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Texas Instruments OPA4277MDTEP
- Part No.:
- OPA4277MDTEP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4277MDTEP.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:280
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Product details
Overview
OPA4277MDTEP from Texas Instruments is a radiation-hardened, high-precision quad operational amplifier designed for defense, aerospace, and medical instrumentation. It delivers ultra-low offset voltage (±20 µV max), ultra-low drift (±0.15 µV/°C max), high open-loop gain (134 dB), 140 dB CMRR, and operates from ±2 V to ±18 V supplies - enabling precision transducer signal conditioning in harsh-environment analog front-ends.
For engineers reviewing the OPA4277MDTEP datasheet, OPA4277MDTEP pinout, OPA4277MDTEP application, or OPA4277MDTEP equivalent, this page provides verified electrical specifications, SOIC-14 package layout guidance, real-world performance limits across –55°C to 125°C, and validated alternatives for high-reliability analog measurement systems requiring low drift, low noise, and guaranteed military-grade operation.
Technical Context
The OPA4277MDTEP implements a laser-trimmed, bipolar-input precision op amp architecture with fully independent amplifier sections - eliminating crosstalk and interaction even under overload or overdrive conditions. Its input stage uses internal bias current cancellation, removing the need for external compensation resistors and avoiding added offset or noise.
Unlike standard op amps specified at single supply voltages, the OPA4277MDTEP guarantees key parameters - including offset voltage, CMRR, PSRR, and AOL - across the full ±5 V to ±15 V operating range, with stable unity-gain performance and no phase inversion. Thermal design is supported by documented RθJA = 66.3°C/W and mandatory exposed-pad soldering per TI layout guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±20 µV max at 25°C - enables sub-10 ppm accuracy in 16-bit+ measurement systems without trimming. |
| Offset Drift | ±0.15 µV/°C max - ensures <±1.5 µV total drift over –55°C to 125°C, critical for unattended field instrumentation. |
| CMRR | 140 dB min - rejects >100 dB of common-mode interference in bridge and thermocouple amplifiers. |
| Open-Loop Gain | 134 dB typical - supports <0.0002% gain error in closed-loop configurations up to G = 1000. |
| Supply Range | ±2 V to ±18 V - allows direct interface with legacy ±15 V industrial rails and modern low-voltage sensor interfaces. |
| Quiescent Current | 800 µA per amplifier - enables four-channel precision amplification in battery-powered instruments with <3.2 mA total IQ. |
| Input Bias Current | ±2.8 nA max at 25°C - eliminates need for bias cancellation resistors, reducing PCB area and noise sources. |
Pinout & Package
OPA4277MDTEP is housed in a 14-pin SOIC (D) package with 3.91 mm × 8.65 mm body size, 1.75 mm max height, and exposed thermal pad requiring PCB soldering for reliability in thermal cycling environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Low-impedance buffered output capable of ±1.5 V swing into 2 kΩ load at ±15 V supply. |
| 2 (–IN A) | Inverting input A | Differential input node; internally compensated for bias current - no external resistor required. |
| 3 (+IN A) | Noninverting input A | High-impedance input (250 GΩ || 3 pF); sensitive to thermoelectric EMFs - requires matched thermal layout. |
| 4 (V+) | Positive supply rail | Accepts +2 V to +18 V; decoupling capacitor (0.1 µF) required near pin for noise immunity. |
| 5 (+IN B) | Noninverting input B | Independent input for second amplifier; identical specs and layout rules as +IN A. |
| 6 (–IN B) | Inverting input B | Independent inverting input; fully isolated from other channels to prevent crosstalk (>115 dB at DC). |
| 7 (OUT B) | Amplifier B output | Unity-gain stable output; supports capacitive loads up to 1500 pF without oscillation. |
| 8 (OUT C) | Amplifier C output | Third independent output; same drive strength and settling time (16 µs @ 0.01%) as OUT A/B. |
| 9 (–IN C) | Inverting input C | Third channel inverting input; shares same low-bias-current architecture as all inputs. |
| 10 (+IN C) | Noninverting input C | Third channel noninverting input; laser-trimmed matching ensures channel-to-channel offset <0.5 µV. |
| 11 (V–) | Negative supply rail | Accepts –2 V to –18 V; must be decoupled independently from V+ to suppress supply coupling. |
| 12 (+IN D) | Noninverting input D | Fourth amplifier input; supports simultaneous multi-sensor acquisition with <0.1 µV/V channel separation. |
| 13 (–IN D) | Inverting input D | Fourth channel inverting input; fully differential operation enabled with matched external feedback networks. |
| 14 (OUT D) | Amplifier D output | Final output; maintains 126 dB AOL down to –55°C, enabling cold-temperature precision calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset voltage | ±20 µV max eliminates need for manual nulling in production test fixtures and field-deployed sensors. |
| No external bias current resistor | Internally canceled input bias current avoids added thermal EMFs and Johnson noise from external components. |
| Guaranteed spec over ±5 V to ±15 V | Single performance limit across full military supply range simplifies design validation and reduces qualification testing. |
| Controlled baseline & extended life cycle | Fixed fabrication/assembly/test sites and extended PCN support ensure long-term supply continuity for defense programs. |
| Military temperature range | –55°C to 125°C operation with full parameter guarantee enables deployment in avionics, downhole tools, and space-qualified payloads. |
Applications
| Transducer Amplifier | Bridge Amplifier |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from pressure, force, or acceleration transducers in airborne telemetry units. IC Role / Device Role / Timing Role: Primary signal-conditioning stage providing gain, offset correction, and noise filtering before ADC sampling. Use Value: ±20 µV offset and ±0.15 µV/°C drift preserve <0.01% full-scale accuracy across flight temperature profiles without recalibration. |
Use Scenario: Reading Wheatstone bridge outputs from strain gauges in structural health monitoring systems on bridges and aircraft. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with matched gain-setting resistors and high CMRR rejection of common-mode cable noise. Use Value: 140 dB CMRR and 134 dB AOL enable >100 dB dynamic range in 24-bit delta-sigma ADC interfaces with minimal gain error. |
| Temperature Measurements | Battery Powered Instruments |
|
Use Scenario: Cold-junction compensation and linearization of Type J/K thermocouples in portable environmental analyzers. IC Role / Device Role / Timing Role: Precision integrator and reference buffer delivering stable excitation and low-drift amplification for microvolt-level signals. Use Value: 0.22 µVpp 0.1–10 Hz noise and <1 µV/V PSRR ensure <0.1°C measurement uncertainty over 10-year field deployment. |
Use Scenario: Signal conditioning in handheld multimeters, gas detectors, and portable ECG monitors with 10+ year shelf life. IC Role / Device Role / Timing Role: Quad-channel analog front-end supporting simultaneous voltage, current, temperature, and sensor diagnostics. Use Value: 800 µA/amplifier quiescent current enables >500 hours of continuous operation on two AA cells while maintaining 16-bit linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4188IDR | Zero-drift auto-zero architecture; 0.03 µV/°C drift vs OPA4277MDTEP's ±0.15 µV/°C; higher 1/f noise (0.3 µVpp). | Preferred for ultra-low-drift DC-coupled systems below 1 kHz; unsuitable for high-reliability military/aerospace due to lack of EP qualification. | Select OPA4188IDR only when drift dominates noise budget and MIL-PRF-38535 compliance is not required. |
| AD8629ARUZ | CMOS input; 1 pA bias current vs 2.8 nA; lower supply current (240 µA/amp); but only rated to 105°C, no radiation tolerance. | Suitable for commercial portable medical devices; lacks extended temperature range, controlled baseline, and defense-grade traceability. | Choose AD8629ARUZ for cost-sensitive, non-military battery-powered designs where input impedance >1 TΩ is essential. |
Compared with OPA4277MDTEP, OPA4188IDR offers superior drift but sacrifices radiation hardness and military temperature rating, while AD8629ARUZ trades off reliability and temperature range for ultra-low bias current and power - making OPA4277MDTEP the sole choice for mission-critical analog signal chains requiring guaranteed performance from –55°C to 125°C with full documentation traceability.
Availability
OPA4277MDTEP is available at Aetrix Electronics and suitable for defense electronics, aerospace avionics, and medical diagnostic equipment requiring stable component supply across extended product lifecycles and extreme environmental conditions.
Supply support for OPA4277MDTEP 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 company specializing in analog and embedded processing technologies, with leadership in high-reliability analog ICs for industrial, automotive, and aerospace markets.
The OPA4277MDTEP belongs to TI's Enhanced Product (EP) family - engineered for extended temperature operation, controlled manufacturing baselines, and long-term availability specifically for defense, space, and medical applications where failure is not an option.
FAQ
What is the maximum operating temperature range for the OPA4277MDTEP?
The OPA4277MDTEP is fully specified and guaranteed over –55°C to +125°C ambient temperature. All key parameters - including offset voltage, CMRR, PSRR, and open-loop gain - are tested and binned across this full military temperature range, ensuring reliable operation in avionics, downhole tools, and space-qualified payloads without derating.
Does the OPA4277MDTEP require external offset nulling components?
No. The OPA4277MDTEP is laser-trimmed during production to achieve ±20 µV maximum input offset voltage at 25°C, and its ultra-low drift (±0.15 µV/°C) makes user adjustment unnecessary in most precision applications. External trim circuitry is omitted from the recommended layout to avoid introducing thermal EMFs or noise that would degrade the inherent performance of the OPA4277MDTEP.
Is the OPA4277MDTEP pin-compatible with the standard OPA4277?
Yes. The OPA4277MDTEP uses the same SOIC-14 (D) package, identical pinout, and electrically compatible interface as the commercial OPA4277. However, the MDTEP variant adds enhanced product qualifications - including extended temperature screening, controlled baseline manufacturing, and radiation tolerance - making it suitable for mission-critical applications where the standard part is not approved.
What is the recommended power supply decoupling for the OPA4277MDTEP?
TI specifies 0.1 µF ceramic capacitors placed as close as possible to both V+ (pin 4) and V– (pin 11), with short traces to the ground plane. For systems with noisy or high-impedance supplies, adding a 10 µF tantalum or aluminum electrolytic capacitor in parallel improves low-frequency stability. This decoupling is essential to maintain the OPA4277MDTEP's 130 dB PSRR and prevent supply-induced errors in precision measurements.
Can the OPA4277MDTEP drive capacitive loads without instability?
Yes. The OPA4277MDTEP is unity-gain stable and characterized to drive up to 1500 pF capacitive loads without oscillation or excessive overshoot, as confirmed in Figure 18 of the SBOS714 datasheet. For loads exceeding 1500 pF, TI recommends isolating the amplifier output with a small series resistor (e.g., 10–50 Ω) to maintain phase margin while preserving DC accuracy - a technique validated in OPA4277MDTEP application circuits.
OPA4277MDTEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SOIC
OPA4277MDTEP FAQ
1.How can I place an order for OPA4277MDTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4277MDTEP 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 OPA4277MDTEP reliable?
The price and inventory of OPA4277MDTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4277MDTEP is usually 5 days.
3.What payment methods are accepted for OPA4277MDTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4277MDTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4277MDTEP?
OPA4277MDTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4277MDTEP 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 OPA4277MDTEP?
For technical support, including OPA4277MDTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4277MDTEP requirements.
6.How does Aetrix verify that OPA4277MDTEP is sourced from the original manufacturer or authorized distributors?
All OPA4277MDTEP 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 OPA4277MDTEP meets industry standards.
7.What is the process for return or replacement of OPA4277MDTEP?
All OPA4277MDTEP units undergo pre-shipment inspection (PSI). If there is an issue with OPA4277MDTEP, 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 OPA4277MDTEP part is unused and in its original packaging.
Return procedure for OPA4277MDTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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