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Analog Devices Inc. LTC1051ACJ8
- Part No.:
- LTC1051ACJ8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LTC1051ACJ8.pdf
- Description:
- IC OPAMP ZER-DRIFT 2CIRC 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,255
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Product details
Overview
LTC1051ACJ8 from Analog Devices (acquired Linear Technology) is a dual precision zero-drift operational amplifier in an 8-lead CERDIP package, featuring 0.5µV max input offset voltage, 0.05µV/°C max offset drift, 1.5µVP-P (DC–10Hz) input noise, 2.5MHz gain bandwidth, and 4V/µs slew rate at 1mA supply current per amplifier. It enables high-resolution DC-coupled signal conditioning in thermocouple amplifiers and strain gauge interfaces.
For engineers reviewing the LTC1051ACJ8 datasheet, LTC1051ACJ8 pinout, LTC1051ACJ8 application, or LTC1051ACJ8 equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in instrumentation, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The LTC1051ACJ8 employs chopper-stabilized architecture with integrated on-chip sample-and-hold capacitors-eliminating external capacitors required by competing chopper op amps. Its internal 3.3kHz sampling frequency enables ultra-low DC errors while maintaining AC performance up to 2.5MHz.
It operates from ±2.375V to ±8V total supply (±4.75V to ±16V single-supply compatible), supports rail-to-rail output swing down to ground, and features input common-mode range extending to V–. Overload recovery is 1.5ms (positive saturation) and 3ms (negative saturation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±0.5µV max - enables sub-microvolt DC accuracy without trimming in precision sensor front-ends. |
| Offset Drift | ±0.05µV/°C max - ensures stable baseline over industrial temperature range (–40°C to +85°C). |
| Input Noise (DC–10Hz) | 1.5µVP-P typical - supports high-resolution data acquisition with <1µV RMS error in slow-sampling systems. |
| Gain Bandwidth Product | 2.5MHz - provides sufficient bandwidth for anti-aliasing filters and low-frequency active RC stages. |
| Slew Rate | 4V/µs - allows fast settling of step inputs in closed-loop configurations with moderate gain. |
| Supply Current per Op Amp | 1mA max - enables dual-channel precision amplification within tight power budgets (e.g., battery-powered instruments). |
| CMRR | 114dB min - rejects common-mode interference in bridge-based transducer circuits. |
Pinout & Package
Package: 8-lead CERDIP (J8), hermetically sealed ceramic dual-in-line, 0.300" wide, lead pitch 0.100", operating temperature range –40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads ≥10kΩ to ±4.85V swing with ±5V supplies. |
| 2 | –IN A | Inverting input of Amplifier A - high-impedance node (±15pA bias current); requires guarding for picoampere-level accuracy. |
| 3 | +IN A | Non-inverting input of Amplifier A - same bias current spec as Pin 2; referenced to V– for ground-sensing applications. |
| 4 | V– | Negative supply rail - must be connected to system ground or negative rail; input common-mode extends to this pin. |
| 5 | V+ | Positive supply rail - accepts +4.75V to +16V in single-supply mode or ±2.375V to ±8V in dual-supply mode. |
| 6 | OUT B | Amplifier B output - electrically identical to Pin 1; enables dual-channel signal processing without cross-talk. |
| 7 | –IN B | Inverting input of Amplifier B - independent of Amplifier A; supports differential or independent channel use. |
| 8 | +IN B | Non-inverting input of Amplifier B - fully isolated from Amplifier A inputs; enables dual instrumentation front-ends. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip sample-and-hold capacitors | Eliminates need for external 10nF–100nF hold capacitors - reduces PCB area, cost, and layout sensitivity in chopper designs. |
| Input common-mode range includes V– | Enables direct connection to grounded sensors (e.g., thermocouples, RTDs) without level-shifting circuitry. |
| Output swings to ground | Supports single-supply operation with true 0V output capability - critical for interfacing with ADCs with 0V reference. |
| 100× faster overload recovery vs. external-capacitor choppers | 3ms recovery from negative saturation enables rapid settling after overvoltage events in protection circuits. |
| Pin-compatible with industry-standard dual op amps | Direct drop-in replacement for LM358, OP27, and similar 8-pin DIP/CERDIP dual op amps - no PCB redesign needed. |
Applications
| Thermocouple Amplifiers | Electronic Scales |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K/J thermocouples across –50°C to +1000°C ranges. IC Role / Device Role / Timing Role: Precision DC-coupled first-stage amplifier with sub-µV offset and near-zero drift to preserve absolute temperature accuracy. Use Value: Enables ±0.1°C measurement accuracy without calibration, leveraging 0.5µV offset and 0.05µV/°C drift specs. |
Use Scenario: Conditioning mV outputs from 350Ω strain-gauge load cells in platform scales and industrial weighbridges. IC Role / Device Role / Timing Role: Dual-channel instrumentation front-end providing matched gain and offset correction for ratiometric bridge excitation. Use Value: Delivers 1.5µVP-P (DC–10Hz) noise floor and 114dB CMRR to resolve <0.001% full-scale weight changes. |
| Medical Instrumentation | High Resolution Data Acquisition |
|
Use Scenario: Biopotential signal conditioning (ECG, EEG) requiring DC stability, low noise, and immunity to electrode half-cell drift. IC Role / Device Role / Timing Role: Ultra-low-drift, low-noise amplifier in analog front-end (AFE) for patient-connected biosensors. Use Value: Maintains baseline integrity over hours via 0.05µV/°C drift and rejects motion artifacts using rail-to-rail output swing. |
Use Scenario: 24-bit sigma-delta ADC driver in portable multimeters and calibration standards requiring <1ppm linearity. IC Role / Device Role / Timing Role: Low-noise, low-distortion buffer and gain stage preceding precision ADCs with DC-coupled inputs. Use Value: Achieves <1µV RMS input-referred noise in 10Hz bandwidth - directly limiting quantization uncertainty in high-resolution systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ | Single-supply only (2.7–5.5V); 1µV offset; 0.005µV/°C drift; 0.5µVP-P noise (0.1–10Hz); SOIC-8 package. | Optimized for low-voltage battery-powered systems; lacks dual-channel integration and ±16V supply support. | Select when ultra-low drift (<0.01µV/°C) and single-supply operation below 5.5V are mandatory; accept higher cost and reduced voltage headroom. |
| OPA2189IDR | Zero-drift, 25µV offset (max); 0.005µV/°C drift; 5.2nV/√Hz wideband noise; 10MHz GBW; SOIC-8. | Better AC performance and lower wideband noise, but higher DC offset and no CERDIP hermetic option. | Choose for mixed-signal systems needing >1MHz bandwidth and low 1/f noise; avoid where hermetic sealing or sub-1µV offset is required. |
Compared with AD8628ARZ and OPA2189IDR, the LTC1051ACJ8 uniquely combines hermetic CERDIP packaging, ±16V supply capability, dual-channel integration, and guaranteed 0.5µV offset - making it irreplaceable in high-reliability, wide-supply, dual-amplifier instrumentation designs.
Availability
LTC1051ACJ8 is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, medical instrumentation, and high-resolution data acquisition requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for LTC1051ACJ8 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 its precision analog portfolio, including chopper-stabilized op amps renowned for ultra-low offset and drift.
The LTC1051 series was designed specifically for high-accuracy DC signal conditioning in sensor interfaces where thermal EMF and long-term drift dominate error budgets - targeting instrumentation, test equipment, and industrial control.
FAQ
What is the maximum operating temperature range for the LTC1051ACJ8?
The LTC1051ACJ8 is rated for operation from –40°C to +85°C, as indicated by the 'C' grade suffix in the part number. This industrial temperature range is validated per the Absolute Maximum Ratings table and applies to all electrical specifications unless otherwise noted. The J8 CERDIP package provides hermetic sealing suitable for harsh environments within this range.
Does the LTC1051ACJ8 require external capacitors for chopper stabilization?
No, the LTC1051ACJ8 integrates on-chip sample-and-hold capacitors, eliminating the need for external 10nF–100nF hold capacitors typically required by other chopper-stabilized op amps. This integration reduces board space, component count, and layout sensitivity - a key differentiator confirmed in the device description and typical application circuits.
Can the LTC1051ACJ8 operate from a single 5V supply?
Yes, the LTC1051ACJ8 supports single-supply operation from +4.75V to +16V. With a 5V supply (V+ = 5V, V– = GND), it delivers rail-to-rail output swing down to ground and accepts input signals down to V–, enabling direct interfacing with grounded sensors and low-voltage ADCs - as verified in the Electrical Characteristics table and Typical Performance Curves.
What is the internal sampling frequency of the LTC1051ACJ8?
The LTC1051ACJ8 has a nominal internal sampling frequency of 3.3kHz, as specified in the Electrical Characteristics table under "Internal Sampling Frequency." This value is confirmed across multiple graphs (G02, G03) showing sampling frequency vs. supply voltage and temperature, and directly impacts aliasing behavior in AC applications.
How does the LTC1051ACJ8 achieve overload recovery in under 3ms?
The LTC1051ACJ8 achieves 1.5ms (positive saturation) and 3ms (negative saturation) overload recovery through proprietary internal circuitry that rapidly resets the chopper's offset correction loop - a 100× improvement over chopper amplifiers relying on external hold capacitors. This performance is measured and guaranteed per the Electrical Characteristics table and illustrated in Figure G10.
LTC1051ACJ8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 1mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CERDIP
LTC1051ACJ8 FAQ
1.How can I place an order for LTC1051ACJ8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1051ACJ8 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 LTC1051ACJ8 reliable?
The price and inventory of LTC1051ACJ8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1051ACJ8 is usually 5 days.
3.What payment methods are accepted for LTC1051ACJ8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1051ACJ8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1051ACJ8?
LTC1051ACJ8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1051ACJ8 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 LTC1051ACJ8?
For technical support, including LTC1051ACJ8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1051ACJ8 requirements.
6.How does Aetrix verify that LTC1051ACJ8 is sourced from the original manufacturer or authorized distributors?
All LTC1051ACJ8 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 LTC1051ACJ8 meets industry standards.
7.What is the process for return or replacement of LTC1051ACJ8?
All LTC1051ACJ8 units undergo pre-shipment inspection (PSI). If there is an issue with LTC1051ACJ8, 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 LTC1051ACJ8 part is unused and in its original packaging.
Return procedure for LTC1051ACJ8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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