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Analog Devices Inc. LT1495CS8#PBF
- Part No.:
- LT1495CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1495CS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:395
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Product details
Overview
LT1495CS8#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. It is used in remote sensor amplifiers and battery-powered instrumentation where ultra-low power and high DC precision are critical.
For engineers reviewing the LT1495CS8#PBF datasheet, LT1495CS8#PBF pinout, LT1495CS8#PBF application, or LT1495CS8#PBF equivalent, key selection criteria include its guaranteed –40°C to 85°C operation, reverse battery protection to –18V, rail-to-rail output swing within 35mV of rails at 100µA load, and input common-mode range extending above V+, enabling robust signal conditioning in harsh industrial and automotive environments.
Technical Context
The LT1495CS8#PBF employs a three-stage architecture: a rail-to-rail input stage with Over-The-Top™ topology that remains functional even when inputs exceed V+, a folded cascode second stage for high open-loop gain (≥100 V/mV), and a rail-to-rail common-emitter output stage delivering ±500µA drive capability. Its input bias current is as low as 250pA, enabling use with megohm-level source impedances without significant error.
It features 90dB PSRR and CMRR over a wide supply range (2.2V–36V), stable operation with capacitive loads up to 100pF at unity gain, and specified performance across single-supply (3V, 5V) and split-supply (±15V) configurations. The device is characterized for operation at 0°C to 70°C (C-grade), with guaranteed specs from –40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | 1.5µA max - enables multi-year battery life in portable sensors and IoT endpoints. |
| Input Offset Voltage | 375µV max at 25°C - ensures <0.1% gain error in 12-bit precision signal chains. |
| Input Bias Current | 250pA max - supports accurate amplification of signals from high-impedance sources like pH electrodes or photodiodes. |
| Rail-to-Rail Output Swing | VOH = V+ – 35mV, VOL = 35mV at 100µA - maximizes dynamic range in low-voltage systems (e.g., 3.3V or 5V supplies). |
| Common-Mode Input Range | –0.3V to 36V - includes Over-The-Top™ operation above V+, allowing direct sensing of VBAT in automotive hot-swap applications. |
| Reverse Battery Protection | –18V min - eliminates need for external series diodes in battery-powered equipment, reducing BOM cost and voltage drop. |
| Gain Bandwidth Product | 2.7kHz - sufficient for DC-coupled sensor interfaces, integrators, and low-frequency filtering (e.g., 10Hz anti-aliasing). |
Pinout & Package
LT1495CS8#PBF is housed in an 8-lead plastic SO (Small Outline) package (S8), 0.150-inch width, RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail sourced/sunk current; connects directly to feedback network or load. |
| 2 (–IN A) | Inverting input A | Differential node for A channel; high-impedance (250pA bias) and Over-The-Top™ capable. |
| 3 (+IN A) | Non-inverting input A | Differential node for A channel; same Over-The-Top™ and impedance specs as Pin 2. |
| 4 (V–) | Negative supply rail | Reference for dual-supply operation or ground in single-supply; reverse-battery protected. |
| 5 (V+) | Positive supply rail | Accepts 2.2V–36V; input common-mode extends above this pin via Over-The-Top™ design. |
| 6 (OUT B) | Amplifier B output | Independent rail-to-rail output; enables dual-channel signal conditioning on one die. |
| 7 (–IN B) | Inverting input B | Second differential input pair; electrically isolated from Channel A, sharing only V+/V– rails. |
| 8 (+IN B) | Non-inverting input B | Second non-inverting input; identical specs to Pin 3, supporting independent dual-amplifier topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Architecture | Enables input voltages > V+ (e.g., monitoring 12V battery on 5V system), eliminating level-shifting circuitry. |
| Ultra-Low Supply Current | 1.5µA per amplifier allows continuous operation from coin cells or energy-harvesting sources for >10 years. |
| Precision DC Performance | 375µV max VOS, 0.4µV/°C drift, and 90dB CMRR ensure stable, accurate amplification in temperature-variable environments. |
| Reverse Battery Tolerance | Withstands –18V supply reversal with <100nA leakage, protecting downstream circuitry without external diodes. |
| Rail-to-Rail Input & Output | Full 0V–36V input range and output swing within 35mV of rails preserve signal fidelity in low-voltage and high-dynamic-range systems. |
Applications
| Remote Sensor Amplifier | Micropower Filter |
|---|---|
Use Scenario: Amplifying µV-level thermocouple or strain gauge outputs in wireless sensor nodes deployed in inaccessible locations. IC Role / Device Role / Timing Role: Precision front-end amplifier with high input impedance and low noise (4µVP-P, 0.1–10Hz), configured as non-inverting gain stage. Use Value: Enables 16-bit-equivalent resolution without external chopper or auto-zero circuitry, while drawing <3µA total for dual-channel operation. | Use Scenario: Implementing a 6th-order 10Hz elliptic lowpass filter for ECG or vibration monitoring in wearable medical devices. IC Role / Device Role / Timing Role: Dual op-amp section providing active filtering stages with matched DC characteristics across channels. Use Value: Achieves 50dB stopband attenuation at 50/60Hz while consuming only 3µA per stage-critical for multi-day battery runtime. |
| Battery- or Solar-Powered System | Portable Instrumentation |
Use Scenario: High-side current sensing in solar charge controllers or battery fuel gauges operating from 3V to 36V input. IC Role / Device Role / Timing Role: Current-sense amplifier with Over-The-Top™ inputs referenced to battery positive terminal. Use Value: Eliminates need for level-shifters or isolated supplies; measures load current with <1% error across full VBAT range and temperature. | Use Scenario: Signal conditioning in handheld multimeters or portable gas analyzers requiring stable DC accuracy and long shelf life. IC Role / Device Role / Timing Role: Dual-channel buffer and reference amplifier driving ADC inputs and internal voltage references. Use Value: Maintains <0.01% linearity over –40°C to 85°C using only 3µA quiescent current-reducing self-heating and thermal drift errors. |
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 |
|---|---|---|---|
| LT1495IS8#PBF | Same pinout and specs, but rated for –40°C to 85°C industrial grade (I-grade); LT1495CS8#PBF is commercial grade (C-grade) with same temp spec but lower QA sampling. | LT1495IS8#PBF is preferred for extended-temperature industrial deployments where full characterization at extremes is required. | Select LT1495IS8#PBF when full industrial qualification and traceable lot testing are mandated. |
| LT1672CS8#PBF | 2µA max supply current, decompensated (AV ≥ 5), 12kHz GBW; higher speed but requires minimum gain stability and lacks Over-The-Top™ input. | Not suitable for inputs above V+ or ultra-low-power (<1.5µA) applications; better for higher-bandwidth micropower integrators. | Choose LT1672CS8#PBF only if bandwidth >2.7kHz is needed and Over-The-Top™ functionality is not required. |
Compared with LT1495IS8#PBF, the LT1495CS8#PBF offers identical electrical performance and pin compatibility but with commercial-grade QA sampling; versus LT1672CS8#PBF, it trades bandwidth for true Over-The-Top™ operation and lower supply current-making it superior for battery-critical, high-common-mode sensing.
Availability
LT1495CS8#PBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote sensor amplifiers, and micropower filters requiring stable component supply across industrial and medical OEM programs.
Supply support for LT1495CS8#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, manufacturing, and documentation for legacy Linear parts including the LT1495 family.
The LT1495 is part of Linear's Over-The-Top™ precision op amp product line, designed specifically for ultra-low-power, high-accuracy signal conditioning in battery-constrained and high-common-mode industrial systems.
FAQ
What is the maximum supply voltage rating for LT1495CS8#PBF?
The LT1495CS8#PBF has an absolute maximum total supply voltage (V+ to V–) of 36V. It operates reliably across a recommended supply range of 2.2V to 36V, supporting both single-supply (e.g., 5V, 12V, 24V) and split-supply (±15V) configurations. Exceeding 36V risks permanent damage per Absolute Maximum Ratings.
Does LT1495CS8#PBF support rail-to-rail input operation above the positive supply rail?
Yes, the LT1495CS8#PBF features Over-The-Top™ input architecture, explicitly enabling input voltages up to 36V - which exceeds the positive supply rail (V+) - without damage or loss of function. This allows direct sensing of battery voltage or other high-side signals without external level-shifting components.
What is the guaranteed input offset voltage specification for LT1495CS8#PBF?
The LT1495CS8#PBF guarantees a maximum input offset voltage of 375µV at 25°C and 5V supply, with typical values around 150µV. Over the full –40°C to 85°C temperature range, the max VOS is 475µV at 3V supply and 375µV at 5V supply, ensuring predictable DC accuracy in precision analog front-ends.
Can LT1495CS8#PBF drive capacitive loads, and what is the limit?
The LT1495CS8#PBF is stable with capacitive loads up to 100pF when configured at unity gain and biased at mid-supply. If the output operates within ~100mV of either rail (e.g., near V+ or GND), the allowable capacitance decreases - to <500pF at 5V supply and <100pF at 30V supply - due to reduced phase margin under rail-saturated conditions.
Is LT1495CS8#PBF pin-compatible with other packages in the LT1495 family?
Yes, the LT1495CS8#PBF (SO-8) shares the identical 8-pin dual op-amp pinout with LT1495CN8 (PDIP-8) and LT1495CMS8 (MSOP-8). All variants use the standard dual op-amp configuration: OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B - enabling direct PCB footprint interchangeability across package types.
LT1495CS8#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1495CS8#PBF FAQ
1.How can I place an order for LT1495CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495CS8#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 LT1495CS8#PBF reliable?
The price and inventory of LT1495CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1495CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495CS8#PBF?
LT1495CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495CS8#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 LT1495CS8#PBF?
For technical support, including LT1495CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495CS8#PBF requirements.
6.How does Aetrix verify that LT1495CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1495CS8#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 LT1495CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1495CS8#PBF?
All LT1495CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495CS8#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 LT1495CS8#PBF part is unused and in its original packaging.
Return procedure for LT1495CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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