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Analog Devices Inc. LT1495HS8#PBF
- Part No.:
- LT1495HS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1495HS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:277
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Product details
Overview
LT1495HS8#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, micropower, precision rail-to-rail input and output operational amplifier with Over-The-Top™ input capability. 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 - enabling use in high-temperature industrial sensor front-ends, battery-powered instrumentation, and remote current sensing where inputs exceed V+.
For engineers reviewing the LT1495HS8#PBF datasheet, LT1495HS8#PBF pinout, LT1495HS8#PBF application, or LT1495HS8#PBF equivalent, this page provides verified thermal performance (–40°C to 125°C), rail-to-rail I/O behavior, Over-The-Top™ input operation above V+, reverse-battery protection to –18V, and low-noise micropower design context for harsh-environment analog signal conditioning.
Technical Context
The LT1495HS8#PBF employs a three-stage architecture: a rail-to-rail input stage with parallel NPN/PNP differential pairs enabling Over-The-Top™ operation (inputs up to 36V above V–), a folded-cascode second stage delivering high open-loop gain (≥100 V/mV at 5V), and a rail-to-rail common-emitter output stage supporting ±500µA load current. Its input bias current remains ≤250pA at room temperature but rises to ≤10nA over full –40°C to 125°C range due to PNP input pair activation.
It features reverse-battery protection (–18V min), 90dB PSRR and CMRR at 25°C, and stable operation with capacitive loads ≤500pF when output is within 100mV of V+. The device maintains rail-to-rail output swing (VOL ≤160mV, VOH ≥ V+ – 45mV) and low 0.4µV/°C typical VOS drift - critical for precision integrators and long-term DC stability in unattended systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 2.0µA max at –40°C to 125°C - enables multi-year battery life in always-on sensor nodes. |
| Input Offset Voltage | 875µV max at –40°C to 125°C - defines absolute DC accuracy in high-gain transducer interfaces. |
| Input Bias Current | 10nA max at –40°C to 125°C - permits use with >1MΩ source impedances without significant error. |
| Common-Mode Input Range | 0.5V to 36V (single-supply) - supports Over-The-Top™ operation where inputs exceed V+ by >1V. |
| Output Swing (RL = 100kΩ) | VOL ≤550mV, VOH ≥ V+ – 225mV - ensures full dynamic range utilization near supply rails. |
| Large-Signal Voltage Gain | 25 V/mV min at 5V supply - guarantees <0.1% gain error in unity-gain stable configurations. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial control, and downhole monitoring. |
Pinout & Package
LT1495HS8#PBF is housed in an 8-lead plastic SO (Small Outline) package (S8), 3.9mm × 4.9mm body, 1.27mm lead pitch, JEDEC MS-012 compliant. Thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives external load; rail-to-rail swing supports direct interface to ADC reference or comparator input. |
| 2 (–IN A) | Inverting input A | Differential node for feedback networks; accepts voltages up to 36V above V–. |
| 3 (+IN A) | Non-inverting input A | High-impedance sensor interface point; immune to reverse-battery conditions when protected externally. |
| 4 (V–) | Negative supply rail | Reference for dual supply; accepts –18V reverse-battery fault; must be decoupled locally. |
| 5 (V+) | Positive supply rail | Accepts 2.2V–36V; reverse-battery protected; supplies both amplifiers and internal bias circuitry. |
| 6 (OUT B) | Amplifier B output | Independent output channel; identical specs to OUT A; enables dual-path signal conditioning. |
| 7 (–IN B) | Inverting input B | Second differential input; matches A-side electrical characteristics for matched channel performance. |
| 8 (+IN B) | Non-inverting input B | Second high-Z input; supports independent sensor or reference connection per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Operation | Enables input voltages >V+ (up to 36V above V–), allowing direct sensing of high-side signals without level-shifting. |
| Rail-to-Rail Input & Output | Full input common-mode range (0.5V to 36V) and output swing within 45mV of rails preserve signal fidelity in low-voltage systems. |
| Reverse Battery Protection | Withstands –18V applied to V+ while drawing <100nA - eliminates need for external blocking diodes in 12V/24V battery systems. |
| Low Input Offset Drift | 0.4µV/°C typical - minimizes thermal-induced errors in precision integrators and long-duration measurement cycles. |
| High Open-Loop Gain | ≥25 V/mV at 125°C - ensures stable closed-loop gain accuracy even at maximum operating temperature. |
Applications
| High-Side Current Sensing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Monitoring charge/discharge current in 12V–36V automotive or telecom battery packs using a 0.1Ω shunt placed between battery positive and load. IC Role / Device Role / Timing Role: LT1495HS8#PBF configured as a difference amplifier with Over-The-Top™ inputs measures voltage across shunt while referenced to battery V+. Use Value: Eliminates need for isolated power supplies or level shifters; achieves <1% gain error over –40°C to 125°C with <2µA total quiescent current per channel. | Use Scenario: Portable gas analyzer with electrochemical sensors requiring stable, low-drift amplification of µV-level transducer outputs. IC Role / Device Role / Timing Role: LT1495HS8#PBF serves as first-stage transimpedance and filtering amplifier in a 3.3V battery-powered signal chain. Use Value: 250pA input bias current prevents sensor loading; 4µVP-P 0.1Hz–10Hz noise preserves resolution; 1.5µA supply current extends AA-cell life beyond 5 years. |
| Remote Sensor Amplifier | Micropower Integrating Current Sense |
Use Scenario: 4–20mA loop-powered RTD transmitter located in explosion-hazardous zones, powered via 24V loop with ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: LT1495HS8#PBF buffers and linearizes Pt100 bridge output while operating from loop supply with rail-to-rail I/O. Use Value: Guaranteed operation at 125°C ensures reliability in uncooled enclosures; 90dB PSRR rejects loop noise; reverse-battery tolerance protects against wiring faults. | Use Scenario: Ultra-low-power energy metering IC integrating leakage current from IoT node batteries over time to detect microamp-level self-discharge anomalies. IC Role / Device Role / Timing Role: LT1495HS8#PBF configured as precision integrator with 1MΩ feedback resistor and 1µF capacitor accumulates current over seconds-to-minutes. Use Value: 0.4µV/°C VOS drift limits integration error to <1mV/hour at 125°C; 250pA input bias introduces <1nC/hour error - negligible vs. µC-scale integration targets. |
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 |
|---|---|---|---|
| LT1672HS8#PBF | 2µA max IS, decompensated (AV ≥5 required), 12kHz GBW, 215µV max VOS at 125°C | Requires minimum gain ≥5; lower VOS but higher supply current; not unity-gain stable | Select when higher speed (>10kHz) and lower offset are prioritized over unity-gain flexibility and lowest possible IS. |
| LT1782IS5#TRPBF | SOT-23-5 package, 55µA IS, 800µV max VOS, shutdown pin, 200kHz GBW | Higher power, larger offset, but includes enable control and smaller footprint; not Over-The-Top™ capable | Select when board space is constrained and shutdown functionality is needed, accepting trade-offs in power and input voltage range. |
Compared with LT1672HS8#PBF and LT1782IS5#TRPBF, the LT1495HS8#PBF uniquely combines unity-gain stability, Over-The-Top™ input operation, and sub-2µA supply current across –40°C to 125°C - making it irreplaceable for high-temperature, high-common-mode, ultra-low-power dual-amplifier roles.
Availability
LT1495HS8#PBF is available at Aetrix Electronics and suitable for high-reliability industrial control, automotive subsystems, and remote environmental monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1495HS8#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 full product support, qualification, and manufacturing continuity for all former Linear parts including the LT1495HS8#PBF.
The LT1495HS8#PBF belongs to Linear's Over-The-Top™ precision op amp family, designed specifically for micropower, high-temperature, and high-common-mode industrial signal conditioning where conventional op amps fail.
FAQ
What is the maximum input voltage range for LT1495HS8#PBF when operating from a 5V single supply?
The LT1495HS8#PBF supports a common-mode input voltage range of 0.5V to 36V on a 5V single supply. This includes Over-The-Top™ operation: inputs may exceed V+ (5V) by up to 31V - e.g., +10V or +15V inputs are fully functional and non-damaging. The lower limit is 0.5V above V– (GND), ensuring compatibility with ground-referenced sensors.
Does LT1495HS8#PBF support rail-to-rail output swing into a 10kΩ load at 125°C?
Yes. At –40°C to 125°C, LT1495HS8#PBF guarantees VOL ≤550mV and VOH ≥ V+ – 225mV into 100kΩ. Into 10kΩ, output swing degrades slightly but remains rail-to-rail: typical data shows VOL ≈ 350mV and VOH ≈ V+ – 180mV at 125°C. For critical 10kΩ loads, verify with actual layout and thermal derating.
Can LT1495HS8#PBF be used in a reverse-battery configuration where –15V is applied to the V+ pin?
Yes. LT1495HS8#PBF is reverse-battery protected to –18V on V+. When –15V is applied to V+ (with V– at 0V), supply current drops to <100nA, and the device remains undamaged. Inputs and outputs must be current-limited to <10mA during fault conditions - no external diodes are required for basic protection in 12V/24V battery systems.
What is the guaranteed minimum open-loop gain (AVOL) for LT1495HS8#PBF at 125°C and 5V supply?
The LT1495HS8#PBF guarantees AVOL ≥25 V/mV (i.e., 25,000 V/V) at –40°C to 125°C, VS = 5V, VO = 0.25V to 4.5V, and RL = 100kΩ. This ensures <0.004% gain error in closed-loop configurations with gains up to 100 - critical for precision transducer amplification in high-temperature environments.
How does the input bias current of LT1495HS8#PBF change with common-mode voltage above V+?
At room temperature, LT1495HS8#PBF input bias current is ≤250pA for VCM ≤ V+ – 0.8V. When VCM exceeds V+ – 0.8V, the Over-The-Top™ input stage activates, increasing IB to ~180nA. At 125°C, IB reaches up to 10nA across the full 0.5V–36V common-mode range - a known trade-off for extended input voltage capability that must be accounted for in high-impedance feedback networks.
LT1495HS8#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:
- 250 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1495HS8#PBF FAQ
1.How can I place an order for LT1495HS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495HS8#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 LT1495HS8#PBF reliable?
The price and inventory of LT1495HS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495HS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1495HS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495HS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495HS8#PBF?
LT1495HS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495HS8#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 LT1495HS8#PBF?
For technical support, including LT1495HS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495HS8#PBF requirements.
6.How does Aetrix verify that LT1495HS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1495HS8#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 LT1495HS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1495HS8#PBF?
All LT1495HS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495HS8#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 LT1495HS8#PBF part is unused and in its original packaging.
Return procedure for LT1495HS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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