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Texas Instruments OPA4180IPW
- Part No.:
- OPA4180IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4180IPW.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,083
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Product details
Overview
OPA4180IPW from Texas Instruments is a quad-channel, zero-drift, rail-to-rail output operational amplifier optimized for precision DC-coupled signal conditioning in industrial and test equipment. It delivers 75 μV maximum offset voltage, 0.1 μV/°C drift, 10 nV/√Hz input voltage noise at 1 kHz, 120 dB open-loop gain, and operates from ±2 V to ±18 V supplies. It is used in high-accuracy bridge amplifier circuits requiring stable gain and minimal thermal drift over temperature.
For engineers reviewing the OPA4180IPW datasheet, OPA4180IPW pinout, OPA4180IPW application, or OPA4180IPW equivalent, this page provides verified specifications, package-validated pin functions, real-world use cases in strain gauge and temperature measurement systems, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The OPA4180IPW employs TI's proprietary auto-zeroing architecture with chopper-stabilized front-end and notch-filtered correction path to achieve near-zero long-term drift and low 1/f noise. Its input stage includes RFI-filtered inputs and supports common-mode voltage down to the negative rail.
It features rail-to-rail output swing within 18 mV of either supply rail under no-load conditions, maintains 114 dB CMRR and 126 dB PSRR across –40°C to +125°C, and delivers 2 MHz gain-bandwidth with 0.8 V/μs slew rate-enabling stable operation in precision active filters and transducer interfaces without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV max - ensures ≤0.0075% gain error in 10 V full-scale instrumentation amplifiers |
| Drift (dVIO/dT) | 0.1 μV/°C - contributes <1.2 μV total offset shift over 125°C operating range |
| Noise (0.1–10 Hz) | 0.25 μVPP - enables sub-16-bit resolution in slow-sampling precision ADC front-ends |
| Input Bias Current | ±1.7 nA max - compatible with high-impedance sensor nodes (e.g., RTDs, thermistors) |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V single-supply) - supports wide-input industrial power rails |
| Quiescent Current | 525 μA per amplifier - allows four-channel precision amplification within 2.1 mA total budget |
| Output Swing | 250 mV from rail (RL = 10 kΩ) - preserves dynamic range in 3.3 V or 5 V data acquisition systems |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body), thermally enhanced for industrial ambient operation up to +125°C. Pinout validated per TI SBOS584E Rev E (June 2018), Figure 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or next-stage input with rail-to-rail swing |
| 2 | –IN A | Inverting input, channel A - connects to feedback resistor in inverting configurations |
| 3 | +IN A | Noninverting input, channel A - accepts high-impedance sensor signals (e.g., bridge mid-point) |
| 4 | V+ | Positive supply - accepts bipolar (±18 V) or single-ended (up to 36 V) operation |
| 5 | +IN B | Noninverting input, channel B - isolated reference input for differential pair or dual-sensor interface |
| 6 | –IN B | Inverting input, channel B - matched to pin 2 for consistent layout symmetry |
| 7 | OUT B | Amplifier B output - independent output node; no internal cross-coupling with OUT A |
| 8 | OUT C | Amplifier C output - enables three-channel simultaneous signal conditioning (e.g., 3-phase current sensing) |
| 9 | –IN C | Inverting input, channel C - supports cascaded gain stages or multi-channel filter topologies |
| 10 | +IN C | Noninverting input, channel C - referenced to same VCM as other channels for common-mode rejection |
| 11 | V– | Negative supply or ground - required for bipolar operation; serves as return path in single-supply mode |
| 12 | +IN D | Noninverting input, channel D - dedicated input for fourth sensor or calibration reference path |
| 13 | –IN D | Inverting input, channel D - matches pin 2/6/9 for PCB routing consistency and thermal symmetry |
| 14 | OUT D | Amplifier D output - fully independent; supports 4× single-ended or 2× fully differential outputs |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | 0.1 μV/°C drift enables <10 μV total offset variation over full –40°C to +125°C industrial range |
| Rail-to-rail output | Swings within 250 mV of rails at 10 kΩ load - maximizes usable dynamic range in 3.3 V/5 V systems |
| RFI-filtered inputs | Integrated input filtering suppresses >10 MHz RF interference common in motor drive or switching PSU environments |
| Low 1/f noise | 0.25 μVPP (0.1–10 Hz) - critical for DC-stable measurements in electronic scales and medical sensors |
| High PSRR/CMRR | 126 dB PSRR and 114 dB CMRR maintain accuracy despite supply ripple or common-mode noise in noisy plants |
Applications
| Bridge Amplifier | Strain Gauge Interface |
|---|---|
|
Use Scenario: Amplifying mV-level differential output from full-bridge load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Quad OPA4180IPW configures two independent instrumentation amps (A+B and C+D) for ratiometric bridge excitation and differential gain. Use Value: 75 μV offset and 0.1 μV/°C drift ensure ≤0.01% full-scale error across temperature - meeting Class III scale certification requirements. |
Use Scenario: Signal conditioning for bonded foil strain gauges mounted on structural components in test benches. IC Role / Device Role / Timing Role: Each amplifier channel conditions one quarter-bridge leg; matched pairs enable common-mode rejection and thermal tracking. Use Value: 10 nV/√Hz noise floor and 120 dB open-loop gain support 24-bit ADC resolution without averaging or oversampling. |
| Temperature Measurement | Medical Instrumentation |
|
Use Scenario: Linearizing and amplifying output from platinum RTD (PT100/PT1000) sensors in HVAC and process control. IC Role / Device Role / Timing Role: Precision current source (via external transistor) + OPA4180IPW buffer and gain stage for 4-wire RTD configuration. Use Value: Input bias current ≤1.7 nA prevents self-heating errors in high-resistance RTD elements; 125°C rating supports furnace monitoring. |
Use Scenario: Front-end amplification for ECG, EEG, or EMG biopotential signals in portable diagnostic devices. IC Role / Device Role / Timing Role: Configured as low-noise, high-CMRR instrumentation amplifier with guard-driven shield and right-leg drive support. Use Value: 114 dB CMRR rejects 50/60 Hz mains interference; RFI filtering prevents AM radio band coupling into sensitive analog front-end. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4188IPW | Lower 25 μV max offset and 0.085 μV/°C drift; identical TSSOP-14 package and pinout | Better suited for ultra-high-precision applications (e.g., calibration standards); higher cost and slightly lower bandwidth (2 MHz vs 2 MHz, same) | Select OPA4188IPW when offset drift must be minimized below 0.5 μV over full temperature range; OPA4180IPW remains optimal for cost-sensitive industrial designs requiring proven 125°C operation. |
| LTC6090CGN-4#PBF | Higher supply range (±19.5 V), 1.2 MHz GBW, 12 nV/√Hz noise; 14-lead SOIC (not TSSOP), different pin assignment | Targeted at high-voltage precision applications (e.g., photodiode transimpedance >±15 V); not drop-in due to pin mismatch and larger footprint | Choose LTC6090CGN-4#PBF only when ±19.5 V operation or higher output drive (>50 mA) is required; OPA4180IPW offers superior low-frequency drift and smaller TSSOP-14 footprint for space-constrained boards. |
Compared with OPA4180IPW, OPA4188IPW improves DC precision at equal package size but adds cost, while LTC6090CGN-4#PBF extends voltage range and output capability at the expense of pin compatibility and low-frequency stability - making OPA4180IPW the balanced choice for industrial-grade 4-channel precision amplification.
Availability
OPA4180IPW is available at Aetrix Electronics and suitable for bridge amplifier circuits, strain gauge interfaces, temperature measurement systems, medical instrumentation front-ends, and precision active filters requiring stable component supply across extended temperature ranges.
Supply support for OPA4180IPW 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 focused on analog and embedded processing technologies, with over 50 years of innovation in precision analog ICs and industrial-grade signal chain solutions.
The OPAx180 family was designed specifically for high-accuracy, low-drift DC signal conditioning in harsh industrial environments - emphasizing long-term stability, rail-to-rail output, and robust EMI immunity without sacrificing bandwidth or noise performance.
FAQ
What is the operating temperature range for the OPA4180IPW?
The OPA4180IPW is specified from –40°C to +125°C, validated per TI SBOS584E Rev E. This extended range supports deployment in industrial control cabinets, automotive under-hood modules, and outdoor test equipment where ambient temperatures exceed standard commercial limits. All key parameters-including offset drift, CMRR, and quiescent current-are guaranteed across this full span.
Does the OPA4180IPW support single-supply operation?
Yes, the OPA4180IPW 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 either supply under 10 kΩ load. This enables direct interfacing with microcontroller ADCs and low-voltage sensors without level-shifting circuitry.
How does the zero-drift architecture of the OPA4180IPW reduce system-level calibration needs?
The OPA4180IPW's auto-zeroing architecture achieves 0.1 μV/°C offset drift and 75 μV max initial offset, reducing long-term drift-induced errors to under 10 μV over –40°C to +125°C. This minimizes or eliminates periodic factory recalibration in field-deployed instruments such as electronic scales and process transmitters.
Can the OPA4180IPW drive capacitive loads without instability?
The OPA4180IPW is characterized to drive ≥1 nF capacitive loads stably, as confirmed in TI SBOS584E Section 7.7. For loads >100 pF, adding a small series resistor (e.g., 25 Ω) between amplifier output and load capacitance ensures phase margin >45° and prevents peaking or oscillation in precision filter or cable-driving applications.
Is the OPA4180IPW pin-compatible with other quad op amps in TSSOP-14 packages?
The OPA4180IPW uses TI's standard TSSOP-14 pinout for quad op amps (per SBOS584E Figure 7), matching OPA4188IPW and OPA4330IPW. However, it is not pin-compatible with non-TI parts like the LT1499 or AD8629 due to differing channel assignments and supply pin locations - always verify pin functions before substitution.
OPA4180IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 4
- 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 (x4 Channels)
- Current - Output / Channel:
- 18 mA
- 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:
- 14-TSSOP
OPA4180IPW FAQ
1.How can I place an order for OPA4180IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4180IPW 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 OPA4180IPW reliable?
The price and inventory of OPA4180IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4180IPW is usually 5 days.
3.What payment methods are accepted for OPA4180IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4180IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4180IPW?
OPA4180IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4180IPW 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 OPA4180IPW?
For technical support, including OPA4180IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4180IPW requirements.
6.How does Aetrix verify that OPA4180IPW is sourced from the original manufacturer or authorized distributors?
All OPA4180IPW 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 OPA4180IPW meets industry standards.
7.What is the process for return or replacement of OPA4180IPW?
All OPA4180IPW units undergo pre-shipment inspection (PSI). If there is an issue with OPA4180IPW, 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 OPA4180IPW part is unused and in its original packaging.
Return procedure for OPA4180IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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