LT1999CS8-50#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT1999CS8-50#PBF is a high-voltage bidirectional current sense amplifier from Analog Devices in an 8-pin SOIC package. It features 120 dB common-mode rejection ratio and 1500 µV maximum input offset voltage for precise current measurement. Available from stock with worldwide shipping for industrial and power management applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1999CS8-50#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.6800(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1999CS8-50#PBF?
- 120 dB common-mode rejection ratio enables accurate current sensing on high-voltage rails
- Bidirectional current measurement supports both positive and negative current flow detection
- Current-feedback architecture with frequency compensation for stable high-speed operation
- 8-pin SOIC package fits compact PCB layouts in motor drive and power management systems
What is LT1999CS8-50#PBF used for?
The LT1999CS8-50#PBF is designed for high-side and low-side current sensing in motor drives, power converters, and battery management systems operating on high-voltage rails. Its bidirectional sensing capability and 120 dB CMRR make it ideal for precision power monitoring in solar inverters and industrial power supplies. The device is also used in overcurrent protection circuits and energy metering applications requiring accurate bidirectional current measurement.
What are the specifications of LT1999CS8-50#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1610 (S8) |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CURRENT-FEEDBACK |
| Average Bias Current-Max (IIB) | 1500 µA |
| Common-mode Reject Ratio-Nom | 120dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 1500 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 3V/us |
| Supply Current-Max | 1.9mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Gain-Min | 49.75 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Where can I find the LT1999CS8-50#PBF datasheet?
LT1999CS8-50#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1999CS8-50#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What common-mode rejection ratio does LT1999CS8-50#PBF achieve, and why does that matter for high-voltage sensing?
The LT1999CS8-50#PBF achieves a 120 dB common-mode rejection ratio, which means it can accurately measure small sense voltages on top of large bus voltages without significant error. This is critical in 48 V or higher-voltage power systems where even a 1% CMRR error would translate to hundreds of millivolts of measurement offset.
Can LT1999CS8-50#PBF measure current in both directions, and what use cases does that enable?
Yes, LT1999CS8-50#PBF is a bidirectional current sense amplifier, capable of measuring both positive and negative current flow. This makes it essential for bidirectional DC-DC converters, regenerative motor drives, and battery systems where charge and discharge currents must both be monitored with 120 dB CMRR accuracy.
What is the maximum input offset voltage of LT1999CS8-50#PBF, and how does it affect measurement accuracy?
The LT1999CS8-50#PBF has a maximum input offset voltage of 1500 µV. When sensing across a 10 mΩ shunt resistor at 1 A load (10 mV drop), the 1.5 mV offset represents a 15% error, so designers should use lower-value sense resistors or higher currents to keep offset error below 1% in precision power monitoring applications.
Which package does LT1999CS8-50#PBF use, and how does it fit into a compact motor-control PCB layout?
The LT1999CS8-50#PBF comes in an 8-pin SOIC package (approximately 5 mm x 4 mm footprint), which is compact enough to place close to the current sense resistor on a motor-control PCB. Minimizing trace length between shunt and amplifier inputs reduces parasitic inductance and improves sensing accuracy at switching frequencies above 100 kHz.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Analog Devices
LT3062EDCB#TRPBF
Small Outline No-lead
Integrated Circuit
LT3062EDCB#TRMPBF
Small Outline No-lead
Integrated Circuit
LT8641IUDC#TRPBF
Other
Integrated Circuit
HMC412AMS8GTR
Small Outline Packages
Integrated Circuit
LT3062HMS8E#PBF
Small Outline Packages
Integrated Circuit
LT3062IMS8E#PBF
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $3.5500 | $67.45 |
| 100+ | $3.4301 | $343.01 |
| 500+ | $2.9125 | $1456.25 |
| 1000+ | $2.6800 | $2680.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit