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Analog Devices Inc. LT1495IS8#TRPBF
- Part No.:
- LT1495IS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1495IS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,090
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Product details
Overview
LT1495IS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, 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 LT1495IS8#TRPBF datasheet, LT1495IS8#TRPBF pinout, LT1495IS8#TRPBF application, or LT1495IS8#TRPBF equivalent, key selection criteria include guaranteed operation at 125°C, reverse-battery protection to –18V, rail-to-rail output swing within 35mV of rails at 100µA load, and input bias current as low as 250pA - critical for megohm-level source impedance interfaces.
Technical Context
The LT1495IS8#TRPBF implements a three-stage architecture: a rail-to-rail input stage with Over-The-Top™ topology enabling common-mode operation above V+, a folded-cascode second stage delivering high open-loop gain (≥100 V/mV), and a rail-to-rail common-emitter output stage. Its input stage uses dual differential pairs with active current steering to maintain functionality beyond V+.
It achieves precision performance under micropower constraints: input offset drift is only 0.4µV/°C typical, CMRR and PSRR are both ≥90dB over 0.2V–10V common-mode range, and it maintains stable operation with capacitive loads up to 500pF when output is biased near mid-supply - though allowable capacitance reduces significantly near rail.
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 at 25°C - supports sub-millivolt accuracy in precision instrumentation. |
| Input Bias Current | 250pA max - permits use with >1MΩ source impedances without significant error. |
| Rail-to-Rail Output Swing | VOH = V+ – 35mV, VOL = 35mV (at 100µA) - maximizes dynamic range in single-supply systems. |
| Operating Temp Range | –40°C to +125°C - qualified for automotive under-hood and industrial harsh-environment use. |
| Reverse Battery Protection | Withstands –18V applied to V+ with <100nA leakage - eliminates need for external protection diodes. |
| Over-The-Top™ Input | Inputs operate up to 36V above V–, including >V+ - simplifies high-side sensing in wide-VIN applications. |
Pinout & Package
LT1495IS8#TRPBF is housed in an 8-lead plastic SOIC (S8) package, 0.150-inch narrow body, with standard dual op amp pinout and JEDEC MS-012AC footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking 500µA; rail-to-rail swing supports full-scale ADC interfacing. |
| 2 (–IN A) | Inverting input A | High-impedance node (250pA bias); accepts signals up to 36V above V–, including >V+. |
| 3 (+IN A) | Non-inverting input A | Same Over-The-Top™ capability as Pin 2; matched bias current minimizes offset error. |
| 4 (V–) | Negative supply rail | Reference for internal biasing; inputs tolerate –0.3V below this rail with current limiting. |
| 5 (+IN B) | Non-inverting input B | Independent channel; identical specs and Over-The-Top™ behavior as Channel A inputs. |
| 6 (–IN B) | Inverting input B | Matched to Pin 2; enables dual-channel differential or independent signal paths. |
| 7 (OUT B) | Amplifier B output | Electrically identical to Pin 1; supports independent load driving or cascaded gain stages. |
| 8 (V+) | Positive supply rail | Accepts 2.2V to 36V; reverse-battery protected to –18V with negligible quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Architecture | Enables high-side current sensing and level translation without external level shifters or supply rails above signal range. |
| 1.5µA Max Supply Current per Amp | Reduces system power budget by >90% vs. conventional precision op amps - essential for energy-harvesting designs. |
| Rail-to-Rail Input & Output | Preserves full signal swing in 3V and 5V systems; eliminates clipping at supply boundaries in single-supply topologies. |
| 375µV Max Input Offset Voltage | Minimizes DC error in precision transducer amplification (e.g., strain gauges, RTDs) without trimming. |
| –40°C to +125°C Guaranteed Operation | Validated for automotive engine control, industrial motor drives, and outdoor IoT edge nodes without derating. |
| Reverse Battery Protection to –18V | Eliminates need for series diode or MOSFET protection - reduces BOM count and forward voltage drop. |
Applications
| High-Side Current Sensing | Battery-Powered Sensor Amplifier |
|---|---|
|
Use Scenario: Monitoring charge/discharge current in 12V–36V automotive or solar battery systems using a shunt resistor on the high side of the load. IC Role / Device Role / Timing Role: LT1495IS8#TRPBF serves as a precision difference amplifier with Over-The-Top™ inputs referenced to V+, rejecting common-mode voltages up to 36V. Use Value: Enables accurate current measurement without ground-referenced shunt limitations or additional level-shifting circuitry. |
Use Scenario: Amplifying low-level thermocouple or pH electrode outputs in portable handheld meters powered by coin cells. IC Role / Device Role / Timing Role: LT1495IS8#TRPBF provides rail-to-rail input/output gain staging with <2µA total quiescent current for both channels. Use Value: Extends battery life to multi-year duration while maintaining µV-level offset stability over temperature. |
| Micropower Integrating Current Sense | Remote Industrial Temperature Transmitter |
|
Use Scenario: Converting leakage current (nA–µA range) into a linear voltage ramp for battery health monitoring or capacitor ESR testing. IC Role / Device Role / Timing Role: LT1495IS8#TRPBF configures as an integrator with femtoampere-level input bias, minimizing integration error. Use Value: Achieves <0.1% linearity over 10-second integration windows without active bias cancellation circuitry. |
Use Scenario: Conditioning 4–20mA loop transmitter signals in hazardous-area field devices operating at –40°C to +125°C ambient. IC Role / Device Role / Timing Role: LT1495IS8#TRPBF acts as a precision buffer and voltage-to-current converter front-end with guaranteed 125°C operation. Use Value: Eliminates need for external temperature compensation or derating, reducing calibration complexity and cost. |
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 die, but rated for 0°C to 70°C (commercial temp grade); lower max VOS (375µV vs. 475µV at 125°C). | Not qualified for automotive or extended industrial environments requiring >85°C operation. | Select LT1495CS8#PBF only for cost-sensitive consumer or lab equipment with ambient <70°C. |
| LT1672CS8#PBF | 2µA max supply current, decompensated (AV ≥ 5 required), 12kHz GBW - higher speed but less stable at unity gain. | Limited to fixed-gain configurations; unsuitable for unity-gain buffers or integrators without external compensation. | Choose LT1672CS8#PBF when bandwidth >10kHz is needed and gain ≥5 can be maintained in the signal path. |
Compared with LT1495CS8#PBF and LT1672CS8#PBF, the LT1495IS8#TRPBF uniquely combines 125°C qualification, unity-gain stability, and Over-The-Top™ input capability - making it the only option for high-temperature, high-common-mode, single-supply precision sensing without redesign.
Availability
LT1495IS8#TRPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor modules, and industrial process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1495IS8#TRPBF 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 qualification for legacy Linear op amps including the LT1495 family.
The LT1495 series was designed specifically for ultra-low-power, high-precision analog signal conditioning in harsh environments - emphasizing micropower operation, Over-The-Top™ input robustness, and extended temperature reliability.
FAQ
What is the maximum supply voltage rating for LT1495IS8#TRPBF?
The LT1495IS8#TRPBF has a total supply voltage (V+ to V–) rating of 36V. Absolute maximum differential input voltage is also 36V. Exceeding either rating risks permanent damage. Operation is fully specified from 2.2V to 36V, with reverse-battery protection to –18V on the V+ pin.
Does LT1495IS8#TRPBF support rail-to-rail output swing at full rated load?
Yes - the LT1495IS8#TRPBF delivers rail-to-rail output swing with defined limits: VOH = V+ – 35mV and VOL = 35mV (typical) at ISINK/ISOURCE = 100µA. At 500µA load, swing degrades to ~V+ – 320mV and ~210mV above V–, per Electrical Characteristics table.
Can LT1495IS8#TRPBF inputs safely operate above the positive supply rail?
Yes - the LT1495IS8#TRPBF features Over-The-Top™ inputs that function normally with common-mode voltages up to 36V above V–, including levels exceeding V+. Input bias current rises to ~180nA in this region, but functionality and precision are preserved.
What is the guaranteed input offset voltage specification for LT1495IS8#TRPBF over temperature?
The LT1495IS8#TRPBF guarantees input offset voltage ≤475µV over the full –40°C to +125°C operating range. At 25°C only, the limit is tighter: ≤375µV. The typical drift is 0.4µV/°C, meaning worst-case drift over 165°C span adds ≤660µV - well within the 125°C max spec.
Is LT1495IS8#TRPBF unity-gain stable?
Yes - the LT1495IS8#TRPBF is internally compensated for unity-gain stability. It drives capacitive loads up to 500pF when output is biased near mid-supply, though stability margin decreases when operating within ~100mV of either rail - consult Capacitive Load Handling curves in the datasheet.
LT1495IS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LT1495IS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1495IS8#TRPBF 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#TRPBF reliable?
The price and inventory of LT1495IS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1495IS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1495IS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1495IS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1495IS8#TRPBF?
LT1495IS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1495IS8#TRPBF 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#TRPBF?
For technical support, including LT1495IS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1495IS8#TRPBF requirements.
6.How does Aetrix verify that LT1495IS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1495IS8#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1495IS8#TRPBF?
All LT1495IS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1495IS8#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LT1495IS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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