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Analog Devices Inc. LT1495IS8#PBF
- Part No.:
- LT1495IS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1495IS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,290
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Product details
Overview
LT1495IS8#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail input and output operational amplifier optimized for micropower operation in harsh or battery-constrained environments. It delivers 1.5µA max supply current per amplifier, 375µV max input offset voltage, and operates across ±2.5V to ±15V or 2.2V to 36V single-supply rails - enabling use in remote sensor amplifiers, portable instrumentation, and solar-powered systems.
For engineers reviewing the LT1495IS8#PBF datasheet, LT1495IS8#PBF pinout, LT1495IS8#PBF application, or LT1495IS8#PBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, Over-The-Top™ input capability (inputs operate above V+), reverse battery protection to –18V, and rail-to-rail output swing within 35mV of rails at 100µA load.
Technical Context
The LT1495IS8#PBF employs a three-stage architecture: a rail-to-rail input stage with Over-The-Top™ topology using dual differential pairs (NPN/PNP) and Schottky clamping, a folded cascode second stage for high open-loop gain (≥100 V/mV), and a common-emitter rail-to-rail output stage. Input bias current remains ≤250 pA up to 10V common-mode voltage, rising to ~180 nA when inputs exceed V+.
Its low-noise design achieves 4 µVP-P (0.1–10 Hz) and 185 nV/√Hz at 100 Hz, while maintaining 90 dB PSRR and CMRR over 0.2–4 V common-mode range at 5V supply. Gain-bandwidth product is 2.7 kHz, with slew rate of 0.4–1.0 V/ms under ±5V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.5 µA max per amplifier - enables multi-year battery life in always-on sensor nodes. |
| Input Offset Voltage | 375 µV max at 25°C - ensures <0.1% error in 12-bit precision signal conditioning. |
| Input Bias Current | 250 pA max - supports megohm-level source impedances without significant DC error. |
| Common-Mode Range | –0.3 V to 36 V (single supply); extends ≥V+ - allows direct sensing of high-side voltages above supply rail. |
| Output Swing | VOH = V+ – 35 mV, VOL = 50 mV (no load) - delivers full dynamic range into ADCs or low-voltage logic. |
| Operating Temp | –40°C to +125°C - qualified for automotive engine control, industrial monitoring, and downhole equipment. |
| Reverse Battery Protection | Withstands –18 V - eliminates need for external blocking diodes in 12V/24V battery systems. |
Pinout & Package
LT1495IS8#PBF is housed in an 8-lead plastic SO (Small Outline) package (S8), 3.9 mm × 4.9 mm, 1.27 mm pitch, JEDEC MS-012 compliant. Thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives loads up to ±500 µA; rail-to-rail swing supports direct interface to SAR ADC references. |
| 2 (–IN A) | Inverting input A | High-impedance node; accepts signals up to V+ + 0.3 V due to Over-The-Top™ architecture. |
| 3 (+IN A) | Non-inverting input A | Matches –IN A in bias current and offset; enables precision differential sensing. |
| 4 (V–) | Negative supply rail | Reference for dual supply; also serves as ground reference in single-supply configurations. |
| 5 (V+) | Positive supply rail | Accepts 2.2–36 V; reverse-battery protected to –18 V on this pin. |
| 6 (OUT B) | Amplifier B output | Independent output; shares same rail-to-rail performance and micropower behavior as OUT A. |
| 7 (–IN B) | Inverting input B | Electrically isolated from –IN A; enables dual-channel signal processing without crosstalk. |
| 8 (+IN B) | Non-inverting input B | Matched to –IN B; supports independent gain/offset calibration per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Inputs | Inputs function reliably >V+, enabling high-side current sensing without level-shifting circuitry. |
| Rail-to-Rail Output | Swings within 35 mV of V+ and 50 mV of V– - maximizes usable signal range in low-voltage systems. |
| Ultra-Low Power | 1.5 µA per amplifier at 25°C - reduces thermal drift and extends battery life in IoT edge nodes. |
| High Precision DC | 375 µV VOS max, 0.4 µV/°C drift - maintains accuracy across automotive and industrial temperature ranges. |
| Robust ESD & Fault Tolerance | ±10 mA input current rating and –18 V reverse supply protection - simplifies front-end protection design. |
Applications
| Remote Sensor Amplifier | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying microvolt-level thermocouple or strain gauge outputs in unattended field deployments. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with zero-drift compensation and low input bias current. Use Value: Enables 16-bit resolution with <1 LSB error over –40°C to 125°C, eliminating need for periodic recalibration. | Use Scenario: Signal conditioning in handheld multimeters, gas detectors, or portable medical monitors. IC Role / Device Role / Timing Role: Dual-channel buffer and filter driver operating from coin-cell or Li-ion sources. Use Value: 1.5 µA quiescent current per channel extends battery life to >5 years in sleep mode; rail-to-rail I/O interfaces directly with 3.3 V ADCs. |
| Micropower Integrating Current Sense | Harsh-Environment Industrial Monitoring |
Use Scenario: Integrating leakage current in high-impedance circuits (e.g., insulation testing, photodiode biasing). IC Role / Device Role / Timing Role: Low-input-bias-current integrator with reset control and rail-to-rail output swing. Use Value: 250 pA max input bias ensures integration accuracy to <0.1% over 10-second windows; reverse-battery tolerance prevents damage during field wiring errors. | Use Scenario: Conditioner for RTD or thermistor signals in oil/gas wellhead controllers or motor drive feedback loops. IC Role / Device Role / Timing Role: High-CMRR, wide-temp-range front-end amplifier with Over-The-Top™ input for 4–20 mA loop compatibility. Use Value: Operates reliably at 125°C ambient; 90 dB CMRR rejects noise from variable-frequency drives; inputs tolerate transients >V+ during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1672CS8#PBF | 2 µA max supply current; decompensated (AV ≥ 5 only); 12 kHz GBW; no Over-The-Top™ input | Limited to fixed-gain ≥5 circuits; unsuitable for high-side sensing or unity-gain buffers | Select when higher speed is needed and input voltage stays within rails; not drop-in for LT1495IS8#PBF. |
| LT1782IS5#TRMPBF | SOT-23-5 package; 55 µA supply current; 800 µV VOS max; includes shutdown pin | Higher power, lower precision, smaller footprint; requires external enable control | Choose for space-constrained designs where 55 µA is acceptable and shutdown functionality is required. |
Compared with LT1495IS8#PBF, LT1672CS8#PBF trades Over-The-Top™ capability and rail-to-rail input for higher bandwidth at fixed gain, while LT1782IS5#TRMPBF sacrifices precision and micropower for ultra-small size and integrated shutdown - neither matches the unique combination of sub-2 µA operation, 375 µV VOS, and true Over-The-Top™ input in the LT1495IS8#PBF.
Availability
LT1495IS8#PBF is available at Aetrix Electronics and suitable for remote sensor amplifiers, battery-powered instrumentation, and harsh-environment industrial monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1495IS8#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains its legacy precision analog portfolio with full datasheet, reliability, and packaging continuity.
The LT1495IS8#PBF belongs to Linear's Over-The-Top™ micropower op amp family, designed specifically for ultra-low-power, high-precision signal conditioning in battery-operated and high-temperature industrial systems.
FAQ
What is the maximum operating temperature range for the LT1495IS8#PBF?
The LT1495IS8#PBF is specified and guaranteed over –40°C to +125°C (H-grade). This is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables, where "LT1495H" suffix denotes the 125°C qualification. The device maintains 375 µV max input offset and 1.5 µA max supply current across this full range.
Does the LT1495IS8#PBF support rail-to-rail input beyond the positive supply rail?
Yes - the LT1495IS8#PBF features Over-The-Top™ input architecture, explicitly allowing inputs to operate up to at least V+ + 0.3 V. This is documented in the Features list ("Over-The-Top™ Inputs Operate Above V+") and verified in the Typical Performance Characteristics (Input Bias Current vs Common Mode Voltage), where current remains low even at V+ + 0.2 V.
What is the typical input bias current of the LT1495IS8#PBF at room temperature?
The LT1495IS8#PBF has a typical input bias current of 250 pA at 25°C, with a maximum of 1000 pA under all conditions. This value is specified in the Electrical Characteristics table under "IB Input Bias Current" at VS = 5V, and is critical for preserving accuracy with high-impedance sensors like pH electrodes or photodiodes.
Can the LT1495IS8#PBF be used with a single 3.3 V supply?
Yes - the LT1495IS8#PBF supports single-supply operation from 2.2 V to 36 V. At 3.3 V, it delivers rail-to-rail input (–0.3 V to 3.3 V) and output (within 35 mV of rails), with 375 µV max VOS and 1.5 µA max IS. These parameters are validated in the Electrical Characteristics tables for VS = 3V conditions.
Is the LT1495IS8#PBF pin-compatible with other dual op amps in SO-8 packages?
No - the LT1495IS8#PBF uses the industry-standard dual op amp pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B), matching LM358, TL072, and AD8602. However, functional compatibility requires verification of supply range, input/output swing, and bias current requirements; it is not a generic drop-in replacement for higher-power or non-rail-to-rail devices.
LT1495IS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.001V/µs
- Gain Bandwidth Product:
- 2.7 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1µA (x2 Channels)
- Current - Output / Channel:
- 1.5 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1495IS8#PBF FAQ
1.How can I place an order for LT1495IS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495IS8#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1495IS8#PBF reliable?
The price and inventory of LT1495IS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495IS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1495IS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495IS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495IS8#PBF?
LT1495IS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495IS8#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1495IS8#PBF?
For technical support, including LT1495IS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495IS8#PBF requirements.
6.How does Aetrix verify that LT1495IS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1495IS8#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1495IS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1495IS8#PBF?
All LT1495IS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495IS8#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1495IS8#PBF part is unused and in its original packaging.
Return procedure for LT1495IS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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