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Texas Instruments OPA2277MDTEP
- Part No.:
- OPA2277MDTEP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2277MDTEP.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
OPA2277MDTEP from Texas Instruments is a high-precision, low-noise dual operational amplifier designed for demanding analog signal conditioning in harsh environments. It delivers ultra-low offset voltage (±20 µV max), 134 dB open-loop gain, and 140 dB common-mode rejection over –55°C to 125°C - enabling accurate bridge and transducer amplification in aerospace-grade load cell interfaces.
For engineers reviewing the OPA2277MDTEP datasheet, OPA2277MDTEP pinout, OPA2277MDTEP application, or OPA2277MDTEP equivalent, this device supports precision DC-coupled measurement chains requiring stable offset drift (<0.15 µV/°C), rail-to-rail output swing (±1.5 V from rails), and immunity to phase inversion under overload - critical for defense and medical instrumentation.
Technical Context
The OPA2277MDTEP employs a laser-trimmed bipolar input stage with internal bias current cancellation, eliminating need for external compensation resistors. Its unity-gain stability and 1 MHz gain-bandwidth product support wideband precision amplification without external compensation.
Specified across ±5 V to ±15 V supplies with single-limit performance guarantees, it maintains 126 dB minimum open-loop gain and <0.002% THD+N at 1 kHz - enabling high-fidelity signal integrity in battery-powered test equipment and isolated sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±20 µV max - enables sub-10 ppm accuracy in 10 V full-scale bridge measurements without trimming |
| Open-Loop Gain | 134 dB typ - ensures <0.0005% gain error in closed-loop configurations with G ≥ 10 |
| CMRR | 140 dB min - rejects >100 dB of common-mode noise in unshielded industrial wiring |
| Supply Range | ±2 V to ±18 V - supports asymmetric rails (e.g., +25 V/–5 V) in mixed-signal systems |
| Quiescent Current | 800 µA per amplifier - allows dual-channel precision amplification in 10-year battery-powered instruments |
| Input Bias Current | ±0.5 nA max - eliminates error from >10 MΩ source impedances in thermocouple circuits |
| Output Swing | (V–) + 1.5 V to (V+) – 1.5 V @ 2 kΩ - delivers 27 Vpp dynamic range on ±15 V supplies |
Pinout & Package
OPA2277MDTEP uses an SOIC-8 (D package) with 3.91 mm × 4.90 mm body size and exposed thermal pad. Pin 1 is top-left when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Drives 2 kΩ loads to within 1.5 V of rails; connects directly to ADC input or next-stage filter |
| 2 (–IN A) | Inverting input A | High-impedance node (250 GΩ || 3 pF); requires matched trace geometry to minimize thermoelectric offset |
| 3 (+IN A) | Non-inverting input A | Same impedance as Pin 2; used for differential sensing in load cell Wheatstone bridges |
| 4 (V–) | Negative supply | Accepts –2 V to –18 V; must be decoupled with 0.1 µF ceramic capacitor near pin |
| 5 (+IN B) | Non-inverting input B | Independent channel input; enables dual-sensor monitoring (e.g., temperature + strain) |
| 6 (–IN B) | Inverting input B | Electrically isolated from Channel A; crosstalk <0.1 µV/V ensures channel independence |
| 7 (OUT B) | Amplifier B output | Identical specs to OUT A; supports simultaneous dual-channel acquisition without interaction |
| 8 (V+) | Positive supply | Accepts +2 V to +18 V; shares decoupling cap with V– but requires separate 0.1 µF path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset drift | ±0.15 µV/°C - maintains calibration stability over –55°C to 125°C without recalibration |
| Internal bias current cancellation | Eliminates need for external Rcomp, reducing PCB area and thermal EMF errors in high-Z sensors |
| Overload recovery time | 3 µs - restores linear operation rapidly after input overdrive, preventing data loss in transient-rich environments |
| Input protection | ±30 V differential tolerance with 1 kΩ series resistors - survives ESD events and wiring faults without damage |
| Controlled baseline | Military-grade manufacturing (one fab/assembly/test site) ensures consistent parametric distribution across production lots |
Applications
| Transducer Amplifier | Bridge Amplifier |
|---|---|
Use Scenario: Amplifying mV-level outputs from pressure transducers in aircraft hydraulic monitoring systems. IC Role / Device Role / Timing Role: Dual-channel DC-coupled instrumentation amplifier front-end with independent gain paths. Use Value: 10 µV offset enables detection of <10 Pa pressure changes; 140 dB CMRR rejects engine vibration-induced common-mode noise. |
Use Scenario: Signal conditioning for quarter-bridge strain gages on structural health monitoring sensors. IC Role / Device Role / Timing Role: Precision difference amplifier converting ∆R/R into amplified voltage with minimal self-heating error. Use Value: 0.15 µV/°C drift prevents thermal zero-shift during diurnal temperature cycles; dual channels allow reference/active pair comparison. |
| Temperature Measurements | Load Cell Amplifier |
Use Scenario: Cold-junction compensation and linearization of Type J thermocouples in furnace controllers. IC Role / Device Role / Timing Role: Low-drift buffer and gain stage for thermocouple voltage, rejecting millivolt-level EMI. Use Value: 0.002% THD+N preserves microvolt-level thermocouple resolution; 134 dB AOL ensures stable 100× gain without oscillation. |
Use Scenario: High-accuracy weight measurement in military vehicle scale systems operating from –40°C to +85°C. IC Role / Device Role / Timing Role: Dual-opamp instrumentation configuration (gain = 1 + R2/R1) for full-bridge output amplification. Use Value: ±20 µV offset contributes <0.002% FS error at 10 mV/V sensitivity; 800 µA quiescent current extends battery life in portable calibrators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188AIDR | Zero-drift auto-zero architecture vs. laser-trimmed bipolar; 0.005 µV/°C drift vs. 0.15 µV/°C | Better long-term drift stability but higher 1/f noise (0.1 µVpp vs. 0.22 µVpp) limits use in low-frequency bridge apps | Select OPA2188AIDR only when drift dominates noise budget; OPA2277MDTEP preferred for <10 Hz bandwidths |
| AD8628ARZ | Chopper-stabilized design; 1 µV max offset vs. 20 µV; 2.5 MHz GBW vs. 1 MHz | Higher bandwidth suits fast-settling applications but chopper ripple (1.5 µVpp) corrupts ultra-low-noise DC measurements | Choose AD8628ARZ for >100 kHz signal paths; OPA2277MDTEP remains optimal for sub-100 Hz precision DC |
Compared with OPA2188AIDR and AD8628ARZ, OPA2277MDTEP provides superior 0.1–10 Hz noise performance and proven reliability in extended-temperature military deployments - making it the preferred choice for static and quasi-static sensor interfaces where spectral purity outweighs ultra-low drift.
Availability
OPA2277MDTEP is available at Aetrix Electronics and suitable for defense avionics, medical diagnostics, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2277MDTEP 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-amps and space-grade components.
The OPA2277MDTEP belongs to TI's high-reliability EP (Enhanced Product) line, engineered specifically for defense, aerospace, and medical applications demanding guaranteed performance from –55°C to 125°C and controlled manufacturing baselines.
FAQ
What is the maximum supply voltage rating for OPA2277MDTEP?
The OPA2277MDTEP has an absolute maximum supply voltage rating of 36 V total (i.e., V+ – V– ≤ 36 V), with recommended operating range from ±2 V to ±18 V. It supports asymmetric supplies such as +25 V/–5 V, enabling flexible power architecture in mixed-signal systems while maintaining full specification compliance across ±5 V to ±15 V.
Does OPA2277MDTEP require external offset nulling circuitry?
No - the OPA2277MDTEP is laser-trimmed to ±20 µV maximum input offset voltage, and its ultra-low drift (±0.15 µV/°C) makes external nulling unnecessary in most applications. Trim pins (1 and 8) are provided only for specialized cases requiring sub-µV adjustment; using them risks introducing additional thermal drift and is discouraged for standard deployments of OPA2277MDTEP.
How does OPA2277MDTEP handle input overvoltage conditions?
The OPA2277MDTEP features integrated 1-kΩ series input resistors and diode clamps that protect against ±30 V differential input overvoltage without damage. While overdrive may temporarily affect slewing behavior in unity-gain followers, the device recovers fully within 3 µs and retains all specifications - a key reliability feature for OPA2277MDTEP in field-deployed instrumentation.
What is the thermal resistance of OPA2277MDTEP in SOIC-8 package?
The OPA2277MDTEP in SOIC-8 (D package) has a junction-to-ambient thermal resistance (RθJA) of 91.9°C/W, junction-to-board (RθJB) of 40.6°C/W, and junction-to-case (top) of 39.9°C/W. Soldering the exposed thermal pad to a PCB copper pour is mandatory to achieve rated reliability - especially critical for OPA2277MDTEP in continuous 125°C operation.
Can OPA2277MDTEP drive capacitive loads without instability?
Yes - the OPA2277MDTEP is unity-gain stable and can safely drive up to 1500 pF capacitive loads, as verified in Figure 17 of the SBOS700 datasheet. For loads >1000 pF, small-series resistance (e.g., 10–50 Ω) between amplifier output and capacitance is recommended to suppress peaking, ensuring robust performance in OPA2277MDTEP-based filter and cable-driving applications.
OPA2277MDTEP 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:
- 0.8V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 790µA (x2 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2277MDTEP FAQ
1.How can I place an order for OPA2277MDTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2277MDTEP 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 OPA2277MDTEP reliable?
The price and inventory of OPA2277MDTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2277MDTEP is usually 5 days.
3.What payment methods are accepted for OPA2277MDTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2277MDTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2277MDTEP?
OPA2277MDTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2277MDTEP 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 OPA2277MDTEP?
For technical support, including OPA2277MDTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2277MDTEP requirements.
6.How does Aetrix verify that OPA2277MDTEP is sourced from the original manufacturer or authorized distributors?
All OPA2277MDTEP 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 OPA2277MDTEP meets industry standards.
7.What is the process for return or replacement of OPA2277MDTEP?
All OPA2277MDTEP units undergo pre-shipment inspection (PSI). If there is an issue with OPA2277MDTEP, 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 OPA2277MDTEP part is unused and in its original packaging.
Return procedure for OPA2277MDTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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