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Texas Instruments OPA2227MDREP
- Part No.:
- OPA2227MDREP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2227MDREP.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
OPA2227MDREP from Texas Instruments is a high-precision, low-noise dual operational amplifier in SOIC-8 packaging, delivering 3 nV/√Hz input voltage noise, 8 MHz gain bandwidth, and 2.3 V/µs slew rate. It operates across ±2.5 V to ±18 V supplies and is specified for –55°C to 125°C, making it suitable for defense-grade data acquisition and spectral analysis systems requiring simultaneous AC fidelity and DC accuracy.
For engineers reviewing the OPA2227MDREP datasheet, OPA2227MDREP pinout, OPA2227MDREP application, or OPA2227MDREP equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and two confirmed alternative parts with documented functional and parametric differences - all aligned to TI's SBOS594A revision November 2012 production data.
Technical Context
The OPA2227MDREP implements a bipolar-input, unity-gain-stable op amp architecture optimized for precision analog signal conditioning. Its laser-trimmed input stage achieves 100 µV max offset voltage at 25°C and 0.1 µV/°C typical drift, while internal bias current cancellation yields ≤10 nA max input bias current over temperature.
It features high open-loop gain (160 dB typ), 138 dB CMRR, and robust capacitive load drive capability up to 100 pF without instability. The device supports rail-to-rail output swing within 2 V of rails at 10 kΩ load and maintains 5 µs 0.1% settling time for 10-V steps - critical for high-fidelity instrumentation and active filter stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 3 nV/√Hz at 1 kHz - enables low-noise amplification of microvolt-level sensor signals without dominating source-referred noise. |
| Gain Bandwidth Product | 8 MHz - supports stable closed-loop operation up to 10× gain with usable bandwidth >700 kHz. |
| Slew Rate | 2.3 V/µs - ensures faithful reproduction of fast transients in audio and vibration analysis without slew-induced distortion. |
| Input Offset Voltage | ±100 µV max at 25°C - reduces dc error in precision integrators, strain gauge bridges, and thermopile amplifiers. |
| Supply Voltage Range | ±2.5 V to ±18 V - accommodates wide dynamic range in industrial power supply control and geophysical equipment. |
| Operating Temperature | –55°C to 125°C - qualified for extended-life deployment in aerospace avionics and downhole oilfield electronics. |
| CMRR | 138 dB typical - rejects common-mode interference in noisy environments such as telecom base stations and motor drives. |
Pinout & Package
OPA2227MDREP is housed in an SOIC-8 (D package) with 1.27 mm lead pitch and 1.75 mm maximum height, compliant with JEDEC MS-012AA. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +In A | Noninverting input for amplifier A - connects to high-impedance sensor nodes or reference dividers with minimal loading. |
| 2 | –In A | Inverting input for amplifier A - used for feedback network attachment or summing junctions in precision configurations. |
| 3 | Out A | Output of amplifier A - drives loads ≥10 kΩ directly; requires external isolation for >100 pF capacitive loads. |
| 4 | V– | Negative supply rail - must be decoupled with 0.1 µF ceramic capacitor placed ≤5 mm from pin to minimize PSRR degradation. |
| 5 | V+ | Positive supply rail - shares same decoupling requirement as V–; asymmetric supplies (e.g., +25 V/–5 V) are supported. |
| 6 | –In B | Inverting input for amplifier B - electrically isolated from channel A; channel separation >110 dB at 1 kHz ensures crosstalk immunity. |
| 7 | +In B | Noninverting input for amplifier B - matches A-channel input characteristics for matched dual-path designs like differential receivers. |
| 8 | Out B | Output of amplifier B - identical performance to Out A; allows independent gain staging or parallel output drive in headphone amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed input stage | Reduces initial offset error to ±100 µV max and minimizes thermal drift dependency in long-term monitoring systems. |
| Bipolar input architecture | Delivers 3 nV/√Hz voltage noise and 0.4 pA/√Hz current noise - optimal for source impedances <20 kΩ in spectral analyzers. |
| Controlled baseline manufacturing | Ensures consistent parametric distribution across military-temperature batches, supporting traceability for defense OEMs. |
| Extended product lifecycle support | Guarantees 10-year silicon operating life at 105°C junction temperature - critical for embedded systems with no field upgrade path. |
| Pin-for-pin replacement for OP-27 | Enables drop-in upgrades in legacy designs while improving noise, bandwidth, and temperature range without PCB modification. |
Applications
| Geophysical Signal Conditioning | Vibration Analysis Front-End |
|---|---|
Use Scenario: Amplifying low-amplitude seismic transducer outputs buried in environmental noise. IC Role / Device Role / Timing Role: Primary low-noise preamplifier stage with 100× gain and 10 Hz–1 kHz bandpass filtering. Use Value: 3 nV/√Hz noise floor preserves weak signal integrity; 138 dB CMRR rejects ground loop interference in distributed sensor arrays. |
Use Scenario: Capturing mechanical resonance signatures from accelerometers on rotating machinery. IC Role / Device Role / Timing Role: High-slew-rate buffer and anti-aliasing filter driver for 16-bit ADC sampling at 100 kSPS. Use Value: 2.3 V/µs slew rate prevents transient distortion; 5 µs 0.1% settling ensures accurate amplitude capture of shock pulses. |
| Professional Audio Line Driver | Power Supply Error Amplifier |
Use Scenario: Driving balanced line outputs in studio mixing consoles with minimal THD+N. IC Role / Device Role / Timing Role: Dual-channel output buffer with parallel configuration for ±30 mA drive capability. Use Value: 0.00005% THD+N at 1 kHz enables transparent audio reproduction; SOIC-8 footprint simplifies layout in dense PCBs. |
Use Scenario: Regulating high-accuracy programmable power supplies for test equipment. IC Role / Device Role / Timing Role: Precision error amplifier comparing DAC-set reference against sensed output voltage. Use Value: 160 dB open-loop gain ensures <1 ppm regulation error; ±18 V supply range supports ±15 V output rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2277MDREP | Higher offset drift (0.2 µV/°C vs. 0.1 µV/°C), lower noise (2.7 nV/√Hz), no specified military temp range. | Better for ultra-low-drift DC-coupled integrators; unsuitable for –55°C operation or high-speed settling-critical uses. | Select OPA2277MDREP only when sub-µV/°C drift dominates over bandwidth and temperature range requirements. |
| OPA2188AIDR | Zero-drift auto-zero architecture, 1.2 µV max offset, but lower GBW (2 MHz) and higher 1/f noise corner (~0.1 Hz). | Ideal for true DC precision (e.g., weigh scales), but cannot replace OPA2227MDREP in AC-coupled 10 kHz+ signal paths. | Choose OPA2188AIDR for pure DC stability; avoid where 8 MHz bandwidth or low broadband noise is mandatory. |
Compared with OPA2227MDREP, OPA2277MDREP trades military temperature qualification and speed for marginally better noise and drift, while OPA2188AIDR sacrifices bandwidth and AC performance for near-zero dc drift - making each viable only in narrowly defined design constraints.
Availability
OPA2227MDREP is available at Aetrix Electronics and suitable for defense electronics, aerospace instrumentation, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2227MDREP 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op amp design and space-grade reliability validation.
The OPA2227MDREP belongs to TI's Enhanced Product (EP) op amp family, engineered specifically for high-reliability applications in defense, aerospace, and medical systems where extended temperature operation and controlled baseline manufacturing are mandatory.
FAQ
What is the maximum operating temperature range for the OPA2227MDREP?
The OPA2227MDREP is fully specified and tested from –55°C to 125°C ambient temperature, with absolute maximum junction temperature rated at 150°C. This extended range is validated per MIL-PRF-38535 requirements and supports deployment in harsh-environment applications including satellite payload electronics and downhole drilling tools. Thermal derating curves in the SBOS594A datasheet confirm reliable operation across the full range.
Does the OPA2227MDREP require external offset nulling circuitry?
No, the OPA2227MDREP does not require external offset nulling. It uses laser trimming during wafer sort to achieve ±100 µV maximum input offset voltage at 25°C and ±250 µV over –55°C to 125°C. The datasheet explicitly states that most applications will not need external adjustment, and Figure 2 in the Application Information section confirms the absence of offset null pins in the SOIC-8 package.
Can the OPA2227MDREP drive capacitive loads without oscillation?
The OPA2227MDREP remains stable driving up to 100 pF capacitive loads with appropriate layout - verified by small-signal step response plots in Figure 15 of SBOS594A. For loads exceeding 100 pF, TI recommends isolating the output with a series resistor (e.g., 20–100 Ω) placed immediately at the op amp output pin, followed by the capacitive load, to maintain phase margin above 45°.
Is the OPA2227MDREP pin-compatible with standard OP-27 devices?
Yes, the OPA2227MDREP is a pin-for-pin replacement for the industry-standard OP-27, as confirmed in the datasheet Description section: "The OPA2227 operational amplifier is a pin-for-pin replacement for the industry standard OP-27 with substantial improvements across the board." Both use SOIC-8 packages with identical pin 1 location, terminal assignments, and footprint dimensions per JEDEC MS-012AA.
What is the quiescent current per amplifier channel in the OPA2227MDREP?
The OPA2227MDREP draws ±3.7 mA to ±3.95 mA quiescent current per amplifier at 25°C with ±5 V to ±15 V supplies, increasing to ±4.30 mA maximum over –55°C to 125°C. This value is measured under no-load conditions (IO = 0 A) and is specified in the Electrical Characteristics table on page 3 of SBOS594A - enabling accurate power budgeting for dual-channel precision systems.
OPA2227MDREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2.3V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 nA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 3.7mA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2227MDREP FAQ
1.How can I place an order for OPA2227MDREP through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2227MDREP 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 OPA2227MDREP reliable?
The price and inventory of OPA2227MDREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2227MDREP is usually 5 days.
3.What payment methods are accepted for OPA2227MDREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2227MDREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2227MDREP?
OPA2227MDREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2227MDREP 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 OPA2227MDREP?
For technical support, including OPA2227MDREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2227MDREP requirements.
6.How does Aetrix verify that OPA2227MDREP is sourced from the original manufacturer or authorized distributors?
All OPA2227MDREP 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 OPA2227MDREP meets industry standards.
7.What is the process for return or replacement of OPA2227MDREP?
All OPA2227MDREP units undergo pre-shipment inspection (PSI). If there is an issue with OPA2227MDREP, 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 OPA2227MDREP part is unused and in its original packaging.
Return procedure for OPA2227MDREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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