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Analog Devices Inc. LT1495IN8#PBF
- Part No.:
- LT1495IN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1495IN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:105
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Product details
Overview
LT1495IN8#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 from 2.2V to 36V supply rails across –40°C to 125°C. It is used in high-accuracy, ultra-low-power sensor signal conditioning circuits where inputs may exceed the positive supply.
For engineers reviewing the LT1495IN8#PBF datasheet, LT1495IN8#PBF pinout, LT1495IN8#PBF application, or LT1495IN8#PBF equivalent, this page provides verified package mapping (8-pin PDIP), confirmed dual op amp functionality, rail-to-rail I/O behavior, reverse battery protection to –18V, and design-meaningful specs including 100V/mV open-loop gain driving 100kΩ loads.
Technical Context
The LT1495IN8#PBF implements a three-stage architecture: a rail-to-rail input stage with Over-The-Top™ operation (inputs functional up to V+ + 0.3V), a folded-cascode second stage for high voltage gain, and a rail-to-rail common-emitter output stage. Its input bias current remains ≤250pA at room temperature and ≤3.8nA over the full –40°C to 125°C range.
It achieves 90dB PSRR and CMRR at DC, maintains stable performance across 2.2V–36V supplies, and supports single-supply operation with input range extending to –0.3V. The device is characterized for guaranteed specifications over –40°C to 125°C (H-grade), with the "I" suffix in LT1495IN8 indicating industrial temperature grade - confirmed as –40°C to 125°C per datasheet Note 2 and Absolute Maximum Ratings table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 1.5µA max - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | 375µV max - ensures ≤0.0075% gain error in 5V-span instrumentation |
| Input Bias Current | 250pA max (25°C), 3.8nA max (–40°C to 125°C) - supports ≥10MΩ source impedances without significant error |
| Open-Loop Gain | 100V/mV min into 100kΩ - guarantees <0.01% closed-loop gain error at unity gain |
| Rail-to-Rail I/O | Input range: –0.3V to 36V; Output swing: within 35mV of rails (no load) - maximizes dynamic range in low-voltage systems |
| Over-The-Top™ Input | Inputs operate up to V+ + 0.3V - allows direct interfacing with sensors biased above V+ |
| Reverse Battery Protection | Withstands –18V applied to V– - eliminates need for external series diode in automotive/solar-battery systems |
Pinout & Package
LT1495IN8#PBF is housed in an 8-lead plastic DIP (N8) package with 0.300-inch body width and through-hole mounting. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Drives 500µA load; rail-to-rail swing supports full supply utilization |
| 2 - –IN A | Inverting input A | Part of differential pair; accepts voltages up to V+ + 0.3V (Over-The-Top™) |
| 3 - +IN A | Non-inverting input A | Part of differential pair; same Over-The-Top™ capability as Pin 2 |
| 4 - V– | Negative supply rail | Reference for both amplifiers; reverse-battery protected to –18V |
| 5 - V+ | Positive supply rail | Accepts 2.2V to 36V; powers both amplifiers and internal bias networks |
| 6 - OUT B | Amplifier B output | Independent output; identical specs and drive capability to Pin 1 |
| 7 - –IN B | Inverting input B | Matches Pin 2 functionality; fully isolated from Channel A |
| 8 - +IN B | Non-inverting input B | Matches Pin 3 functionality; no crosstalk with Channel A |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Operation | Enables sensor front-ends where transducer bias exceeds V+, eliminating level-shifting circuitry |
| 1.5µA Max Supply Current per Amp | Reduces quiescent power to 7.5µW at 5V - critical for energy-harvesting and coin-cell applications |
| Rail-to-Rail Input & Output | Preserves >99% of available signal swing in 3V systems - improves ADC utilization and SNR |
| 375µV Max Input Offset Voltage | Minimizes zero-point drift in precision current sensing and thermocouple amplification |
| –40°C to 125°C Guaranteed Operation | Validates use in under-hood automotive, industrial motor control, and downhole sensing environments |
| Reverse Battery Protection to –18V | Removes need for external blocking diode - reduces BOM count and forward-drop error in battery-powered systems |
Applications
| Remote Sensor Amplifier | Micropower Filter |
|---|---|
|
Use Scenario: Amplifying µV-level signals from RTDs or strain gauges in wireless sensor nodes powered by Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Dual-channel precision instrumentation amplifier with matched channels for differential sensing and reference buffering. Use Value: 250pA input bias current prevents error from 10MΩ bridge completion resistors; 1.5µA supply current extends 10-year battery life. |
Use Scenario: Implementing a 10Hz elliptic lowpass filter in portable gas analyzers requiring sub-ppm stability. IC Role / Device Role / Timing Role: Dual op amp configured as active filter stages (Sallen-Key and multiple-feedback topologies). Use Value: Rail-to-rail I/O preserves filter headroom at 3.3V supply; 0.4µV/°C typical VOS drift maintains cutoff accuracy over temperature. |
| Battery- or Solar-Powered Systems | Portable Instrumentation |
|
Use Scenario: High-side current sensing in solar charge controllers monitoring 0–20A battery currents with ±0.5% accuracy. IC Role / Device Role / Timing Role: Precision current-sense amplifier with Over-The-Top™ inputs referenced to battery positive rail. Use Value: Inputs operate up to V+ + 0.3V - enables direct connection to shunt placed on battery positive side without level shifters. |
Use Scenario: Front-end signal conditioning in handheld multimeters measuring µA-range currents with auto-zero calibration. IC Role / Device Role / Timing Role: Dual op amp used for integrator and reference buffer in integrating ADC architectures. Use Value: 4µVP-P 0.1Hz–10Hz noise enables 18-bit effective resolution; 100V/mV AVOL ensures integrator linearity <0.001%. |
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 |
|---|---|---|---|
| LT1672IS8#PBF | 2µA max supply current; decompensated (AV ≥ 5 only); 12kHz GBW vs LT1495's 2.7kHz | Requires minimum noise-gain ≥5; unsuitable for unity-gain buffers or integrators | Select when higher speed is needed and gain ≥5 is acceptable; not drop-in for LT1495IN8#PBF |
| LT1490ACS8#PBF | 50µA supply current; 950µV max VOS; wider 2.7V–36V supply range; –40°C to 85°C only | Higher power consumption negates battery-life advantage; lower precision limits sub-mV sensing | Choose only if cost sensitivity outweighs micropower and precision requirements; different temp grade |
Compared with LT1672IS8#PBF and LT1490ACS8#PBF, the LT1495IN8#PBF uniquely balances ultra-low 1.5µA supply current, 375µV offset, rail-to-rail I/O, and –40°C to 125°C operation - making it irreplaceable in long-life, high-accuracy, wide-temperature embedded sensing.
Availability
LT1495IN8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor nodes, and industrial current monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LT1495IN8#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, datasheets, and reliability data for the LT1495IN8#PBF under its precision analog portfolio.
The LT1495IN8#PBF belongs to Linear Technology's Over-The-Top™ precision op amp family, designed specifically for ultra-low-power, high-accuracy signal conditioning in harsh environments where supply rails are constrained and inputs may exceed V+.
FAQ
What is the operating temperature range guaranteed for LT1495IN8#PBF?
The LT1495IN8#PBF is specified and guaranteed over –40°C to 125°C. This is confirmed in the Absolute Maximum Ratings table and Note 2 of the datasheet, which explicitly states that LT1495H/LT1495I grades meet full performance specifications across this extended industrial temperature range. The "I" suffix denotes this high-temp grade.
Does LT1495IN8#PBF support true rail-to-rail input operation, and what does "Over-The-Top™" mean?
Yes, LT1495IN8#PBF supports rail-to-rail input operation from –0.3V to 36V. "Over-The-Top™" means its inputs remain functional even when driven up to ~0.3V above the positive supply rail (V+), enabling direct interface with sensors or signals biased above V+ without external level-shifting circuitry - a key feature confirmed in the Applications Information section.
What is the maximum load current LT1495IN8#PBF can source or sink while maintaining rail-to-rail output swing?
The LT1495IN8#PBF outputs can source and sink ≥500µA while maintaining rail-to-rail swing. Per Electrical Characteristics, VOH is V+ – 0.035V (no load) and V+ – 0.160V (100µA source), and VOL is 100mV (no load) and 410mV (100µA sink). Derating curves confirm stable operation up to 500µA, validated in Typical Performance Characteristics Figure G04/G05.
Is LT1495IN8#PBF pin-compatible with other packages in the LT1495 family, such as SO-8 or MSOP-8?
No - LT1495IN8#PBF uses the 8-lead PDIP (N8) package with standard dual op amp pinout, but it is not physically or thermally pin-compatible with SO-8 (S8) or MSOP-8 (MS8) variants. While electrical pin functions match (e.g., Pin 1 = OUT A), package dimensions, lead pitch, thermal resistance (θJA = 130°C/W for N8 vs 190°C/W for S8), and soldering profiles differ significantly.
How does LT1495IN8#PBF handle reverse battery conditions, and what protection is built-in?
The LT1495IN8#PBF includes integrated reverse battery protection rated to –18V on the V– pin. Under reverse polarity, supply current drops to <100nA (inputs grounded, outputs open), preventing damage and eliminating the need for external series diodes. This is explicitly documented in the Features list and Applications Information section.
LT1495IN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 180 nA
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1495IN8#PBF FAQ
1.How can I place an order for LT1495IN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495IN8#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 LT1495IN8#PBF reliable?
The price and inventory of LT1495IN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495IN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1495IN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495IN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495IN8#PBF?
LT1495IN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495IN8#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 LT1495IN8#PBF?
For technical support, including LT1495IN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495IN8#PBF requirements.
6.How does Aetrix verify that LT1495IN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1495IN8#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 LT1495IN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1495IN8#PBF?
All LT1495IN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495IN8#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 LT1495IN8#PBF part is unused and in its original packaging.
Return procedure for LT1495IN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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