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Texas Instruments OPA180IDBVR
- Part No.:
- OPA180IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA180IDBVR.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
OPA180IDBVR 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 offset voltage, 0.1 μV/°C drift, 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. It is widely used in strain gauge amplifiers and electronic scales requiring stable gain and minimal thermal error.
For engineers reviewing the OPA180IDBVR datasheet, OPA180IDBVR pinout, OPA180IDBVR application, or OPA180IDBVR equivalent, key selection criteria include its guaranteed 0.1 μV/°C drift over –40°C to +125°C, low 525 μA quiescent current per amplifier, 2 MHz gain bandwidth, RFI-filtered inputs, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA180IDBVR employs TI's proprietary auto-zeroing architecture with dual chopper stages and notch filtering to continuously correct input offset and 1/f noise while maintaining low broadband noise. Its input stage includes EMI-hardened, RFI-filtered inputs and supports common-mode voltages extending to the negative rail.
It features a unity-gain-stable design with 2 MHz GBW, 0.8 V/μs slew rate, and 30 μs 0.01% settling time for 10-V steps-enabling accurate digitization in 16-bit+ data acquisition systems. The device maintains 114 dB CMRR and 126 dB PSRR across temperature, ensuring robust performance in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV max - ensures ≤0.003% gain error in 2.5 V full-scale 16-bit systems without calibration |
| Drift (dVIO/dT) | 0.1 μV/°C - limits offset drift to <1 μV over 10°C ambient change, critical for uncalibrated temperature measurement |
| Input Voltage Noise | 10 nV/√Hz @ 1 kHz - enables sub-μV resolution in low-frequency sensor front-ends (e.g., load cells) |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V) - supports dual-supply precision instrumentation and wide-input-range industrial sensors |
| Output Swing | 250 mV from rail (RL = 10 kΩ) - delivers >98% of supply range for maximum dynamic range into ADC drivers |
| Quiescent Current | 525 μA max - allows battery-powered portable test equipment with multi-hour runtime |
| CMRR | 114 dB - rejects >5 MV/V common-mode interference, essential in bridge amplifier configurations |
Pinout & Package
SOT-23-5 (DBV) package: 1.60 mm × 2.90 mm, surface-mount, moisture-sensitivity level 1 (MSL-1), rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplifier output | Delivers rail-to-rail voltage with 120 Ω open-loop output impedance; drives 10 kΩ loads with <360 mV drop at extremes |
| V– (Pin 2) | Negative power supply | Reference for internal biasing; accepts ground in single-supply mode; supports common-mode input down to this rail |
| +IN (Pin 3) | Noninverting input | High-impedance (10¹² Ω || 9.5 pF) node; RFI-filtered for immunity to 100 MHz+ noise in industrial settings |
| –IN (Pin 4) | Inverting input | Differential input node; matched to +IN for optimal CMRR; enables precision transimpedance and difference amplifier topologies |
| V+ (Pin 5) | Positive power supply | Accepts up to ±20 V absolute max; powers internal auto-zero circuitry and output stage; decoupling required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Continuous auto-zeroing eliminates thermal drift and 1/f noise-enables stable DC gain over years of field operation |
| Rail-to-rail output | Swings within 250 mV of supply rails under 10 kΩ load-maximizes usable ADC input range in 3.3 V or 5 V systems |
| RFI-filtered inputs | Integrated RC filtering suppresses >20 MHz RF interference-prevents rectification errors in EMI-heavy factory environments |
| Low quiescent current | 525 μA max per amplifier-supports always-on sensor nodes in energy-harvesting or battery-backed applications |
| High PSRR/CMRR | 126 dB PSRR and 114 dB CMRR-maintains accuracy despite supply ripple or ground bounce in shared PCB power domains |
Applications
| Bridge Amplifiers | Strain Gauges |
|---|---|
Use Scenario: Amplifying low-level differential signals from Wheatstone bridges in pressure transducers and load cells. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low drift and high CMRR to reject bridge excitation noise. Use Value: Enables <10 ppm linearity error over temperature without recalibration, supporting Class III legal-for-trade weighing systems. |
Use Scenario: Signal conditioning for metallic foil or semiconductor strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Low-noise, zero-drift gain stage that preserves microstrain-level resolution (<1 με) in static and quasi-static measurements. Use Value: 10 nV/√Hz noise floor and 0.1 μV/°C drift allow detection of sub-microvolt changes over hours-critical for long-term creep analysis. |
| 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: Precision current-source driver and buffer for 4-wire RTD configurations with Kelvin sensing. Use Value: 75 μV max offset contributes <0.2°C error at 100°C-meeting ASTM E1137 Class B RTD accuracy requirements. |
Use Scenario: Front-end amplification in portable ECG, EEG, and patient monitors where signal integrity and safety are paramount. IC Role / Device Role / Timing Role: High-input-impedance, low-bias-current amplifier for biopotential electrode interfaces with DC-coupled baseline stability. Use Value: 250 pA typical input bias current prevents electrode polarization drift; 120 dB open-loop gain ensures <0.001% gain error in programmable gain stages. |
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 25 μV max offset and 0.085 μV/°C drift; higher 2 MHz GBW; same SOT-23-5 package | Better suited for ultra-high-precision metrology where <0.5 μV total drift is required over 50°C span | Select OPA188IDBVR when offset drift budget is tighter than 0.1 μV/°C and system calibration is impractical |
| LTC2050CS5#TRMPBF | 25 μV max offset, 0.05 μV/°C drift, 1.5 MHz GBW, 550 μA IQ; also SOT-23-5 | Higher cost; superior drift spec but lower PSRR (114 dB vs 126 dB); less robust against supply noise | Choose LTC2050CS5#TRMPBF only if drift is the dominant error source and supply filtering is already implemented |
Compared with OPA180IDBVR, OPA188IDBVR offers significantly lower drift and offset for metrology-grade applications, while LTC2050CS5#TRMPBF trades PSRR and cost for marginally better drift-making OPA180IDBVR the optimal balance of precision, noise, supply rejection, and value for industrial sensor signal chains.
Availability
OPA180IDBVR 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 multi-year production cycles.
Supply support for OPA180IDBVR 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 expertise in precision amplifiers and industrial signal chain solutions.
The OPAx180 family was designed specifically for high-accuracy, low-drift DC signal conditioning in industrial automation, test equipment, and medical devices-emphasizing long-term stability without user calibration.
FAQ
What is the operating temperature range for the OPA180IDBVR?
The OPA180IDBVR is specified for continuous operation from –40°C to +125°C. This extended range is validated across all key parameters-including offset drift (0.1 μV/°C), CMRR (≥100 dB), and quiescent current (≤600 μA)-making it suitable for under-hood automotive sensors and industrial control cabinets without derating.
Does the OPA180IDBVR support single-supply operation?
Yes, the OPA180IDBVR supports true single-supply operation from 4 V to 36 V. Its input common-mode range includes the negative rail (V–), and its rail-to-rail output swings within 250 mV of both supply rails under 10 kΩ load-enabling direct interfacing with 3.3 V or 5 V ADCs without level-shifting circuitry.
What is the maximum capacitive load the OPA180IDBVR can drive stably?
The OPA180IDBVR is characterized to drive up to 1 nF capacitive load without oscillation, as confirmed in the datasheet's "Capacitive Load Drive" specification. For loads >100 pF, external isolation resistance (e.g., 25 Ω in series with output) is recommended to maintain phase margin above 45° in closed-loop configurations.
How does the OPA180IDBVR's auto-zeroing affect its noise performance?
The OPA180IDBVR uses dual-chopper auto-zeroing to eliminate 1/f noise and drift, resulting in flat 10 nV/√Hz broadband noise above 1 Hz and only 0.25 μVPP integrated 0.1–10 Hz noise. This architecture avoids the high-frequency switching artifacts seen in basic choppers, preserving signal fidelity in precision DC and low-frequency AC applications.
Is the OPA180IDBVR pin-compatible with other SOT-23-5 op amps?
The OPA180IDBVR follows the standard SOT-23-5 pinout (V+, –IN, +IN, V–, OUT), matching industry conventions used by TI's OPAx320, OPAx376, and many third-party precision op amps. However, functional compatibility requires verification of supply range, output swing, and quiescent current-since not all SOT-23-5 op amps support rail-to-rail input or ±18 V operation like the OPA180IDBVR.
OPA180IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- SOT-23-5
OPA180IDBVR FAQ
1.How can I place an order for OPA180IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA180IDBVR 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 OPA180IDBVR reliable?
The price and inventory of OPA180IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA180IDBVR is usually 5 days.
3.What payment methods are accepted for OPA180IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA180IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA180IDBVR?
OPA180IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA180IDBVR 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 OPA180IDBVR?
For technical support, including OPA180IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA180IDBVR requirements.
6.How does Aetrix verify that OPA180IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA180IDBVR 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 OPA180IDBVR meets industry standards.
7.What is the process for return or replacement of OPA180IDBVR?
All OPA180IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA180IDBVR, 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 OPA180IDBVR part is unused and in its original packaging.
Return procedure for OPA180IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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