LT1991AIMS#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT1991AIMS#PBF is a precision gain-selectable operational amplifier with 100 dB CMRR and a maximum bias current of 7.5 nA, packaged in an SOIC-8 form factor. It supports programmable gain configurations and is ideal for precision data acquisition, instrumentation amplifier, and signal conditioning applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT1991AIMS#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.4200(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 LT1991AIMS#PBF?
- Gain-selectable precision op-amp architecture with 100 dB nominal CMRR for accurate differential signal measurement
- Ultra-low bias current maximum of 7.5 nA minimizing input loading errors in high-impedance sensor circuits
- Minimum common-mode rejection ratio of 80 dB ensures excellent noise rejection in industrial measurement systems
- Voltage-feedback architecture with frequency compensation for stable operation across a wide range of closed-loop gains
What is LT1991AIMS#PBF used for?
The LT1991AIMS#PBF is designed for precision analog front ends in data acquisition systems, industrial sensors, and medical instrumentation where programmable gain and low offset errors are required. Its 100 dB CMRR and 7.5 nA bias current make it well-suited for bridge amplifier circuits, thermocouple amplifiers, and strain gauge signal conditioning operating from ±5 V or single 5 V supplies. The SOIC-8 package simplifies board layout in compact precision analog designs.
What are the specifications of LT1991AIMS#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1661 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0075 µA |
| Bias Current-Max (IIB) @25C | 0.005 µA |
| Common-mode Reject Ratio-Min | 80dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 160 µV |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -20 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| 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 | YES |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 0.08V/us |
| Slew Rate-Nom | 0.12V/us |
| Supply Current-Max | 0.021mA |
| Supply Voltage Limit-Max | 20V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 560 |
| Wideband | YES |
| ## LT1991AIMS#PBF Alternates Showing results | Image |
| 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 LT1991AIMS#PBF datasheet?
LT1991AIMS#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1991AIMS#PBF?
Compatible alternatives and drop-in replacements for LT1991AIMS#PBF:
suggested
suggested
Frequently Asked Questions
What CMRR performance does LT1991AIMS#PBF deliver for differential signal amplification?
The LT1991AIMS#PBF achieves a nominal common-mode rejection ratio of 100 dB, with a guaranteed minimum of 80 dB, enabling precise differential measurements in noisy environments such as industrial sensor conditioning and bridge amplifier circuits operating from ±5 V to ±15 V supplies.
How does the selectable gain feature of LT1991AIMS#PBF simplify instrumentation amplifier design?
The LT1991AIMS#PBF allows gain to be configured via external resistors or internal resistor networks, supporting gains from 1 V/V to 100 V/V, reducing external component count and enabling calibration-friendly designs for precision data acquisition systems, temperature measurement, and medical monitoring equipment.
What makes LT1991AIMS#PBF suitable for high-impedance sensor interfaces?
With a maximum input bias current of only 7.5 nA at 25°C, the LT1991AIMS#PBF introduces minimal loading on high-impedance sources such as pH probes, piezoelectric sensors, and photodiodes, preserving signal accuracy in precision measurement applications where sub-10 nA input currents are required.
How does LT1991AIMS#PBF compare to fixed-gain instrumentation amplifiers for flexible system designs?
Unlike fixed-gain INA amplifiers, the LT1991AIMS#PBF offers selectable gain configurations up to 100 V/V with 100 dB CMRR, giving designers flexibility to adapt the same PCB footprint across multiple product variants or reconfigure gain digitally, reducing BOM complexity while maintaining precision performance.
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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.
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|---|---|---|
| 1+ | $6.8400 | $6.84 |
| 2+ | $6.0000 | $12.00 |
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