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Analog Devices Inc. LT1012CN8#PBF
- Part No.:
- LT1012CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1012CN8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:534
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Product details
Overview
LT1012CN8#PBF from Analog Devices (formerly Linear Technology) is a precision bipolar operational amplifier optimized for ultra-low input bias current (±35 pA max), microvolt-level offset voltage (25 µV max), and low 0.1 Hz–10 Hz noise (0.5 µVP-P). It operates from ±1.2 V supplies, delivers ±13 V output swing into 10 kΩ, and is internally compensated for unity-gain stability - enabling direct replacement of OP-07 in battery-powered instrumentation, thermocouple amplifiers, and charge integrators.
For engineers reviewing the LT1012CN8#PBF datasheet, LT1012CN8#PBF pinout, LT1012CN8#PBF application, or LT1012CN8#PBF equivalent, key selection criteria include guaranteed picoampere input bias over 0°C to 70°C, 114 dB CMRR/PSRR, 0.6 µV/°C max drift, and compatibility with PDIP-8 socketed designs requiring no external compensation.
Technical Context
The LT1012CN8#PBF employs a proprietary bipolar input stage with guarded base diffusion and on-chip trimming to achieve <35 pA input bias current and <25 µV offset voltage at 25°C, with drift limited to 0.6 µV/°C. Its internal compensation network ensures stable operation at unity gain while supporting overcompensation via Pin 5 for improved capacitive load drive or noise bandwidth reduction.
It features dual input protection diodes without series limiting resistors - preserving picoampere performance - and includes dedicated offset trim (Pins 1 & 8) and overcompensation (Pin 5) terminals. The device maintains guaranteed specifications across ±1.2 V to ±20 V supply range and supports rail-to-rail common-mode input up to ±13.5 V at ±15 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 µV max - enables sub-10 ppm accuracy in 12-bit DAC output stages without calibration |
| Input Bias Current | ±35 pA max at 25°C - preserves integrity of high-impedance sensor nodes (e.g., photodiodes, pH electrodes) |
| CMRR / PSRR | 114 dB min - rejects power supply ripple and common-mode interference in precision bridge amplifiers |
| Supply Voltage Range | ±1.2 V to ±20 V - supports single-cell Li-ion (2.4 V total) or dual Ni-Cad (2.4 V) operation with 1 mW dissipation |
| 0.1–10 Hz Noise | 0.5 µVP-P - critical for DC-coupled thermocouple and strain gauge signal conditioning |
| Output Swing | ±13 V into 10 kΩ - delivers full dynamic range in ±15 V systems with minimal headroom loss |
| Gain Bandwidth | 1.2 MHz typical - sufficient for closed-loop bandwidths up to 100 kHz in gain-of-100 configurations |
Pinout & Package
N8 package: 8-lead plastic DIP (0.300" width), through-hole mount, JEDEC MS-001 compliant. RoHS-compliant lead finish, 100°C max junction temperature, θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (–) | Connects to wiper of 5–100 kΩ potentiometer for ±800 µV offset adjustment range |
| 2 | Inverting Input (–IN) | High-impedance differential input node; guard ring required for pA-level leakage control |
| 3 | Non-Inverting Input (+IN) | Matched impedance path to Pin 2; requires symmetrical PCB layout and guarding |
| 4 | V– (Negative Supply) | Accepts –1.2 V to –20 V; supports split or dual-supply operation |
| 5 | Overcompensation | External capacitor connection point to extend phase margin for >100 pF capacitive loads |
| 6 | Output | Capable of sourcing/sinking 5 mA; short-circuit protected indefinitely |
| 7 | V+ (Positive Supply) | Accepts +1.2 V to +20 V; PSRR ≥114 dB minimizes supply-induced errors |
| 8 | Offset Null (+) | Completes nulling circuit; tied to opposite end of trim potentiometer from Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed ±1.2 V operation | Enables use in ultra-low-power portable instrumentation without supply boosters |
| 0.6 µV/°C max offset drift | Reduces thermal error to <1 µV over 10°C ambient shift - eliminates warm-up stabilization delays |
| 114 dB min CMRR/PSRR | Maintains accuracy in noisy industrial environments with shared ground returns or switching supplies |
| Internally compensated | Eliminates need for external compensation components in unity-gain follower or integrator topologies |
| Picoampere input bias (±35 pA) | Preserves signal integrity in >1 GΩ source impedances (e.g., piezoelectric sensors, electrophysiology electrodes) |
Applications
| Thermocouple Amplifier | Charge Integrator |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltage from Type J/K thermocouples with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled op amp providing gain-of-1000 with sub-µV offset contribution. Use Value: Achieves ±0.5°C accuracy over –50°C to +150°C without per-unit calibration due to 0.6 µV/°C drift and 25 µV max VOS. | Use Scenario: Converting picoampere photocurrent from radiation or particle detectors into measurable voltage. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 GΩ feedback resistor and guarded input traces. Use Value: Enables femtocoulomb-level charge resolution with <0.5 µVP-P 0.1–10 Hz noise and negligible input bias current error. |
| Low-Frequency Active Filter | Bridge Transducer Signal Conditioning |
Use Scenario: Implementing 0.1 Hz–10 Hz bandpass filtering for biomedical EEG/ECG acquisition. IC Role / Device Role / Timing Role: Dual-op-amp Sallen-Key topology with matched LT1012CN8#PBF units for pole alignment. Use Value: Maintains filter Q and center frequency stability over temperature due to matched drift (0.6 µV/°C) and low 1/f noise corner (2.5 Hz). | Use Scenario: Amplifying mV-level differential output from Wheatstone bridge pressure sensors. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with 56 MΩ gain-setting resistors. Use Value: Delivers 140 dB effective CMRR (with 0.01% resistor matching) and <1 ppm nonlinearity error from ultra-low VOS drift. |
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-07CP | Higher supply current (1.3 mA vs. 500 µA), higher bias current (1.8 nA vs. 35 pA), no overcompensation pin | Not suitable for battery-powered or ultra-high-Z sensor interfaces; requires external nulling | Select LT1012CN8#PBF when picoampere bias, low power, or overcompensation capability is required |
| AD8628ARZ | Zero-drift architecture (0.005 µV/°C drift), lower noise (0.5 µVP-P), but only specified for 2.7–5.5 V single supply | Cannot replace LT1012CN8#PBF in ±1.2 V dual-supply or ±15 V industrial systems | Select LT1012CN8#PBF for dual-supply operation below ±2 V or where bipolar input stage is preferred for ESD robustness |
Compared with OP-07CP and AD8628ARZ, the LT1012CN8#PBF uniquely combines guaranteed ±1.2 V dual-supply operation, picoampere input bias, and an overcompensation terminal - making it irreplaceable in low-voltage, high-impedance, capacitive-load-sensitive precision analog front-ends.
Availability
LT1012CN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, charge integration, low-frequency active filtering, bridge transducer conditioning, and precision reference buffering requiring stable component supply across industrial, test & measurement, and medical OEM programs.
Supply support for LT1012CN8#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision, power management, and RF applications.
The LT1012CN8#PBF belongs to Linear's legacy precision op amp product line, engineered specifically for applications demanding microvolt offset, picoampere bias, and low 1/f noise - such as metrology-grade instrumentation, scientific sensors, and calibration equipment.
FAQ
What is the maximum guaranteed input bias current for LT1012CN8#PBF over its operating temperature range?
The LT1012CN8#PBF guarantees ±35 pA maximum input bias current at 25°C and ±50 pA maximum over its full 0°C to 70°C operating temperature range. This specification is validated per Linear Technology's production test flow and applies to the CN8 package variant with plastic DIP construction and standard die lot screening.
Can LT1012CN8#PBF operate from a single +2.4 V supply?
No - the LT1012CN8#PBF requires dual supplies (e.g., ±1.2 V) or asymmetric rails (e.g., +2.4 V and 0 V), but its input common-mode and output swing ranges are specified relative to both V+ and V–. Operation from a single 2.4 V rail would violate the minimum ±1.2 V symmetric supply requirement and result in undefined behavior or failure to meet guaranteed specs.
Does LT1012CN8#PBF require external frequency compensation?
No - the LT1012CN8#PBF is internally compensated for unity-gain stability and requires no external compensation components in standard configurations. However, Pin 5 (Overcompensation) supports optional external capacitor connection to improve phase margin for capacitive loads >100 pF or narrow noise bandwidth in integrator applications.
What is the purpose of Pins 1 and 8 on LT1012CN8#PBF?
Pins 1 and 8 are the offset null terminals of the LT1012CN8#PBF. They connect to opposite ends of a 5 kΩ to 100 kΩ potentiometer (wiper to V–) to adjust input offset voltage over a ±800 µV range. This allows fine-tuning of system-level DC error in applications like precision DAC output amplifiers or bridge amplifiers where residual offset must be minimized.
Is LT1012CN8#PBF pin-compatible with OP-07CP in an 8-pin DIP socket?
Yes - the LT1012CN8#PBF uses the same 8-pin PDIP footprint and pinout as OP-07CP (Pin 1: Offset Null (–), Pin 2: –IN, Pin 3: +IN, Pin 4: V–, Pin 5: Overcompensation, Pin 6: Output, Pin 7: V+, Pin 8: Offset Null (+)), enabling direct socket replacement without PCB modification. External nulling components may be omitted due to internal trimming.
LT1012CN8#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:
- 30 pA
- Voltage - Input Offset:
- 10 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
LT1012CN8#PBF FAQ
1.How can I place an order for LT1012CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1012CN8#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 LT1012CN8#PBF reliable?
The price and inventory of LT1012CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1012CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1012CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1012CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1012CN8#PBF?
LT1012CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1012CN8#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 LT1012CN8#PBF?
For technical support, including LT1012CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1012CN8#PBF requirements.
6.How does Aetrix verify that LT1012CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1012CN8#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 LT1012CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1012CN8#PBF?
All LT1012CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1012CN8#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 LT1012CN8#PBF part is unused and in its original packaging.
Return procedure for LT1012CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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