LT1997HMS-2#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT1997HMS-2#PBF is a precision difference amplifier with 118 dB typical CMRR, 5 µA maximum bias current, and wide voltage range operation in a compact MSOP-8 package. Designed for high-accuracy differential signal measurements in instrumentation and industrial applications. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- LT1997HMS-2#PBF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 118 dB typical CMRR with 101 dB minimum, providing exceptional common-mode noise rejection for differential signal acquisition in high-interference environments
- Wide supply voltage range difference amplifier with only 5 µA max bias current at 25 °C for minimal loading of high-impedance sources
- Precision fixed-gain difference amplifier topology eliminates external resistor matching, ensuring consistent gain accuracy across production in measurement systems
Applications
The LT1997HMS-2#PBF is designed for precision differential measurements in industrial current sensing, bridge transducer conditioning, and high-voltage motor phase-current monitoring where outstanding CMRR is essential to reject large common-mode swings. Its wide voltage range accommodates high-side current sensing on rails from low-voltage logic through high-voltage power-bus applications. The compact MSOP-8 package and internal precision resistor network reduce BOM complexity in test and measurement instruments demanding long-term gain stability.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1847 |
| Date Of Intro | 2018-06-19 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Average Bias Current-Max (IIB) | 0.015 µA |
| Bias Current-Max (IIB) @25C | 0.005 µA |
| Common-mode Reject Ratio-Min | 101dB |
| Common-mode Reject Ratio-Nom | 118dB |
| Frequency Compensation | NO |
| Input Offset Voltage-Max | 200 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -30 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | YES |
| Slew Rate-Min | 0.45V/us |
| Slew Rate-Nom | 0.75V/us |
| Supply Current-Max | 0.004mA |
| Supply Voltage Limit-Max | 30V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What CMRR does the LT1997HMS-2#PBF achieve, and why does that matter for high-side current sensing?
The LT1997HMS-2#PBF delivers a typical CMRR of 118 dB with a guaranteed minimum of 101 dB, meaning common-mode voltages are attenuated by at least 100,000:1 relative to the differential signal. In high-side current-sense circuits where the common-mode voltage can swing over tens of volts, this level of CMRR prevents common-mode interference from corrupting the millivolt-level differential signal across a shunt resistor.
What is the maximum input bias current of the LT1997HMS-2#PBF, and how does it influence shunt resistor selection?
The LT1997HMS-2#PBF has a maximum input bias current of 5 µA at 25 °C and up to 15 µA over temperature, which creates a small voltage error when multiplied by the shunt resistance. For a 10 mΩ shunt, the 15 µA maximum bias current produces a 0.15 µV offset error — negligible in most designs — but for larger impedance sense elements the bias error must be budgeted carefully.
Does the LT1997HMS-2#PBF require external frequency compensation, and what does that mean for board design?
No, the LT1997HMS-2#PBF does not require external frequency compensation components, simplifying board design by eliminating the compensation capacitors and resistors that externally compensated op-amps need. This reduces part count and board area while ensuring stable closed-loop behavior across the specified operating conditions without layout-dependent tuning.
Which package does the LT1997HMS-2#PBF use, and is it RoHS-compliant?
The LT1997HMS-2#PBF uses an MSOP-8 package (Analog Devices code 05-08-1847) measuring approximately 3 mm × 5 mm, suitable for compact PCB layouts in instrumentation and power-monitoring modules. The Pb-free code for this specific variant is listed as No, meaning this ordering part number is not a RoHS-compliant lead-free version; designers requiring RoHS compliance should select the equivalent #TRPBF lead-free variant.
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