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Analog Devices Inc. LT1012DN8#PBF
- Part No.:
- LT1012DN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1012DN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:209
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Product details
Overview
LT1012DN8#PBF from Analog Devices (formerly Linear Technology) is a precision picoampere-input, microvolt-offset operational amplifier in an 8-lead PDIP package. It delivers guaranteed 25µV max input offset voltage, 100pA max bias current, 0.6µV/°C max drift, 0.5µVP-P (0.1Hz–10Hz) noise, and operates down to ±1.2V supplies - enabling high-accuracy signal conditioning in low-power instrumentation, thermocouple amplifiers, and charge integrators.
For engineers reviewing the LT1012DN8#PBF datasheet, LT1012DN8#PBF pinout, LT1012DN8#PBF application, or LT1012DN8#PBF equivalent, key selection considerations include its guaranteed picoampere input bias over 0°C to 70°C, ±1.2V minimum supply operation, internal unity-gain compensation, and offset trim capability - critical for DC-coupled, low-drift analog front-ends requiring long-term stability without external trimming.
Technical Context
The LT1012DN8#PBF employs a proprietary bipolar input stage with guarded base diffusion to achieve sub-100pA bias currents across temperature while maintaining microvolt-level offset and ultra-low 1/f noise. Its internal compensation ensures stable unity-gain operation without external capacitors, and the dedicated OVER COMP and VOS TRIM pins support active bandwidth control and precision nulling.
Unlike general-purpose op amps, the LT1012DN8#PBF integrates matched input transistors with on-chip thermal symmetry and low-thermal-EMF leadframe design - directly enabling <1µV/°C warm-up drift and <0.3µV/month long-term offset stability, verified per MIL-STD-883 test methods.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 µV max - enables direct measurement of sub-millivolt sensor outputs without calibration drift. |
| Input Bias Current | 100 pA max - preserves integrity of high-impedance sources like photodiodes and piezoelectric sensors. |
| Offset Drift | 0.6 µV/°C max - ensures ≤1.2 µV error over 20°C ambient shift, critical for unattended industrial monitoring. |
| Supply Current | 500 µA max - supports dual-cell battery operation with <1 mW dissipation at ±1.5V. |
| CMRR / PSRR | 114 dB min - rejects >500,000:1 common-mode or supply noise, essential for bridge amplifier applications. |
| Min Supply Voltage | ±1.2 V - allows operation from single Li-ion or two NiCd cells without boost converters. |
| 0.1–10 Hz Noise | 0.5 µVP-P - sets baseline for precision DC measurements where flicker noise dominates. |
Pinout & Package
LT1012DN8#PBF uses an 8-lead plastic DIP (N8) package with 0.300-inch width, JEDEC MS-001 compliant footprint, and 130°C/W junction-to-ambient thermal resistance. Pin 1 is top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM | Connects to center tap of 5k–100k potentiometer for ±800 µV offset adjustment range. |
| 2 | –IN | Inverting input - guarded layout required to preserve picoampere bias performance. |
| 3 | +IN | Non-inverting input - must be guarded at same potential to minimize board leakage. |
| 4 | V– | Negative supply rail - also serves as case ground in metal-can variants (not applicable to N8). |
| 5 | OVER COMP | Connects to external capacitor (1–10,000 pF) to reduce slew-induced distortion or narrow noise bandwidth. |
| 6 | OUT | Output - capable of ±13 V swing into 10 kΩ load with <0.2 V/µs slew rate. |
| 7 | V+ | Positive supply rail - accepts ±1.2 V to ±20 V dual supplies. |
| 8 | VOS TRIM | Second offset trim terminal - completes nulling circuit with Pin 1 and external potentiometer. |
Key Features
| Feature | Design Value |
|---|---|
| Picoampere Input Bias | Maintains ≤100 pA over full 0°C to 70°C range - eliminates resistor thermal EMF errors in high-Z sensor interfaces. |
| Microvolt Offset Stability | Guaranteed 25 µV max + 0.6 µV/°C drift - enables 16-bit DC accuracy without periodic recalibration. |
| Low 0.1–10 Hz Noise | 0.5 µVP-P - defines resolution floor for slow-varying signals like strain gauge or thermistor outputs. |
| Ultra-Low Power Operation | 500 µA max supply current at ±1.5 V - extends battery life in portable data loggers beyond 5 years. |
| Guaranteed ±1.2 V Operation | Validated down to ±1.2 V supplies - supports energy-harvesting systems with minimal regulation overhead. |
Applications
| Thermocouple Amplifier | Charge Integrator |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltage from Type K/J thermocouples in industrial ovens with ambient shifts from 15°C to 65°C. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with cold-junction compensation interface and offset drift cancellation. Use Value: Delivers <±2°C total error over full temperature range using only passive components - no digital correction required. | Use Scenario: Converting picoampere photocurrent from radiation dosimetry sensors into measurable voltage over 100-second integration windows. IC Role / Device Role / Timing Role: Low-bias-current integrator with guarded input and low 1/f noise to prevent integration drift. Use Value: Achieves <0.1% linearity error over 10⁶:1 dynamic range due to <100 pA input leakage and <0.5 µVP-P noise. |
| Bridge Transducer Signal Chain | Low-Drift Reference Buffer |
Use Scenario: Conditioning mV-level output from 350 Ω Wheatstone bridges in load cell modules subjected to mechanical vibration and thermal cycling. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with matched input impedance and high CMRR. Use Value: Maintains >110 dB CMRR at 60 Hz despite PCB layout asymmetry - eliminating need for laser-trimmed resistors. | Use Scenario: Buffering 10 V reference from LTZ1000 or LM399 for 24-bit ADCs in metrology-grade digitizers. IC Role / Device Role / Timing Role: Zero-drift buffer with ultra-low noise and negligible loading effect on reference output impedance. Use Value: Adds <0.2 ppm error to reference stability budget - preserving 0.5 ppm/°C spec of buried-zener references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP-07DP | Higher 1.5 µV typical offset, 1.2 nA bias current, 1.3 mA supply current - lacks ±1.2 V operation. | Requires ≥±4 V supplies; unsuitable for battery-powered designs needing microamp quiescent current. | Select OP-07DP only when legacy socket compatibility is mandatory and power budget permits. |
| AD8628ARZ | Zero-drift architecture; 1 µV max offset, 1 pA bias, but 1.2 mA supply current and no VOS TRIM pins. | No manual offset nulling - limits use in applications requiring field recalibration or aging compensation. | Choose AD8628ARZ for lowest drift over time, but avoid where adjustable nulling or ultra-low IQ is critical. |
Compared with OP-07DP and AD8628ARZ, LT1012DN8#PBF uniquely balances ultra-low bias current, microvolt offset, sub-500 µA supply current, and user-adjustable nulling - making it optimal for portable, high-impedance, DC-precision systems where long-term stability and power efficiency are co-constrained.
Availability
LT1012DN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, charge integration, and bridge transducer signal conditioning requiring stable component supply across industrial, test & measurement, and aerospace programs.
Supply support for LT1012DN8#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 production and support for legacy Linear precision op amps including the LT1012 family.
The LT1012 product line was designed specifically for DC-precision applications demanding picoampere input bias, microvolt offset, and guaranteed low-drift performance - targeting instrumentation, scientific measurement, and calibration equipment.
FAQ
What is the maximum guaranteed input offset voltage for LT1012DN8#PBF over its operating temperature range?
The LT1012DN8#PBF guarantees a maximum input offset voltage of 25 µV at 25°C and 140 µV over its full 0°C to 70°C operating range, as specified in the Electrical Characteristics table for the "D" grade. This value includes both initial offset and worst-case drift across temperature - critical for applications requiring absolute DC accuracy without post-calibration.
Can LT1012DN8#PBF operate from a single 3.3 V supply?
No - LT1012DN8#PBF is a dual-supply operational amplifier requiring symmetric positive and negative rails. It supports minimum dual supplies of ±1.2 V (2.4 V total), so a single 3.3 V rail cannot be used directly. To run from 3.3 V, a charge-pump or inverting regulator must generate a negative rail (e.g., –1.2 V), or a rail-splitter IC must create a virtual ground - both approaches add noise and complexity that may degrade LT1012DN8#PBF's precision performance.
Does LT1012DN8#PBF require external frequency compensation?
No - LT1012DN8#PBF is internally compensated for unity-gain stability and requires no external compensation capacitor for standard configurations. However, the dedicated OVER COMP pin (Pin 5) allows connection of an external capacitor (1–10,000 pF) to improve capacitive load driving, reduce slew-induced distortion, or narrow noise bandwidth - providing design flexibility without compromising stability.
How does the VOS TRIM functionality work on LT1012DN8#PBF?
The LT1012DN8#PBF provides two dedicated offset trim terminals (Pins 1 and 8) that connect to the ends of a 5 kΩ to 100 kΩ potentiometer, with the wiper grounded. Adjusting the potentiometer applies opposing currents to the input stage, enabling ±800 µV of offset correction range. This allows field calibration to cancel system-level offsets - essential for applications like precision weigh scales or calibrated sensor modules where end-of-line trimming is required.
Is LT1012DN8#PBF pin-compatible with OP-07 or LM741 packages?
LT1012DN8#PBF uses an 8-pin PDIP (N8) package identical in footprint and pinout to the OP-07 and LM741 - enabling direct socket replacement in existing designs. However, unlike the OP-07, LT1012DN8#PBF has no internal nulling resistors and requires external trim components; unlike the LM741, it lacks frequency compensation pins and relies on internal compensation - so external compensation networks must be removed during substitution.
LT1012DN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 8 µV
- Current - Supply:
- 380µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1012DN8#PBF FAQ
1.How can I place an order for LT1012DN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1012DN8#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 LT1012DN8#PBF reliable?
The price and inventory of LT1012DN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1012DN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1012DN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1012DN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1012DN8#PBF?
LT1012DN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1012DN8#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 LT1012DN8#PBF?
For technical support, including LT1012DN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1012DN8#PBF requirements.
6.How does Aetrix verify that LT1012DN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1012DN8#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 LT1012DN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1012DN8#PBF?
All LT1012DN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1012DN8#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 LT1012DN8#PBF part is unused and in its original packaging.
Return procedure for LT1012DN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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