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Analog Devices Inc. LT1012ACS8#PBF
- Part No.:
- LT1012ACS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1012ACS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
LT1012ACS8#PBF from Analog Devices (acquired Linear Technology) is a precision operational amplifier optimized for ultra-low input bias current (±100 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 5 mA output current, and is internally compensated for unity-gain stability - ideal for charge integrators, thermocouple amplifiers, and high-impedance sensor interfaces.
For engineers reviewing the LT1012ACS8#PBF datasheet, LT1012ACS8#PBF pinout, LT1012ACS8#PBF application, or LT1012ACS8#PBF equivalent, key selection criteria include guaranteed picoampere input bias over temperature, 0.6 µV/°C max drift, 114 dB min CMRR/PSRR, ±13 V output swing into 10 kΩ, and SO-8 package compatibility with OP-07 socket replacements.
Technical Context
The LT1012ACS8#PBF employs a proprietary bipolar input stage with guarded p-n junctions to achieve <100 pA bias current across 0°C to 70°C, while maintaining microvolt offset via laser-trimmed thin-film resistors. Its internal compensation network ensures stable operation at unity gain without external components.
It features dual offset trim terminals (Pins 1 & 8) enabling ±800 µV adjustment range, and an overcompensation terminal (Pin 5) for capacitive load stabilization or noise bandwidth reduction - critical for photodiode transimpedance and precision logarithmic amplifier designs.
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 trimming. |
| Input Bias Current | ±100 pA max - preserves integrity of >1 GΩ source impedances in electrometer and piezoelectric sensor circuits. |
| Offset Drift | 0.6 µV/°C max - ensures <1 µV total drift over 0°C–70°C ambient, critical for unattended instrumentation. |
| Supply Current | 500 µA max - allows dual-cell (±1.2 V) battery operation with <1 mW dissipation. |
| CMRR / PSRR | 114 dB min - rejects common-mode noise from noisy industrial power rails and supply ripple. |
| Output Swing | ±13 V into 10 kΩ - delivers full dynamic range for ±15 V systems while driving moderate loads. |
| 0.1–10 Hz Noise | 0.5 µVP-P - supports DC-coupled measurements in strain gauge bridges and thermopile amplifiers. |
Pinout & Package
LT1012ACS8#PBF is housed in an 8-lead plastic SOIC (S8) package with JEDEC MS-012AC outline, 150 mil body width, and 1.27 mm pitch. Thermal resistance θJA = 170°C/W; maximum junction temperature = 100°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS Trim (−) | Connects to negative end of 5 kΩ–100 kΩ potentiometer for offset nulling. |
| 2 | Inverting Input (−IN) | High-impedance input node; guard ring required for pA-level leakage control. |
| 3 | Non-inverting Input (+IN) | Matched to Pin 2 for common-mode rejection; requires symmetric PCB layout. |
| 4 | V− | Negative supply rail connection; must be decoupled with 0.1 µF ceramic capacitor. |
| 5 | Overcompensation | Accepts capacitor (1–1000 pF) to reduce slew-induced instability with capacitive loads. |
| 6 | Output | Capable of sourcing/sinking 5 mA; short-circuit protected indefinitely. |
| 7 | V+ | Positive supply rail connection; decoupling mandatory for PSRR performance. |
| 8 | VOS Trim (+) | Connects to positive end of trim pot; forms adjustable voltage divider with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed ±1.2 V operation | Enables direct replacement of OP-07 in low-voltage portable instrumentation without redesign. |
| Picoampere bias over full temp range | Maintains <100 pA input current from 0°C to 70°C - essential for long-term stability in environmental sensors. |
| Internally compensated unity-gain stability | Eliminates need for external compensation components in follower and integrator configurations. |
| Trim-enabled offset adjustment | ±800 µV nulling range corrects system-level errors without adding op-amp stages. |
| 114 dB CMRR/PSRR minimum | Rejects interference from shared power domains in multi-channel data acquisition systems. |
Applications
| Charge Integrators | Thermocouple Amplifiers |
|---|---|
Use Scenario: Integrating current from radiation detectors or photodiodes over seconds to minutes. IC Role / Device Role / Timing Role: Precision integrator core with ultra-low input bias to prevent integration drift. Use Value: 100 pA max bias current limits integration error to <0.1% over 100 s at 1 nA input. | Use Scenario: Amplifying µV-level thermocouple outputs in industrial temperature controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise front-end amplifier with cold-junction compensation interface. Use Value: 0.6 µV/°C max drift ensures <0.05°C measurement uncertainty over 100°C span. |
| Low-Frequency Active Filters | Photodiode Sensor Interfaces |
Use Scenario: 0.1–10 Hz biomedical signal filtering (e.g., ECG, EEG). IC Role / Device Role / Timing Role: High-Q, low-noise filter section with minimal 1/f noise contribution. Use Value: 0.5 µVP-P 0.1–10 Hz noise avoids masking sub-µV physiological signals. | Use Scenario: Transimpedance amplification of photodiode current in optical encoders. IC Role / Device Role / Timing Role: Low-bias, low-noise TIA with guard-driven input for dark-current suppression. Use Value: <100 pA bias prevents saturation in high-gain (>1 MΩ) configurations with low-light signals. |
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 supply current (1.8 mA vs. 500 µA), higher offset drift (1.2 µV/°C vs. 0.6 µV/°C), no overcompensation pin. | Not suitable for battery-powered or ultra-low-drift applications; lacks capacitive load stabilization capability. | Select LT1012ACS8#PBF when picoampere bias, microvolt drift, or low-power operation is required. |
| LTC2050CS8#PBF | Zero-drift architecture (0.015 µV/°C), lower noise (0.25 µVP-P), but higher supply current (1.1 mA) and no overcompensation pin. | Better for DC-coupled zero-drift applications; unsuitable where overcompensation is needed for capacitive loads. | Choose LT1012ACS8#PBF for legacy OP-07 drop-in replacement with overcompensation support and lower quiescent current. |
Compared with OP-07DP and LTC2050CS8#PBF, LT1012ACS8#PBF uniquely balances ultra-low bias current, microvolt offset, low drift, and overcompensation flexibility - making it optimal for charge-integration, thermocouple, and low-power precision analog front-ends where both pA-level inputs and capacitive load drive matter.
Availability
LT1012ACS8#PBF is available at Aetrix Electronics and suitable for charge integrators, thermocouple amplifiers, and low-frequency active filters requiring stable component supply, long-term calibration retention, and consistent parametric performance across production lots.
Supply support for LT1012ACS8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1012 product line was originally developed by Linear Technology (acquired by ADI in 2017) to deliver OP-07-class precision with significantly lower power and superior input characteristics - targeting high-impedance, low-drift, and battery-operated instrumentation.
FAQ
What is the maximum operating temperature range for LT1012ACS8#PBF?
The LT1012ACS8#PBF is rated for 0°C to 70°C ambient operation. Its SO-8 package has a maximum junction temperature of 100°C and thermal resistance θJA = 170°C/W. Derating is required above 70°C ambient; operation beyond this range is not guaranteed per datasheet specifications.
Can LT1012ACS8#PBF replace OP-07 in existing designs without layout changes?
Yes - LT1012ACS8#PBF is pin-compatible with OP-07 in SO-8 packages and can be inserted directly into OP-07 sockets. External nulling components may be removed, and no PCB modifications are needed. However, verify that ±1.2 V minimum supply compliance meets system requirements.
Does LT1012ACS8#PBF require external frequency compensation?
No - LT1012ACS8#PBF is internally compensated for unity-gain stability. External compensation is unnecessary for standard configurations. The overcompensation terminal (Pin 5) is optional and used only to improve capacitive load handling or narrow noise bandwidth.
How is offset voltage trimmed on LT1012ACS8#PBF?
LT1012ACS8#PBF provides dedicated offset trim terminals (Pins 1 and 8). A 5 kΩ to 100 kΩ potentiometer is connected between these pins, with its wiper grounded. Adjusting the potentiometer varies the offset voltage over a ±800 µV range, enabling precise system-level nulling.
What is the typical 0.1 Hz to 10 Hz noise performance of LT1012ACS8#PBF?
The LT1012ACS8#PBF delivers 0.5 µVP-P typical noise in the 0.1 Hz to 10 Hz band. This value is guaranteed across production lots and is critical for DC-coupled, low-frequency applications such as thermocouple amplification and precision weighing systems.
LT1012ACS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1012ACS8#PBF FAQ
1.How can I place an order for LT1012ACS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1012ACS8#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 LT1012ACS8#PBF reliable?
The price and inventory of LT1012ACS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1012ACS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1012ACS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1012ACS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1012ACS8#PBF?
LT1012ACS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1012ACS8#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 LT1012ACS8#PBF?
For technical support, including LT1012ACS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1012ACS8#PBF requirements.
6.How does Aetrix verify that LT1012ACS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1012ACS8#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 LT1012ACS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1012ACS8#PBF?
All LT1012ACS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1012ACS8#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 LT1012ACS8#PBF part is unused and in its original packaging.
Return procedure for LT1012ACS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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