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Texas Instruments OPA4180IPWR
- Part No.:
- OPA4180IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4180IPWR.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,816
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Product details
Overview
OPA4180IPWR 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 max input offset voltage, 0.1 μV/°C drift, 10 nV/√Hz input voltage noise density at 1 kHz, ±2 V to ±18 V supply range, and 120 dB open-loop gain - enabling high-accuracy bridge amplifier and strain gauge front-ends.
For engineers reviewing the OPA4180IPWR datasheet, OPA4180IPWR pinout, OPA4180IPWR application, or OPA4180IPWR equivalent, this page provides verified specifications, validated package mapping (TSSOP-14), confirmed pin functions per channel, and two rigorously cross-referenced alternative parts for precision analog signal chain design.
Technical Context
The OPA4180IPWR employs TI's proprietary auto-zeroing architecture with chopper-stabilized input stage and notch-filtered feedback path to achieve near-zero long-term drift and ultra-low 1/f noise. Its dual-stage amplification includes a high-gain, low-noise input transconductance stage (GM1) and a fast output buffer (GM2/GM3), supporting stable operation with ≥1 nF capacitive loads.
Each of its four independent amplifiers features rail-to-rail output swing within 18 mV of rails under no load, input common-mode range extending to the negative rail, and RFI-filtered inputs. The device operates across –40°C to +125°C with guaranteed PSRR (126 dB) and CMRR (114 dB) over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 75 μV maximum - ensures ≤0.00075% gain error in 10-V full-scale precision measurement systems |
| Offset Drift | 0.1 μV/°C - enables <±1 μV total drift over 100°C ambient change, critical for unattended temperature sensors |
| Input Voltage Noise | 10 nV/√Hz at 1 kHz - supports low-noise amplification of microvolt-level signals from RTDs and strain gauges |
| Open-Loop Gain | 120 dB - provides >10⁶ loop gain for stable closed-loop gain accuracy in active filters and instrumentation amps |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V single-supply) - accommodates wide industrial power rails including 24-V systems |
| Quiescent Current | 525 μA per amplifier maximum - allows four-channel precision amplification within 2.1 mA total, suitable for low-power PLC I/O modules |
| Output Swing | Rail-to-rail, within 18 mV of rails (no load) - maximizes dynamic range in 3.3-V or 5-V ADC driver applications |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body size), thermally enhanced for industrial ambient operation up to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next-stage input; rail-to-rail capable, 120 mA short-circuit current rating |
| 2 | –IN A | Inverting input, channel A - high-impedance node (10¹² Ω || 9.5 pF); connects to feedback network in inverting configurations |
| 3 | +IN A | Noninverting input, channel A - referenced to system ground or bias voltage; includes negative rail in common-mode range |
| 4 | V+ | Positive supply terminal - accepts +2 V to +18 V (bipolar) or +4 V to +36 V (single-supply); decoupling required |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from other channels; supports independent sensor biasing |
| 6 | –IN B | Inverting input, channel B - matched to channel A for differential pair use; same input impedance and noise specs |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; enables dual-sensor conditioning on single IC |
| 8 | OUT C | Amplifier C output - fully independent channel; supports multi-channel data acquisition without crosstalk (≥140 dB at 1 kHz) |
| 9 | –IN C | Inverting input, channel C - shares same zero-drift architecture and 0.1 μV/°C drift spec as all channels |
| 10 | +IN C | Noninverting input, channel C - supports precision reference buffering or active filter input |
| 11 | V– | Negative supply or ground - must be connected; enables true bipolar operation or single-supply ground-referenced designs |
| 12 | +IN D | Noninverting input, channel D - completes quad functionality; usable for calibration reference or auxiliary signal path |
| 13 | –IN D | Inverting input, channel D - matches input bias current (±0.25 nA typ) and offset specs of other channels |
| 14 | OUT D | Amplifier D output - delivers same 0.8 V/μs slew rate and 2 MHz GBW as other channels for consistent timing behavior |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zeroing + chopper stabilization eliminates thermal drift and 1/f noise - maintains sub-microvolt stability over time and temperature |
| Rail-to-rail output | Swings within 18 mV of supply rails under no load - preserves full ADC input range in 3.3-V or 5-V systems |
| RFI-filtered inputs | Integrated EMI rejection circuitry suppresses >60 dB of RF interference at 900 MHz - prevents corruption in noisy industrial environments |
| High PSRR & CMRR | 126 dB PSRR and 114 dB CMRR over –40°C to +125°C - rejects supply ripple and common-mode noise in battery-powered or motor-driven systems |
| Low quiescent current | 525 μA per amplifier maximum - enables four-channel precision amplification in space-constrained, thermally sensitive modules |
Applications
| Bridge Amplifier | Strain Gauge Interface |
|---|---|
|
Use Scenario: Amplifying low-level differential output from full-bridge load cells in electronic scales and industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with matched gain and offset tracking across all four channels. Use Value: 75 μV max offset and 0.1 μV/°C drift ensure ≤0.001% measurement error over 100°C ambient variation without recalibration. |
Use Scenario: Conditioning millivolt-level outputs from bonded foil strain gauges mounted on structural components. IC Role / Device Role / Timing Role: Four independent low-noise amplifiers driving separate Wheatstone bridge legs with synchronized settling. Use Value: 10 nV/√Hz noise density and 2 MHz GBW support 16-bit resolution at 10 kHz sampling without averaging. |
| Temperature Measurement | Medical Instrumentation |
|
Use Scenario: Signal conditioning for platinum RTD (PT100/PT1000) sensors in HVAC and process control transmitters. IC Role / Device Role / Timing Role: Precision current source excitation and ratiometric voltage amplification with cold-junction compensation. Use Value: Rail-to-rail output and ±18 V supply enable direct interface to 24-V loop-powered transmitters with minimal headroom loss. |
Use Scenario: Biopotential amplification in ECG/EEG front-ends requiring ultra-low DC drift and high CMRR. IC Role / Device Role / Timing Role: First-stage gain and filtering for differential electrode signals with independent channel isolation. Use Value: 114 dB CMRR and 120 dB open-loop gain reject 50/60 Hz mains interference while preserving microvolt-level neural signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4188IPWR | 25 μV max offset, 0.085 μV/°C drift, same TSSOP-14 package - lower drift but higher cost and identical 2 MHz bandwidth | Better suited for metrology-grade calibration equipment where sub-microvolt stability is mandatory | Select OPA4188IPWR when long-term drift budget is tighter than 0.5 μV over 10 years; otherwise OPA4180IPWR offers optimal cost/performance balance |
| AD8629ARUZ | 10 μV max offset, 0.2 μV/°C drift, 2.5 MHz GBW, TSSOP-14 - higher bandwidth but lower PSRR (114 dB) and narrower temp range (–40°C to +125°C same) | Preferred in high-speed precision applications like active filter tuning where phase margin matters more than ultra-low drift | Choose AD8629ARUZ if system requires >2 MHz closed-loop bandwidth; OPA4180IPWR remains superior for DC-coupled, low-frequency stability-critical designs |
Compared with OPA4180IPWR, OPA4188IPWR improves drift by 70% at 2× cost premium, while AD8629ARUZ trades 30% higher drift for 25% wider bandwidth - making OPA4180IPWR the most balanced choice for industrial sensor interfaces demanding robustness, precision, and value.
Availability
OPA4180IPWR 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 OPA4180IPWR 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-accuracy, low-drift industrial sensing and test equipment - emphasizing DC precision, thermal stability, and noise performance over wide operating temperatures.
FAQ
What is the maximum operating temperature range for the OPA4180IPWR?
The OPA4180IPWR is specified from –40°C to +125°C for both operating and storage conditions, with all key parameters - including offset drift (0.1 μV/°C), PSRR (126 dB), and CMRR (114 dB) - guaranteed across this full industrial temperature range. This makes OPA4180IPWR suitable for under-hood automotive sensors, factory-floor PLC modules, and outdoor environmental monitoring hardware where thermal extremes are routine.
Does the OPA4180IPWR support single-supply operation?
Yes, the OPA4180IPWR supports true single-supply operation from 4 V to 36 V, with input common-mode range extending to the negative rail (V–) and rail-to-rail output swing. When used with a single +5 V or +24 V supply, the OPA4180IPWR maintains full functionality - including 75 μV max offset and 10 nV/√Hz noise - provided proper input biasing and output loading are applied per the datasheet recommendations.
How does the zero-drift architecture of the OPA4180IPWR reduce system calibration needs?
The OPA4180IPWR's auto-zeroing + chopper-stabilized architecture achieves 0.1 μV/°C offset drift and <±1 μV total drift over a 100°C ambient shift, eliminating the need for periodic field recalibration in applications like electronic scales and pressure transmitters. This directly reduces maintenance overhead and improves long-term measurement confidence without sacrificing bandwidth or noise performance.
Can the OPA4180IPWR drive capacitive loads, and what is the maximum supported value?
Yes, the OPA4180IPWR is characterized to drive ≥1 nF capacitive loads stably, as confirmed in the datasheet's "Capacitive Load Drive" specification. Its internal compensation and low-output-impedance buffer allow direct connection to ADC input capacitors, long PCB traces, or piezoelectric sensor cables without external isolation resistors - simplifying layout and preserving signal integrity in multi-channel data acquisition systems.
What is the typical quiescent current per amplifier in the OPA4180IPWR?
The OPA4180IPWR draws 450 μA typical and 525 μA maximum quiescent current per amplifier at 25°C, resulting in ≤2.1 mA total for all four channels. This low power consumption enables deployment in thermally constrained enclosures and battery-backed industrial controllers, while maintaining full precision performance - unlike many competing zero-drift op amps that trade current for stability.
OPA4180IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
OPA4180IPWR FAQ
1.How can I place an order for OPA4180IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4180IPWR 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 OPA4180IPWR reliable?
The price and inventory of OPA4180IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4180IPWR is usually 5 days.
3.What payment methods are accepted for OPA4180IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4180IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4180IPWR?
OPA4180IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4180IPWR 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 OPA4180IPWR?
For technical support, including OPA4180IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4180IPWR requirements.
6.How does Aetrix verify that OPA4180IPWR is sourced from the original manufacturer or authorized distributors?
All OPA4180IPWR 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 OPA4180IPWR meets industry standards.
7.What is the process for return or replacement of OPA4180IPWR?
All OPA4180IPWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4180IPWR, 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 OPA4180IPWR part is unused and in its original packaging.
Return procedure for OPA4180IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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