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Analog Devices Inc. OP27-001C
- Part No.:
- OP27-001C
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
OP27-001C.pdf
- Description:
- DIE ON FILM FRAME
- Quantity:
- Payment:
- Shipping:
Inventory:3,345
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Product details
Overview
OP27-001C from Maxim Integrated is a precision operational amplifier with 0.1 μV/°C input offset voltage drift, 2.8 μV maximum input offset voltage, and 8 MHz gain-bandwidth product, used in high-accuracy analog signal conditioning for industrial sensor interfaces and precision instrumentation.
For engineers reviewing the OP27-001C datasheet, OP27-001C pinout, OP27-001C application, or OP27-001C equivalent, key selection criteria include low drift over temperature, low noise density (3 nV/√Hz), rail-to-rail output swing capability, and compatibility with ±15 V supply rails in legacy test equipment designs.
Technical Context
The OP27-001C employs a bipolar input stage optimized for low offset and drift, with internal compensation enabling stable unity-gain operation. It delivers 2.8 V/μs slew rate and supports common-mode input range extending to within 2 V of the negative rail.
Designed for DC-critical applications, it features 120 dB open-loop gain and 110 dB power supply rejection ratio at DC, ensuring minimal error contribution from supply variations in precision integrators and low-frequency amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 2.8 μV max - enables sub-10 ppm accuracy in 10 V full-scale measurement systems without trimming |
| Offset Drift | 0.1 μV/°C - maintains <1 μV total drift over 0°C to 70°C industrial temperature range |
| Gain-Bandwidth Product | 8 MHz - supports stable closed-loop gain ≥10 at 500 kHz for anti-aliasing filter drivers |
| Slew Rate | 2.8 V/μs - allows 10 Vpp output at 45 kHz without distortion in precision waveform generation |
| Supply Voltage Range | ±4.5 V to ±18 V - compatible with legacy ±15 V industrial power rails and ±5 V mixed-signal systems |
| Input Noise Density | 3 nV/√Hz at 1 kHz - limits added noise to <1.5 μV RMS in 10 Hz–10 kHz bandwidth sensor front-ends |
Pinout & Package
OP27-001C is supplied in an 8-pin plastic DIP package (0.300" wide) with standard dual-opamp pinout configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null | Connects to external potentiometer for manual input offset trimming |
| 2 | Inverting Input | Differential input node with 10⁶ Ω typical input resistance and 1 pF capacitance |
| 3 | Non-Inverting Input | Differential input node matched to Pin 2 for common-mode rejection |
| 4 | V− | Negative supply connection; supports operation down to −18 V |
| 5 | Offset Null | Second terminal for external nulling potentiometer |
| 6 | Output | Class-A output stage capable of ±10 mA drive into 2 kΩ load |
| 7 | V+ | Positive supply connection; supports operation up to +18 V |
| 8 | NC | No internal connection; must be left unconnected or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input offset drift | 0.1 μV/°C ensures long-term calibration stability in environmental test chambers |
| High open-loop gain | 120 dB minimizes gain error in closed-loop configurations with gain ≥100 |
| Low 1/f noise corner | 10 Hz - preserves signal integrity in DC-coupled strain gauge amplifiers |
| Internal frequency compensation | Enables stable operation at unity gain without external components |
| High PSRR | 110 dB at DC reduces sensitivity to ripple on ±15 V supplies in benchtop instruments |
Applications
| Strain Gauge Signal Conditioning | High-Resolution DAC Output Buffer |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs in load cell interfaces with 24-bit ADCs. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with gain = 1000. Use Value: 2.8 μV offset and 0.1 μV/°C drift limit total error to <0.005% FS over temperature. | Use Scenario: Buffering 16-bit DAC outputs in automated test equipment where monotonicity and settling time are critical. IC Role / Device Role / Timing Role: Low-drift, low-noise output driver maintaining linearity across full 0–10 V range. Use Value: 3 nV/√Hz noise and 2.8 V/μs slew rate ensure <1 LSB error and <1 μs settling to 0.0015%. |
| Thermocouple Cold-Junction Compensation | Legacy Benchtop Multimeter Front-End |
Use Scenario: Amplifying thermopile outputs and compensating for cold-junction reference errors in industrial temperature controllers. IC Role / Device Role / Timing Role: Low-drift differential amplifier with programmable gain for microvolt-level signals. Use Value: 0.1 μV/°C drift prevents >0.1°C measurement error over ambient temperature shifts. | Use Scenario: Input stage of discontinued Fluke 8840A-style multimeters requiring stable DC gain and low thermal EMF. IC Role / Device Role / Timing Role: High-impedance, low-drift buffer preceding auto-ranging attenuators and integrators. Use Value: 2.8 μV max offset and 120 dB open-loop gain support 7½-digit resolution in integration mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GP | Same die, plastic DIP-8 package, identical electrical specs; no factory trim for offset | Higher initial offset (25 μV typ) but same drift and noise performance | Acceptable where post-calibration is available and cost sensitivity outweighs initial accuracy |
| AD797ARZ | Lower noise (0.9 nV/√Hz), higher GBW (110 MHz), but higher offset drift (0.6 μV/°C) | Better for wideband applications; less suitable for pure DC stability requirements | Preferred when bandwidth >1 MHz is needed, but requires recalibration for drift-sensitive use cases |
Compared with OP27-001C, OP27GP offers identical long-term stability at lower initial accuracy, while AD797ARZ trades drift performance for bandwidth and noise-making OP27-001C optimal for legacy DC-precision systems where calibration infrastructure exists and bandwidth demand is ≤100 kHz.
Availability
OP27-001C is available at Aetrix Electronics and suitable for industrial sensor interfaces, legacy test equipment repair, and precision instrumentation requiring stable component supply under extended lifecycle management.
Supply support for OP27-001C 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
Maxim Integrated is a semiconductor company specializing in analog and mixed-signal ICs for industrial, communications, and computing applications.
The OP27-001C belongs to Maxim's precision op-amp product line, designed specifically for high-stability, low-drift DC signal conditioning in metrology-grade equipment and legacy industrial control systems.
FAQ
Is OP27-001C still in production?
No, OP27-001C is Not Recommended for New Designs due to discontinuation of its wafer process. It remains available through authorized distributors and Aetrix Electronics for legacy system support and repair. The OP27-001C datasheet is maintained for existing users, and Maxim does not plan new wafer runs. Customers designing new systems should evaluate alternatives like OP27GP or AD797ARZ.
What is the pinout configuration of OP27-001C?
The OP27-001C uses an 8-pin DIP package with standard dual-opamp pinout: Pin 1 and Pin 5 are offset null terminals, Pin 2 is inverting input, Pin 3 is non-inverting input, Pin 4 is V−, Pin 6 is output, Pin 7 is V+, and Pin 8 is NC. This matches industry-standard OP27 family layouts and allows direct substitution in existing PCB footprints designed for OP27 variants.
How does OP27-001C compare to OP27GP in terms of precision?
The OP27-001C features factory-trimmed input offset voltage (2.8 μV max), whereas OP27GP has untrimmed offset (25 μV typ). Both share identical 0.1 μV/°C drift, 3 nV/√Hz noise, and 8 MHz GBW. Thus, OP27-001C delivers superior initial accuracy for zero-calibration-sensitive applications, while OP27GP provides equivalent long-term stability at lower cost where post-manufacturing calibration is feasible.
Can OP27-001C operate on ±5 V supplies?
Yes, OP27-001C supports supply voltages from ±4.5 V to ±18 V. At ±5 V, it maintains full rail-to-rail output swing capability, 2.8 V/μs slew rate, and 120 dB open-loop gain. However, output voltage swing is reduced to ±3.5 V, and small-signal bandwidth decreases slightly to ~7.2 MHz due to lower internal bias currents-verified in the official QuickView datasheet for OP27-001C.
Why is OP27-001C marked "Not Recommended for New Designs"?
OP27-001C was manufactured using a wafer process that Maxim no longer supports, making future supply uncertain. While current stock is available, Maxim advises against new designs due to potential obsolescence risk. The OP27-001C datasheet remains published for legacy design validation, and Aetrix Electronics provides continuity support including traceable sourcing and lifecycle coordination for ongoing production needs.
OP27-001C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Push-Pull
- Slew Rate:
- 2.8V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -
- Grade:
- Military
- Qualification:
- MIL-STD-883
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
OP27-001C FAQ
1.How can I place an order for OP27-001C through Aetrix?
Please submit a Request for Quotation (RFQ) for OP27-001C 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 OP27-001C reliable?
The price and inventory of OP27-001C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP27-001C is usually 5 days.
3.What payment methods are accepted for OP27-001C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP27-001C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP27-001C?
OP27-001C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP27-001C 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 OP27-001C?
For technical support, including OP27-001C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP27-001C requirements.
6.How does Aetrix verify that OP27-001C is sourced from the original manufacturer or authorized distributors?
All OP27-001C 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 OP27-001C meets industry standards.
7.What is the process for return or replacement of OP27-001C?
All OP27-001C units undergo pre-shipment inspection (PSI). If there is an issue with OP27-001C, 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 OP27-001C part is unused and in its original packaging.
Return procedure for OP27-001C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP27-001C Tags
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