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Texas Instruments OPA180IDGKT
- Part No.:
- OPA180IDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA180IDGKT.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:535
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Product details
Overview
OPA180IDGKT from Texas Instruments is a single-channel, zero-drift operational amplifier optimized for precision DC-coupled signal conditioning in high-accuracy sensor interfaces and industrial measurement systems. It delivers 75 μV maximum input offset voltage, 0.1 μV/°C drift over –40°C to +125°C, 10 nV/√Hz input voltage noise at 1 kHz, rail-to-rail output swing within 250 mV of rails (RL = 10 kΩ), and operates from ±2 V to ±18 V supplies.
For engineers reviewing the OPA180IDGKT datasheet, OPA180IDGKT pinout, OPA180IDGKT application, or OPA180IDGKT equivalent, this device supports critical low-drift, low-noise analog front-ends where long-term stability, thermal robustness, and 12-bit+ settling performance are required - especially in bridge amplifiers, strain gauge readouts, and medical instrumentation.
Technical Context
The OPA180IDGKT implements TI's proprietary auto-zeroing architecture with dual chopper stages and notch filtering to cancel offset and 1/f noise while maintaining low broadband noise and stable AC performance. Its input stage includes RFI-filtered inputs and supports common-mode voltages extending to the negative rail.
This amplifier achieves 120 dB open-loop gain, 114 dB CMRR, and 126 dB PSRR across temperature, enabling high-precision closed-loop gain accuracy without trimming. It features 2 MHz gain-bandwidth product, 0.8 V/μs slew rate, and 30 μs 0.01% settling time for 10-V steps - confirming suitability for multiplexed precision data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV max - ensures ≤0.0075% gain error in unity-gain buffer at room temperature |
| Drift | 0.1 μV/°C - guarantees <1 μV total offset shift over full –40°C to +125°C range |
| Noise (0.1–10 Hz) | 250 nVPP - enables sub-μV resolution in slow-sampling applications like weigh scales |
| Input Bias Current | ±1.7 nA max - allows use with high-impedance sources (e.g., thermistors, pH electrodes) without significant error |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V single-supply) - supports wide industrial and automotive supply rails |
| Output Swing | Within 250 mV of rails (RL = 10 kΩ) - preserves dynamic range in low-voltage systems with rail-to-rail DACs or ADCs |
| Quiescent Current | 525 μA max per amplifier - balances ultra-low drift with power efficiency in battery-backed systems |
Pinout & Package
OPA180IDGKT is packaged in an 8-pin MSOP (DGK) package measuring 3.00 mm × 3.00 mm, with exposed pad for thermal enhancement and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply | Accepts up to +18 V; decoupling capacitor required near pin for stability |
| V− | Negative power supply | Accepts down to –18 V; referenced to system ground in single-supply configurations |
| +IN | Noninverting input | High-impedance node (10¹² Ω || 9.5 pF); supports rail-to-rail common-mode range including V− |
| −IN | Inverting input | Differential input pair node; matched to +IN for optimal CMRR and offset cancellation |
| OUT | Amplifier output | Rail-to-rail capable; drives ≥10 kΩ load with <360 mV headroom at 125°C |
| NC (Pins 1, 5, 8) | No internal connection | Not bonded; must remain unconnected or grounded per layout guidelines to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zeroing with dual chopper stages eliminates 1/f noise and reduces long-term drift to 0.1 μV/°C |
| RFI-filtered inputs | Integrated RC filtering suppresses >10 MHz RF interference without external components |
| Rail-to-rail output | Swings within 250 mV of supply rails under 10 kΩ load - maximizes usable signal range in low-voltage designs |
| High DC precision | 120 dB open-loop gain, 114 dB CMRR, and 126 dB PSRR ensure stable closed-loop accuracy across temperature and supply variation |
| MicroSIZE package | 3 mm × 3 mm MSOP-8 footprint saves >50% board area vs SOIC-8 while maintaining thermal performance (RθJA = 159.3°C/W) |
Applications
| Bridge Amplifiers | Strain Gauges |
|---|---|
Use Scenario: Amplifying low-level differential signals from Wheatstone bridges in load cells and pressure sensors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low offset drift to maintain calibration over temperature cycles. Use Value: Enables 16-bit effective resolution without recalibration - critical for electronic scales meeting OIML R76 Class III requirements. |
Use Scenario: Signal conditioning for metallic foil or semiconductor strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage that rejects common-mode thermal EMF and maintains linearity over –40°C to +85°C. Use Value: Delivers <0.01% nonlinearity error and <1 ppm/°C thermal zero shift - directly supporting ISO 17025-compliant test equipment. |
| Temperature Measurement | Medical Instrumentation |
Use Scenario: Linearizing and amplifying outputs from RTDs (e.g., Pt100) and thermistors in HVAC and process control. IC Role / Device Role / Timing Role: High-input-impedance buffer and programmable-gain stage with rail-to-rail output for ADC interfacing. Use Value: Achieves ±0.1°C accuracy over –40°C to +125°C using only passive component matching - no software correction needed. |
Use Scenario: Front-end amplification in ECG, EEG, and patient monitoring devices requiring FDA-grade signal fidelity. IC Role / Device Role / Timing Role: Low-noise, low-bias-current amplifier for biopotential signal acquisition with >100 dB SNR at 1 Hz. Use Value: Meets IEC 60601-2-27 immunity requirements via integrated RFI filtering and 125°C operation margin for sterilization environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA188IDBVR | Lower offset (25 μV max), lower drift (0.085 μV/°C), but higher quiescent current (1 mA) and no RFI filtering | Better DC accuracy for lab-grade instruments; less suitable for noisy industrial environments | Select OPA188IDBVR when absolute offset minimization outweighs EMI robustness and power budget constraints |
| LTC2057HMS8#PBF | Similar zero-drift architecture, 0.25 μV/°C drift, 1.5 nV/√Hz noise, but requires external compensation and lacks RFI filtering | Higher bandwidth (3 MHz) for fast-settling applications; less integrated for compact designs | Choose LTC2057HMS8#PBF when higher speed and ultra-low noise are prioritized over ease of layout and EMI immunity |
Compared with OPA180IDGKT, OPA188IDBVR improves DC precision at the cost of EMI resilience and power efficiency, while LTC2057HMS8#PBF trades integration and layout simplicity for higher bandwidth and lower noise - making OPA180IDGKT the balanced choice for ruggedized, space-constrained industrial sensing.
Availability
OPA180IDGKT is available at Aetrix Electronics and suitable for bridge amplifiers, strain gauge interfaces, and temperature measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA180IDGKT 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 innovation in precision amplifiers and signal-chain solutions.
The OPAx180 family was designed specifically for high-stability, low-drift industrial and medical measurement applications - emphasizing long-term accuracy, thermal robustness, and noise performance in harsh operating environments.
FAQ
What is the maximum operating temperature range for OPA180IDGKT?
The OPA180IDGKT is specified from –40°C to +125°C for both operating and storage conditions, validated per JEDEC JESD22-A108. This extended range supports deployment in automotive engine compartments, industrial PLCs, and outdoor environmental monitoring systems where ambient temperatures exceed standard commercial limits. The device maintains its 75 μV offset voltage and 0.1 μV/°C drift specification across this full range, as confirmed in the Electrical Characteristics table of the SBOS584E datasheet.
Does OPA180IDGKT support single-supply operation?
Yes, OPA180IDGKT supports true single-supply operation from 4 V to 36 V. Its input common-mode range extends to the negative rail (V−), and its rail-to-rail output swings within 250 mV of both supply rails under 10 kΩ load. This allows direct interfacing with unipolar sensors and single-rail ADCs without level-shifting circuitry - a key advantage in portable and battery-powered instrumentation using OPA180IDGKT.
What is the purpose of the NC pins on OPA180IDGKT?
OPA180IDGKT (DGK package) has three NC pins: Pins 1, 5, and 8. These pins have no internal silicon connection and must remain unconnected or tied to ground per TI layout recommendations to prevent parasitic coupling or EMI pickup. Unlike functional pins, they serve no electrical role - their presence accommodates die bonding and package mechanical integrity, not signal routing. Misconnecting them risks instability or increased noise in sensitive OPA180IDGKT circuits.
How does the RFI filtering in OPA180IDGKT improve system-level EMC performance?
The OPA180IDGKT integrates on-chip RFI filtering on both inputs, suppressing >10 MHz radio-frequency interference before it reaches the amplifier core. This eliminates the need for external RC filters in noisy environments (e.g., motor drives, switching power supplies), reducing bill-of-materials and PCB area while improving immunity to conducted and radiated emissions. Test data in Figure 24 of the SBOS584E datasheet shows >60 dB EMIRR rejection at 100 MHz - directly enhancing compliance with IEC 61000-4-3 and -4-6 standards in systems using OPA180IDGKT.
Can OPA180IDGKT drive capacitive loads without oscillation?
OPA180IDGKT is stable driving up to 1 nF capacitive loads without external compensation, as verified in the Electrical Characteristics table. For larger loads (e.g., ADC input capacitance + PCB trace), TI recommends adding a series resistor (25 Ω typical) between the OPA180IDGKT output and the load to isolate the capacitance. Figure 10 and Figure 11 in the SBOS584E datasheet confirm <5% overshoot with 100-pF loads - ensuring reliable settling behavior in multiplexed data acquisition systems using OPA180IDGKT.
OPA180IDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 450µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA180IDGKT FAQ
1.How can I place an order for OPA180IDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA180IDGKT 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 OPA180IDGKT reliable?
The price and inventory of OPA180IDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA180IDGKT is usually 5 days.
3.What payment methods are accepted for OPA180IDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA180IDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA180IDGKT?
OPA180IDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA180IDGKT 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 OPA180IDGKT?
For technical support, including OPA180IDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA180IDGKT requirements.
6.How does Aetrix verify that OPA180IDGKT is sourced from the original manufacturer or authorized distributors?
All OPA180IDGKT 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 OPA180IDGKT meets industry standards.
7.What is the process for return or replacement of OPA180IDGKT?
All OPA180IDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA180IDGKT, 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 OPA180IDGKT part is unused and in its original packaging.
Return procedure for OPA180IDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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