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Analog Devices Inc. LT1012ACN8#PBF
- Part No.:
- LT1012ACN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1012ACN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:120
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Product details
Overview
LT1012ACN8#PBF from Analog Devices (formerly Linear Technology) is a precision operational amplifier optimized for ultra-low input bias current (≤100 pA), microvolt-level offset voltage (≤25 µV), and low 0.1 Hz–10 Hz noise (0.5 µVP-P). It operates from ±1.2 V supplies, delivers 5 mA output current, and maintains picoampere performance across 0°C to 70°C - ideal for charge integrators, thermocouple amplifiers, and high-impedance sensor front-ends.
For engineers reviewing the LT1012ACN8#PBF datasheet, LT1012ACN8#PBF pinout, LT1012ACN8#PBF application, or LT1012ACN8#PBF equivalent, key selection criteria include guaranteed 0.6 µV/°C max drift, 114 dB min CMRR/PSRR, ±13 V output swing into 10 kΩ, and compatibility with OP-07 socket replacements requiring no external compensation.
Technical Context
The LT1012ACN8#PBF uses a proprietary bipolar input stage with guarded base diffusion to achieve ≤100 pA bias current over temperature while maintaining microvolt offset stability. Its internal unity-gain compensation eliminates need for external capacitors, and the dedicated overcompensation terminal enables bandwidth/noise trade-off tuning for capacitive load driving or logarithmic amplifier stability.
Offset nulling is supported via two pins (1 and 8) accommodating a 5 kΩ–100 kΩ potentiometer, enabling ±800 µV adjustment range. Input protection diodes are present but lack series limiting resistors to preserve picoampere leakage integrity - requiring external current limiting in fast large-signal applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 µV max - ensures ≤25 µV DC error at room temperature without trimming |
| Input Bias Current | 100 pA max - enables use with >1 GΩ source impedances without significant voltage error |
| Offset Drift | 0.6 µV/°C max - limits thermal-induced error to <4.2 µV over 70°C operating range |
| Supply Current | 500 µA max - supports dual-cell battery operation with only 1 mW dissipation at ±1.5 V |
| CMRR / PSRR | 114 dB min - rejects >500,000:1 common-mode or supply ripple interference |
| Min Supply Voltage | ±1.2 V - allows operation from two NiCd cells or low-voltage industrial rails |
| 0.1–10 Hz Noise | 0.5 µVP-P - critical for precision DC measurements like strain gauge or pH sensing |
Pinout & Package
LT1012ACN8#PBF is housed in an 8-lead PDIP (N8) package with 0.300-inch width and through-hole mounting. Pin 1 is top-left corner when notch faces up; case is electrically isolated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS Trim (−) | Connects to wiper of trim pot for negative offset adjustment |
| 2 | Inverting Input (−IN) | Differential input node; guarded layout required for pA-level accuracy |
| 3 | Non-inverting Input (+IN) | Differential input node; matched trace length/temperature critical for µV drift |
| 4 | V− (Negative Supply) | Ground reference for negative rail; decoupling capacitor recommended |
| 5 | VOS Trim (+) | Connects to wiper of trim pot for positive offset adjustment |
| 6 | Output | Capable of ±13 V swing into 10 kΩ; drives 5 mA load at unity gain |
| 7 | V+ (Positive Supply) | Power input; requires local 0.1 µF ceramic decoupling |
| 8 | Overcompensation | Accepts external capacitor to reduce bandwidth/noise or stabilize gain ≥10 circuits |
Key Features
| Feature | Design Value |
|---|---|
| Picoampere input bias | Maintains ≤100 pA over full 0°C–70°C range - enables femtoampere-level current measurement |
| Microvolt offset & drift | 25 µV max offset + 0.6 µV/°C max drift - eliminates need for periodic recalibration in lab instruments |
| Low 0.1–10 Hz noise | 0.5 µVP-P - preserves signal integrity in slow-slewing applications like integrating ADCs |
| Ultra-low supply voltage | Guaranteed operation down to ±1.2 V - supports portable, energy-constrained designs |
| Internal unity-gain compensation | No external capacitor needed - simplifies PCB layout and reduces BOM count |
Applications
| Charge Integrator | Thermocouple Amplifier |
|---|---|
Use Scenario: Converting low-level ion current from mass spectrometry detectors into stable voltage output. IC Role / Device Role / Timing Role: Precision integrator op amp with picoampere input bias to prevent capacitor leakage error accumulation. Use Value: Enables sub-picoampere current resolution over minutes-long integration periods without drift-induced baseline shift. | Use Scenario: Amplifying µV-level Seebeck voltage from Type J thermocouples in industrial process control. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with cold-junction compensation interface. Use Value: Delivers <0.1°C measurement uncertainty over –50°C to 150°C using only passive resistor trimming. |
| Bridge Transducer Interface | Photodiode Sensor Amplifier |
Use Scenario: Reading Wheatstone bridge outputs from load cells or pressure sensors in medical weighing systems. IC Role / Device Role / Timing Role: High-CMRR differential amplifier with guard-driven inputs to reject cable capacitance effects. Use Value: Achieves >120 dB effective CMRR via external resistor network, rejecting 60 Hz mains interference in unshielded environments. | Use Scenario: Converting nanoampere photocurrent from silicon photodiodes in optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias to avoid dark-current error masking weak signals. Use Value: Supports 100 MΩ feedback resistor without significant offset error, enabling 10 nA–100 µA dynamic range. |
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 1.2 µV/°C drift, 1.8 nA bias current, no ±1.2 V operation guarantee | Requires higher supply voltage; unsuitable for battery-powered low-drift systems | Choose OP-07DP only if legacy design reuse or cost sensitivity outweighs drift/bias requirements |
| LTC2050CS8#PBF | Zero-drift architecture, 0.015 µV/°C typical drift, but 500 µA supply current and no overcompensation pin | Better long-term stability but lacks flexibility for capacitive load driving or noise bandwidth control | Select LTC2050CS8#PBF when ultra-low drift dominates over power or layout flexibility needs |
Compared with OP-07DP and LTC2050CS8#PBF, LT1012ACN8#PBF uniquely balances picoampere bias, microvolt drift, ultra-low supply voltage, and analog tuning capability - making it optimal for portable, high-impedance, wide-temperature industrial sensors where both precision and design adaptability matter.
Availability
LT1012ACN8#PBF is available at Aetrix Electronics and suitable for charge integrators, thermocouple amplifiers, and bridge transducer interfaces requiring stable component supply across extended production lifecycles.
Supply support for LT1012ACN8#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 continues its legacy of high-performance analog ICs for precision signal conditioning.
The LT1012 product line was designed specifically for universal precision applications demanding picoampere input bias, microvolt offset, and low-frequency noise - targeting instrumentation, metrology, and sensor signal chains where traditional op amps fail.
FAQ
What is the maximum guaranteed input bias current for LT1012ACN8#PBF over its operating temperature range?
The LT1012ACN8#PBF guarantees ≤100 pA input bias current across its full 0°C to 70°C operating range. This specification is tested per device and applies under standard conditions (±15 V supplies, 25°C ambient). At temperature extremes, bias current remains in the low hundreds of picoamperes - significantly lower than competing precision op amps - enabling reliable operation with >1 GΩ source impedances without measurable error.
Can LT1012ACN8#PBF replace OP-07 in existing sockets without circuit modification?
Yes, LT1012ACN8#PBF is pin-compatible with OP-07 in 8-pin DIP sockets and can be inserted directly without removing external frequency compensation or nulling components. Its internal unity-gain compensation and identical pinout (including VOS trim pins 1 and 5) allow drop-in replacement. However, verify that the ±1.2 V minimum supply voltage meets system requirements, as some OP-07 designs operate near ±1.5 V margins.
Does LT1012ACN8#PBF support offset nulling, and how is it implemented?
Yes, LT1012ACN8#PBF supports external offset nulling via pins 1 (VOS Trim −) and 5 (VOS Trim +). A 5 kΩ to 100 kΩ potentiometer is connected between these pins with its wiper tied to V− (pin 4); this configuration provides ±800 µV adjustment range. Nulling is essential for applications requiring <5 µV residual offset after calibration, such as high-resolution data acquisition front-ends.
What is the purpose of the Overcompensation pin (pin 8) on LT1012ACN8#PBF?
The Overcompensation pin (pin 8) on LT1012ACN8#PBF accepts an external capacitor to modify dominant-pole frequency, enabling three key functions: improved capacitive load driving (e.g., >100 pF), reduced integrated noise bandwidth, or stabilization of circuits with gain in the feedback path (e.g., logarithmic amplifiers). Typical values range from 10 pF to 1000 pF depending on target bandwidth and phase margin requirements.
Is LT1012ACN8#PBF suitable for single-supply operation?
LT1012ACN8#PBF is specified for dual-supply operation (±1.2 V to ±20 V) and does not support true single-supply rail-to-rail input/output. Its input common-mode range extends to within ~1.2 V of each rail, and output swings to within ~1 V - meaning it requires sufficient headroom above and below ground. For single-supply applications, consider level-shifting the input signal or using a dedicated single-supply precision op amp; LT1012ACN8#PBF itself must be powered from split rails.
LT1012ACN8#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
LT1012ACN8#PBF FAQ
1.How can I place an order for LT1012ACN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1012ACN8#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 LT1012ACN8#PBF reliable?
The price and inventory of LT1012ACN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1012ACN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1012ACN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1012ACN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1012ACN8#PBF?
LT1012ACN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1012ACN8#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 LT1012ACN8#PBF?
For technical support, including LT1012ACN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1012ACN8#PBF requirements.
6.How does Aetrix verify that LT1012ACN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1012ACN8#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 LT1012ACN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1012ACN8#PBF?
All LT1012ACN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1012ACN8#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 LT1012ACN8#PBF part is unused and in its original packaging.
Return procedure for LT1012ACN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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