LT1999IMS8-10F#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT1999IMS8-10F#PBF is a high-voltage bidirectional current-sense amplifier with 10x gain, 105 dB CMRR, and engineered for pin FMEA fault tolerance in demanding industrial and automotive systems. It operates with up to 2350 µA bias current and delivers precise current measurement across a wide common-mode range. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1999IMS8-10F#PBF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High-voltage bidirectional current sensing with 10x fixed gain for direct output scaling
- 105 dB common-mode rejection ratio ensures accurate measurements in noisy environments
- Pin FMEA engineering provides fault-mode immunity for safety-critical system designs
- MSOP-8 package with current-feedback architecture for stable high-side current sensing
Applications
The LT1999IMS8-10F#PBF is designed for high-side current sensing in industrial motor drives, power supplies, and battery management systems requiring accurate bidirectional current measurement over a wide common-mode voltage range. Its engineered Pin FMEA fault tolerance makes it appropriate for automotive and safety-critical applications where a single-pin failure must not cause system-level hazards. The device is also used in telecom power systems and server power monitoring where 105 dB CMRR ensures reliable measurement alongside high common-mode noise.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CURRENT-FEEDBACK |
| Average Bias Current-Max (IIB) | 2350 µA |
| Common-mode Reject Ratio-Nom | 105dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 1500 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| 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 | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Voltage Gain-Min | 9.95 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What fixed gain does the LT1999IMS8-10F#PBF provide, and how does this affect output voltage scaling in current monitoring?
The LT1999IMS8-10F#PBF provides a fixed 10x gain, so a 100 mV shunt resistor drop produces a 1 V output, simplifying current monitoring system design without external gain-setting resistors. This fixed-gain approach also reduces gain error and improves accuracy in applications where the sense resistor is sized to generate drops of 10 mV to 200 mV across a wide load current range.
How does the 105 dB CMRR of the LT1999IMS8-10F#PBF benefit motor drive current measurement designs?
With 105 dB common-mode rejection ratio, the LT1999IMS8-10F#PBF accurately measures current-sense signals as small as millivolts even when the common-mode voltage swings hundreds of volts due to PWM switching in motor drives. This high CMRR translates to less than 1 µV of error per volt of common-mode disturbance, enabling precise current control in 3-phase inverters and H-bridge drivers operating at switching frequencies of tens of kHz.
Why is Pin FMEA engineering in the LT1999IMS8-10F#PBF important for automotive and safety-critical applications?
Pin FMEA engineering means the LT1999IMS8-10F#PBF has been designed so that individual pin failures such as opens or shorts to supply do not cause dangerous system-level faults, a key requirement for AEC-Q100 automotive designs and IEC 61508 functional safety systems. This allows designers to meet ISO 26262 ASIL targets without external protection components, reducing BOM complexity in automotive battery management units operating across -40 °C to 125 °C.
In which package does the LT1999IMS8-10F#PBF ship, and how many pins does it occupy on the PCB?
The LT1999IMS8-10F#PBF is available in an MSOP-8 package with 8 pins, offering a compact footprint of approximately 3 mm × 3 mm that fits on power management boards alongside sense resistors and ADC input stages. The small package size supports high-density layouts in server power supplies, battery monitoring modules, and industrial drives where board space is limited.
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