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Analog Devices Inc. LT1495CN8#PBF
- Part No.:
- LT1495CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1495CN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:109
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Product details
Overview
LT1495CN8#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 85°C. It is used in battery-powered sensor front-ends where ultra-low quiescent current and input operation above V+ are critical.
For engineers reviewing the LT1495CN8#PBF datasheet, LT1495CN8#PBF pinout, LT1495CN8#PBF application, or LT1495CN8#PBF equivalent, key selection criteria include guaranteed rail-to-rail I/O swing at sub-2µA supply current, reverse-battery protection to –18V, and verified Over-The-Top input operation up to 36V common-mode range - essential for harsh-environment industrial sensing and portable instrumentation.
Technical Context
The LT1495CN8#PBF employs a three-stage architecture: a rail-to-rail input stage with parallel NPN/PNP differential pairs enabling Over-The-Top operation, a folded-cascode second stage for high open-loop gain (≥100 V/mV), and a rail-to-rail common-emitter output stage. Its input bias current remains ≤250 pA over –40°C to 85°C, and its low 0.4 µV/°C typical offset drift ensures stable DC performance in temperature-varying systems.
It achieves 90 dB PSRR and CMRR over 0.2V–4V common-mode range at 5V supply, and maintains stability with capacitive loads ≤100 pF when output is biased near V+. The device is characterized for 3V, 5V, and ±15V supplies, with guaranteed operation down to 2.2V minimum supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 1.5 µA max - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | 375 µV max at 25°C - supports accurate µV-level signal amplification without trimming |
| Input Bias Current | 250 pA max - permits use of >1 MΩ source impedances without significant error |
| Common-Mode Range | –0.3 V to 36 V - includes Over-The-Top operation above V+, critical for high-side sensing |
| Output Swing (RL = 100kΩ) | VOH ≥ V+ – 0.32 V, VOL ≤ 410 mV - true rail-to-rail output drive into moderate loads |
| Open-Loop Gain | 100 V/mV min - ensures <0.1% gain error in unity-gain buffer or low-gain configurations |
| Reverse Battery Protection | –18 V min - survives accidental reverse polarity connection without external protection |
Pinout & Package
LT1495CN8#PBF is housed in an 8-lead PDIP (N8) package with 0.300-inch body width, JEDEC MS-001 compliant, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A Output | Drives load directly; rail-to-rail swing supports full-supply utilization |
| 2 (–IN A) | Inverting Input A | Differential node for A channel; accepts signals up to 36 V regardless of V+ |
| 3 (+IN A) | Non-inverting Input A | Differential node for A channel; same Over-The-Top capability as Pin 2 |
| 4 (V–) | Negative Supply Rail | Reference for dual-supply operation; also ground reference in single-supply mode |
| 5 (V+) | Positive Supply Rail | Accepts 2.2 V to 36 V; input common-mode extends beyond this rail |
| 6 (OUT B) | Amplifier B Output | Independent output; identical specs and drive capability as Pin 1 |
| 7 (–IN B) | Inverting Input B | Differential node for B channel; fully isolated from A channel |
| 8 (+IN B) | Non-inverting Input B | Differential node for B channel; matches Pin 3 functionality |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input & Output | Enables full dynamic range utilization in low-voltage (e.g., 3V) and high-voltage (e.g., 36V) systems without level-shifting |
| Over-The-Top™ Input Stage | Allows inputs to operate up to 36 V even when V+ = 5 V - eliminates need for external attenuators in high-side current sensing |
| 1.5 µA Max Supply Current | Supports >10-year operation on a single CR2032 coin cell in duty-cycled sensor nodes |
| –40°C to 85°C Operating Range | Qualified for industrial ambient environments without derating or thermal management |
| Reverse Battery Protection | Withstands –18 V applied to V+ while drawing <100 nA - removes requirement for series diode or MOSFET protection |
Applications
| High-Side Current Sensing | Battery-Powered Sensor Front-End |
|---|---|
Use Scenario: Monitoring charge/discharge current in 12–36 V battery packs using a shunt resistor placed between battery positive and load. IC Role / Device Role / Timing Role: Precision amplifier configured as difference amplifier to reject common-mode voltage while amplifying mV-level shunt voltage. Use Value: Over-The-Top inputs tolerate common-mode voltages up to 36 V, eliminating need for costly isolation or level-shifting circuitry. | Use Scenario: Signal conditioning for thermistor, RTD, or bridge-based sensors in wireless IoT nodes powered by AA/AAA batteries. IC Role / Device Role / Timing Role: Low-drift, low-power instrumentation amplifier front-end with rail-to-rail output driving ADC reference or buffer stage. Use Value: 250 pA input bias current avoids loading high-impedance sensor elements; 1.5 µA supply current extends battery life by >3× versus standard op amps. |
| Micropower Integrating Current Monitor | Remote Industrial Temperature Transmitter |
Use Scenario: Integrating leakage current (nA–µA range) over time in battery health monitoring or capacitor self-discharge testing. IC Role / Device Role / Timing Role: Precision integrator using LT1495CN8#PBF's low input offset and bias current to minimize integration drift. Use Value: 375 µV max VOS and 0.4 µV/°C typical drift ensure <0.5% integration error over 8-hour test cycles at ambient temperature swings. | Use Scenario: 4–20 mA loop-powered transmitter located in unheated outdoor enclosures (-40°C to +70°C). IC Role / Device Role / Timing Role: Signal conditioner and loop driver amplifier operating from loop power with minimal headroom consumption. Use Value: 2.2 V minimum supply voltage and rail-to-rail output allow reliable operation even as loop voltage drops to 10 V under worst-case cable loss. |
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 |
|---|---|---|---|
| LT1495CS8#PBF | Same electrical specs; SO-8 package (3.9 mm × 4.9 mm) vs PDIP (9.27 mm × 6.35 mm) | Preferred for space-constrained PCBs; higher thermal resistance (θJA = 190°C/W vs 130°C/W) | Select when board area is limited and thermal margin allows higher junction temperature rise. |
| LT1672CS8#PBF | 2 µA max supply current; decompensated (min gain = 5); lower VOS (250 µV max); no Over-The-Top input | Suitable only for fixed-gain ≥5 circuits; cannot replace LT1495CN8#PBF in unity-gain buffers or high-common-mode applications | Choose only if gain ≥5 is acceptable and Over-The-Top capability is unnecessary - not a drop-in replacement. |
Compared with LT1495CS8#PBF, LT1495CN8#PBF offers lower thermal resistance for better power dissipation in through-hole designs, while LT1672CS8#PBF trades Over-The-Top functionality and unity-gain stability for slightly lower offset and higher speed - requiring redesign of feedback networks and input conditioning.
Availability
LT1495CN8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor interfaces, and industrial current monitoring requiring stable component supply with long-term lifecycle support.
Supply support for LT1495CN8#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LT1495CN8#PBF belongs to ADI's legacy Linear Technology precision op amp portfolio, designed specifically for ultra-low-power, high-accuracy signal conditioning in energy-constrained and high-common-mode industrial and portable systems.
FAQ
What is the maximum common-mode voltage the LT1495CN8#PBF can handle?
The LT1495CN8#PBF supports a common-mode input voltage range of –0.3 V to 36 V, including Over-The-Top operation - meaning inputs can exceed the positive supply rail (V+) by up to 36 V. This is confirmed in the Absolute Maximum Ratings table and Applications Information section of the datasheet, enabling direct high-side sensing without attenuation.
Does the LT1495CN8#PBF support single-supply operation?
Yes, the LT1495CN8#PBF fully supports single-supply operation from 2.2 V to 36 V. Its rail-to-rail input stage accepts signals down to –0.3 V (i.e., 0.3 V below ground), and its rail-to-rail output swings within 32 mV of V+ (no load) and 320 mV of V+ (100 µA source), making it ideal for 3 V and 5 V microcontroller-based systems.
What is the guaranteed operating temperature range for the LT1495CN8#PBF?
The LT1495CN8#PBF is specified and tested over –40°C to +85°C (Industrial grade). The 'C' suffix denotes this temperature grade, and all electrical characteristics in the datasheet's "G"-marked rows apply across this full range at 3 V, 5 V, and ±15 V supplies.
Can the LT1495CN8#PBF drive capacitive loads?
Yes, but with limitations. The LT1495CN8#PBF remains stable with ≤100 pF capacitive load when the output is biased near mid-supply. If the output operates within ~100 mV of V+, allowable capacitance drops to ≤500 pF (at 5 V supply) or ≤100 pF (at 30 V supply), as documented in the Capacitive Load Handling graph (Figure 1495 G12).
Is the LT1495CN8#PBF pin-compatible with other dual op amps in PDIP-8?
Yes - the LT1495CN8#PBF uses the industry-standard dual op amp pinout (SO-8/PDIP-8): Pin 1 = OUT A, Pin 2 = –IN A, Pin 3 = +IN A, Pin 4 = V–, Pin 5 = V+, Pin 6 = OUT B, Pin 7 = –IN B, Pin 8 = +IN B. This matches LM358, TL072, and AD8602 pinouts, enabling direct replacement in many legacy designs.
LT1495CN8#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:
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1495CN8#PBF FAQ
1.How can I place an order for LT1495CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495CN8#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 LT1495CN8#PBF reliable?
The price and inventory of LT1495CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1495CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495CN8#PBF?
LT1495CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495CN8#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 LT1495CN8#PBF?
For technical support, including LT1495CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495CN8#PBF requirements.
6.How does Aetrix verify that LT1495CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1495CN8#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 LT1495CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1495CN8#PBF?
All LT1495CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495CN8#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 LT1495CN8#PBF part is unused and in its original packaging.
Return procedure for LT1495CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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