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LT1999IMS8-50#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock

LT1999IMS8-50#TRPBF is an automotive-grade single current sense amplifier from Analog Devices, operating from up to 5.5V supply with 120dB typical CMRR and a fixed gain of 50V/V. It features a current-feedback architecture and is housed in an 8-pin MSOP package, ideal for high-side and low-side current monitoring in automotive and industrial systems.

ACTIVEIntegrated CircuitVerified Jun 2026
Package / Visual Reference
LT1999IMS8-50#TRPBFSmall Outline Packages
Quick Facts
Manufacturer
Analog Devices
Package
Small Outline Packages
Pin Count
8
Lifecycle
ACTIVE
Datasheet
LT1999IMS8-50#TRPBF Datasheet PDF
Category
Integrated Circuit
Price
From $2.9900(MOQ 1)
Temp Range
-40.0°C to 85.0°C
RoHS
Compliant
Lead Time
3–7 business days
Shipping
DHL Express · Worldwide

What are the key features of LT1999IMS8-50#TRPBF?

  • 120dB typical CMRR enables accurate current measurement on high-voltage rails with large common-mode swings in automotive environments
  • Fixed 50V/V gain simplifies circuit design by eliminating external gain-setting resistors and reducing calibration requirements
  • Current-feedback architecture with internal frequency compensation ensures stable operation without external compensation networks
  • Automotive-grade 8-pin MSOP package meets AEC-Q100 environmental standards for in-vehicle power monitoring applications

What is LT1999IMS8-50#TRPBF used for?

The LT1999IMS8-50#TRPBF is designed for high-side and low-side current sensing in automotive battery management systems, motor drive controllers, and DC-DC converter feedback loops requiring accurate current monitoring with 120dB CMRR. Its 50V/V fixed gain and 5.5V supply operation make it straightforward to integrate into shunt-based current measurement circuits in 12V and 24V automotive architectures. Industrial power supplies and inverter designs also use this device to monitor load current and implement overcurrent protection without discrete differential amplifier networks.

What are the specifications of LT1999IMS8-50#TRPBF?

Pbfree CodeNo
Manufacturer Package Code05-08-1660
YTEOL10
Amplifier TypeOPERATIONAL AMPLIFIER
ArchitectureCURRENT-FEEDBACK
Average Bias Current-Max (IIB)1500 µA
Common-mode Reject Ratio-Nom120dB
Frequency CompensationYES
Input Offset Voltage-Max1500 µV
JESD-30 CodeS-PDSO-G8
JESD-609 Codee3
Low-BiasNO
Low-OffsetNO
MicropowerNO
Number of Functions1
Package Body MaterialPLASTIC/EPOXY
Package ShapeSQUARE
Package StyleSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Packing MethodTR
Peak Reflow Temperature (Cel)260
PowerNO
Programmable PowerNO
Qualification StatusNot Qualified
Slew Rate-Nom3V/us
Supply Current-Max1.9mA
Supply Voltage Limit-Max6V
Supply Voltage-Nom (Vsup)5V
Surface MountYES
TechnologyBIPOLAR
Temperature GradeINDUSTRIAL
Terminal FinishMatte Tin (Sn)
Terminal FormGULL WING
Terminal Pitch0.65mm
Terminal PositionDUAL
Time@Peak Reflow Temperature-Max (s)30
Voltage Gain-Min49.75
WidebandNO
PackageSmall Outline Packages

Compliance & Regulatory

RoHS StatusCompliant
Lead-FreeYes (Pb-Free)
Moisture Sensitivity LevelMSL 1
ECCNEAR99
HTS Code8542.33.00.01

Where can I find the LT1999IMS8-50#TRPBF datasheet?

LT1999IMS8-50#TRPBF Datasheet Download

Official datasheet from Analog Devices

What are equivalent replacements for LT1999IMS8-50#TRPBF?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

Why does the LT1999IMS8-50#TRPBF's 120dB CMRR matter specifically for automotive high-side current sensing?

In automotive high-side current sensing the amplifier input common-mode voltage can swing from ground to the battery rail at 12V to 48V while the shunt signal is only a few millivolts; the LT1999IMS8-50#TRPBF's 120dB typical CMRR attenuates common-mode interference by a factor of one million, ensuring the 50V/V gain amplifies only the differential shunt signal and not rail noise.

What does the fixed 50V/V gain of the LT1999IMS8-50#TRPBF mean for shunt resistor selection in a 10A current monitoring circuit?

With a fixed gain of 50V/V, a 1mΩ shunt resistor at 10A produces 10mV across the shunt, and the LT1999IMS8-50#TRPBF amplifies that to 500mV at the output — a signal level directly compatible with most 12-bit ADC input ranges without additional gain stages, simplifying the 5.5V-supply current measurement signal chain to just the shunt and the IC.

Can the LT1999IMS8-50#TRPBF be used for low-side current sensing in a motor controller, and what are the key constraints?

Yes, the LT1999IMS8-50#TRPBF supports low-side current sensing where the shunt is placed between the motor return path and ground; in this configuration the common-mode voltage is near 0V, the 120dB CMRR ensures ground-bounce rejection, and the 5.5V supply allows the output to swing cleanly to represent motor currents up to the shunt-defined full-scale within the amplifier's 50V/V gain range.

How does the 8-pin MSOP package of the LT1999IMS8-50#TRPBF fit into an automotive ECU design where PCB space is a premium?

The 8-pin MSOP package of the LT1999IMS8-50#TRPBF measures approximately 3mm x 3mm, which is significantly smaller than an SOIC-8 at 5mm x 4mm, and its tape-and-reel format suits automated assembly in automotive ECU production runs where per-board area and pick-and-place cycle time are critical cost drivers.

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About Analog Devices

Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.

View all Analog Devices parts →
AvailabilityIn Stock
Reference Price (USD)
From $2.9900
Buy from 1pc · Factory-direct pricing
Qty.Unit PriceExt. Price
1+$4.1700$4.17
19+$3.9600$75.24
1000+$2.9900$2990.00
pcs
Unit price: $4.1700 · Total: $4.17

In Stock · 24h Response · Worldwide Shipping

Direct Contact
WhatsApp InquiryEmail RFQ
Lead Time3-7 business days
MOQFrom 1 piece
ShippingDHL / FedEx / UPS
OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

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RP
Rajesh Patel
Procurement Manager, VoltEdge Energy, India

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