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Home Products Integrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps~~LT1490AHS8#TRPBF~~

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LT1490AHS8#TRPBF - Analog Devices Inc.

Name: Analog Devices Inc. LT1490AHS8#TRPBF
Brand: Analog Devices Inc.
SKU: LT1490AHS8#TRPBF
Availability: InStock
Rating: 5 (5 reviews)

Manufacturer Part Number: LT1490AHS8#TRPBF

Manufacturer: Analog Devices, Inc.

Allelco Part Number: 32D-LT1490AHS8#TRPBF

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 9,930 pcs available, New & Original

Parts Description: IC OPAMP GP 2 CIRCUIT 8SO

Package: 8-SO

Data sheet: LT1490AHS8#TRPB.pdf

Datasheets
LT1490A, LT491A Datasheet.pdf

Other Related Documents
Tape and Reel Packaging.pdf

PCN Design/Specification
Mult Dev 12/Oct/2022.pdf Mult Dev Mark Chg 5/Jul/2021.pdf

RoHs Status: ROHS3 Compliant

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In stock: 9930

Specifications

LT1490AHS8#TRPBF Tech Specifications
Analog Devices Inc. - LT1490AHS8#TRPBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LT1490AHS8#TRPBF

Product Attribute	Attribute Value
Manufacturer	Analog Devices, Inc.
Voltage - Supply Span (Min)	2 V
Voltage - Supply Span (Max)	44 V
Voltage - Input Offset	250 µV
Supplier Device Package	8-SO
Slew Rate	0.06V/µs
Series	LT®
Package / Case	8-SOIC (0.154", 3.90mm Width)
Package	Tape & Reel (TR)
Output Type	Rail-to-Rail

Product Attribute	Attribute Value
Operating Temperature	-40°C ~ 85°C
Number of Circuits	2
Mounting Type	Surface Mount
Gain Bandwidth Product	200 kHz
Current - Supply	50µA (x2 Channels)
Current - Output / Channel	25 mA
Current - Input Bias	1 nA
Base Product Number	LT1490
Amplifier Type	General Purpose

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Parts Introduction

LT1490AHS8#TRPBF (1)

Manufacturer Part Number

LT1490AHS8#TRPBF

Manufacturer

Analog Devices, Inc.

Introduction

High-Speed, Precision Operational Amplifier

Product Features and Performance

Dual-channel operational amplifier

Rail-to-rail output

High gain bandwidth of 200 kHz

Low input offset voltage of 250 μV

Extremely low input bias current of 1 nA

Slew rate of 0.06 V/μs

Wide supply voltage range of 2 V to 44 V

Low power consumption of 50 μA per channel

Product Advantages

Excellent precision and high-speed performance

Suitable for a wide range of applications

Low power consumption for energy-efficient designs

Robust and reliable operation over a wide temperature range

Key Technical Parameters

Package: 8-SOIC (0.154", 3.90mm Width)

Mounting Type: Surface Mount

Operating Temperature: -40°C to 85°C

Gain Bandwidth Product: 200 kHz

Voltage Supply Span: 2 V to 44 V

Current Supply: 50 μA per channel

Slew Rate: 0.06 V/μs

Voltage Input Offset: 250 μV

Amplifier Type: General Purpose

Current Output / Channel: 25 mA

Current Input Bias: 1 nA

Quality and Safety Features

RoHS3 compliant

Suitable for use in a wide range of applications

Compatibility

Compatible with various electronic circuits and systems

Application Areas

Instrumentation and control systems

Medical equipment

Industrial automation

Test and measurement equipment

Consumer electronics

Product Lifecycle

Currently in production

Replacements and upgrades may be available in the future

Several Key Reasons to Choose This Product

Excellent precision and high-speed performance

Wide operating temperature range and wide supply voltage range

Low power consumption for energy-efficient designs

Robust and reliable operation

Suitable for a wide range of applications

Frequently Asked Questions(FAQ)

How does the LT1490AHS8#TRPBF compare to single-channel general-purpose amplifiers in terms of power efficiency and channel count for space-constrained designs?: The LT1490AHS8#TRPBF integrates two independent amplifier channels within a single 8-SOIC package, offering a compact solution that reduces board real estate compared to discrete single-op-amp implementations. Each channel consumes only 50 µA of supply current at typical operating voltages, enabling low-power operation critical for battery-powered or thermally sensitive applications. This dual-channel integration maintains the same input bias current (1 nA) and input offset voltage (250 µV) per channel as the base LT1490 series, ensuring consistent performance across both sections without degradation due to packaging effects.

What are the implications of the LT1490AHS8#TRPBF’s rail-to-rail output swing when driving capacitive loads above 10 nF in precision sensor conditioning circuits?: With rail-to-rail output capability, the LT1490AHS8#TRPBF can deliver full-swing signals even near supply rails, which is advantageous in single-supply systems. However, driving large capacitive loads (>10 nF) introduces stability challenges due to the combination of low slew rate (0.06 V/µs) and limited output drive current (25 mA). In such configurations, phase margin degrades significantly, potentially leading to ringing or oscillation. Designers should consider adding series output resistors (typically 10–50 Ω) and minimizing feedback loop gain bandwidth to maintain stability, especially when using high-value feedback networks common in precision amplification stages.

Can the LT1490AHS8#TRPBF be safely used in high-impedance sensor interfaces requiring sub-microvolt input offset control over industrial temperature ranges?: While the LT1490AHS8#TRPBF features an input offset voltage of 250 µV—adequate for many general-purpose applications—it may not meet the stringent requirements of ultra-precision sensor interfaces where sub-100 µV offsets are needed. Over the full -40°C to 85°C operating range, input offset drift can accumulate beyond initial tolerance, affecting long-term accuracy. For true precision instrumentation, lower-drift variants such as the LTC2057 or dedicated instrumentation amplifiers would be more suitable. The LT1490AHS8#TRPBF remains appropriate only if system calibration, temperature profiling, or post-processing compensation can accommodate its offset characteristics.

How does the gain-bandwidth product of the LT1490AHS8#TRPBF influence filter design when implementing active RC filters with closed-loop gains greater than unity?: The LT1490AHS8#TRPBF provides a gain-bandwidth product (GBW) of 200 kHz, limiting usable bandwidth in non-inverting configurations with closed-loop gains exceeding unity. For example, a gain of 10 results in a maximum closed-loop bandwidth of approximately 20 kHz, derived from GBW / A_CL. This constrains its use in audio or wideband signal conditioning where higher bandwidth is required. In contrast, higher-speed op amps like the OP27 offer >1 MHz GBW, making them preferable for dynamic filtering applications. Designers must account for this trade-off between gain and frequency response when selecting the LT1490AHS8#TRPBF for active filter topologies such as Sallen-Key or Butterworth sections.

Is it feasible to cascade multiple LT1490AHS8#TRPBF stages without introducing significant distortion when amplifying low-level biomedical signals?: Cascading two LT1490AHS8#TRPBF stages is possible but introduces cumulative noise, offset, and nonlinearities. Each stage contributes approximately 250 µV of offset and adds thermal noise proportional to sqrt(4kTRB), with B determined by bandwidth. Given the modest open-loop gain (~100 dB) and low slew rate (0.06 V/µs), interstage buffering becomes critical to prevent loading and distortion. Moreover, the total harmonic distortion increases with each additional stage due to reduced phase margin and peaking in the frequency response. For clean amplification of weak biomedical signals, a single-stage design with optimized layout and shielding is generally superior unless gain distribution across buffered stages improves stability.

What considerations apply when replacing the LT1490AHS8#TRPBF with another dual-op-amp in a legacy PCB layout designed for 5 V operation?: When substituting the LT1490AHS8#TRPBF in a 5 V system, ensure replacement components share similar electrical characteristics: rail-to-rail inputs/outputs, comparable supply current (ideally <60 µA per channel), and sufficient output drive (≥20 mA). Alternatives like the MCP6022 or TLV2462 offer similar functionality but differ in GBW (e.g., MCP6022 has ~1 MHz vs. LT1490AHS8#TRPBF’s 200 kHz) and input bias current (MCP6022 at 1 pA). Mismatched slew rates or output impedance could affect transient response or load regulation. Additionally, verify pin compatibility—some dual amplifiers use SOIC-8 pinouts identical to LT1490AHS8#TRPBF, but thermal derating and package dimensions must align for reliable soldering and heat dissipation.

How does the LT1490AHS8#TRPBF perform in single-supply versus dual-supply configurations regarding common-mode rejection and output saturation?: In single-supply operation (e.g., 3 V to 5 V), the LT1490AHS8#TRPBF leverages its rail-to-rail input and output stages to accept signals across the entire supply range and drive down to near ground. This eliminates the need for negative supply rails in many sensing applications. However, common-mode rejection ratio (CMRR) may degrade slightly at very low supply voltages (<3 V) due to internal biasing limitations, though still exceeds 80 dB typ. Output saturation occurs within tens of millivolts of each rail, so signal swing must be carefully managed to avoid clipping. Dual-supply operation offers better headroom for large-signal swings but requires careful decoupling and grounding to preserve CMRR.

What role does the LT1490AHS8#TRPBF play in reducing component count when implementing differential-to-single-ended conversion with built-in filtering?: The LT1490AHS8#TRPBF enables compact differential-to-single-ended conversion when paired with passive resistors, eliminating the need for dedicated instrumentation amplifiers. By configuring one amplifier as a difference amplifier and the second as a buffer or gain stage, designers achieve signal conditioning with minimal external components. Its rail-to-rail outputs simplify level shifting into subsequent ADC stages. However, precision depends on resistor matching; use 0.1% tolerance resistors and avoid long traces to maintain CMRR. Compared to discrete solutions, this approach reduces BOM count and board area but trades off absolute accuracy for integration benefits—ideal for cost-sensitive, moderate-precision systems.

Are there any layout constraints specific to the LT1490AHS8#TRPBF that impact high-impedance source measurements?: Yes. High-impedance sources (<10 kΩ) coupled with the LT1490AHS8#TRPBF’s 1 nA input bias current require careful PCB layout to minimize leakage currents. Guard rings around high-resistance nodes, low-leakage dielectrics, and avoiding humid environments help prevent measurement errors. Additionally, the 8-SOIC package exhibits slight coupling between channels, which can induce crosstalk in sensitive analog front ends. Keep feedback resistors close to the amplifier pins (<5 mm), use star grounding, and isolate digital return currents from analog paths. Failure to adhere to these practices risks offset shifts exceeding datasheet specifications, particularly in humidity-prone applications.

How does the operating temperature range of the LT1490AHS8#TRPBF affect long-term stability in automotive or industrial monitoring systems?: The LT1490AHS8#TRPBF operates from -40°C to 85°C, meeting standard industrial requirements but falling short of AEC-Q100 Grade 1 (up to 125°C). Over extended periods within this range, input offset voltage drifts at ~1 µV/°C, meaning a 50°C rise could introduce 50 µV of error—significant in mV-range signals. Supply current also varies with temperature, impacting power budgets in energy-constrained deployments. For harsh environments, consider thermally stabilized references or periodic recalibration. If ambient temperatures exceed 85°C, derating or alternative components with broader ranges are necessary to maintain functional integrity.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LT1490AHS8#TRPBF

Product Attribute
Part Number	LT1490AHMS8#TRPBF	LT1490AIMS8#TRPBF	LT1490AHS8#PBF	LT1490AHMS8#PBF
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Current - Supply	-	-	-	-
Slew Rate	-	-	-	-
Number of Circuits	-	-	-	-
Current - Input Bias	-	-	-	-
Voltage - Supply Span (Max)	-	-	-	-
Output Type	-	Current - Unbuffered	Voltage - Buffered	-
Series	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Amplifier Type	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Voltage - Supply Span (Min)	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Gain Bandwidth Product	-	-	-	-
Current - Output / Channel	-	-	-	-
Voltage - Input Offset	-	-	-	-

LT1490AHS8#TRPBF Datasheet PDF

Download LT1490AHS8#TRPBF pdf datasheets and Analog Devices Inc. documentation for LT1490AHS8#TRPBF - Analog Devices Inc..

Datasheets: LT1490A, LT491A Datasheet.pdf
Other Related Documents: Tape and Reel Packaging.pdf
PCN Design/Specification: Mult Dev 12/Oct/2022.pdf Mult Dev Mark Chg 5/Jul/2021.pdf

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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