed in an 8-lead MSOP package engineered for FMEA.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional current monitoring via external resistive shunt
• High common mode rejection ratio exceeding 80dB at 100kHz
• Integrated buffered output with selectable gain options
• Low power shutdown capability for minimizing consumption

Instrumentation, Op Amps, Buffer Amps Applications

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

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'MP' indicates the military-grade temperature range of –55°C to 150°C. Confirm the 'MS8' designation corresponds to the 8-lead MSOP package engineered for FMEA. Ensure the '#PBF' suffix denotes lead-free finish. Cross-reference the datasheet revision E specifications against the ordered lot to ensure compliance with the required electrical characteristics.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this part when bidirectional current sensing is required over a wide common mode range extending up to 80V. The 10V/V gain option suits applications requiring moderate amplification of the sense resistor voltage. Consider the MP grade for environments demanding operation down to –55°C. Verify that the 2MHz bandwidth meets the dynamic response requirements of the target circuit.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the LT1999 family of high-speed precision current sense amplifiers. The family offers three gain variants: 10V/V, 20V/V, and 50V/V. The MPS8 variant specifically utilizes the MSOP package optimized for failure mode effects analysis, distinguishing it from standard MSOP or SO packages within the same product line.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1999IMS8-10#PBF (Industrial Grade)

Instrumentation, Op Amps, Buffer Amps FAQ

How does the REF pin function?

The REF pin sets the output common mode level. It defaults to mid-supply via internal 160k resistors but can be overdriven by an external voltage source to adjust the output reference point.

What is the purpose of the SHDN pin?

The SHDN pin controls the shutdown mode. Pulling it below 0.5V activates low power shutdown, while leaving it floating allows the internal pull-up to keep the device active.