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Texas Instruments OPA4180ID
- Part No.:
- OPA4180ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4180ID.pdf
- Description:
- IC OPAMP ZERO-DRIFT 4CIRC 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:482
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Product details
Overview
OPA4180ID from Texas Instruments is a quad-channel, zero-drift, rail-to-rail output operational amplifier designed 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, ±2 V to ±18 V supply range, and 120 dB open-loop gain - enabling stable 16-bit+ resolution in electronic scales and bridge amplifier circuits.
For engineers reviewing the OPA4180ID datasheet, OPA4180ID pinout, OPA4180ID application, or OPA4180ID equivalent, key selection criteria include its guaranteed 0.1 μV/°C drift over –40°C to +125°C, 2 MHz gain-bandwidth product with 0.8 V/μs slew rate, rail-to-rail output swing within 250 mV of rails (RL = 10 kΩ), low 525 μA per-amplifier quiescent current, and TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA4180ID implements TI's proprietary auto-zeroing architecture with dual chopper stages and notch filtering to continuously correct input offset and 1/f noise, achieving near-zero drift without external calibration. Its input stage includes RFI-filtered inputs and supports common-mode voltage down to the negative rail.
Each of the four amplifiers operates independently with matched specifications: PSRR of 126 dB and CMRR of 114 dB ensure robust rejection of supply and common-mode disturbances in noisy industrial environments, while the 22 μs 0.1% settling time (±18 V, 10-V step) supports fast precision data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV max - ensures ≤0.0012% error in 6 V full-scale 16-bit DAC output monitoring |
| Drift (dVIO/dT) | 0.1 μV/°C - guarantees <1 μV total drift over full –40°C to +125°C operating range |
| Input Voltage Noise | 10 nV/√Hz @ 1 kHz - enables sub-1 μV RMS noise in 100 Hz–10 kHz bandwidth sensor front-ends |
| Gain-Bandwidth | 2 MHz - supports stable unity-gain buffer or G = 10 amplification up to 200 kHz |
| Supply Range | ±2 V to ±18 V (or 4 V to 36 V single-supply) - compatible with legacy ±15 V and modern 24 V industrial rails |
| Output Swing | 250 mV from rail (RL = 10 kΩ) - delivers >34 VPP dynamic range on ±18 V supplies |
| Quiescent Current | 525 μA per amplifier - allows four-channel operation under 2.1 mA total, suitable for low-power battery-backed instrumentation |
Pinout & Package
OPA4180ID is packaged in a 14-pin TSSOP (PW) with 5.00 mm × 4.40 mm body size, optimized for thermal performance (RθJA = 106.9°C/W) and board-level EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 kΩ with rail-to-rail swing and 120 dB open-loop gain |
| 2 | –IN A | Inverting input, channel A - high-impedance (10¹² Ω || 9.5 pF) node for precision feedback networks |
| 3 | +IN A | Noninverting input, channel A - accepts common-mode signals down to V– rail for single-supply sensor biasing |
| 4 | V+ | Positive supply - connects to +18 V (bipolar) or +36 V (single-supply); decoupling required within 1 cm |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from channel A; matches all DC/AC specs |
| 6 | –IN B | Inverting input, channel B - supports independent differential configurations per channel pair |
| 7 | OUT B | Amplifier B output - identical AC/DC performance to OUT A; no crosstalk above –140 dB at DC |
| 8 | OUT C | Amplifier C output - enables 3-channel simultaneous sampling (e.g., 3-phase current sensing) |
| 9 | –IN C | Inverting input, channel C - shares same zero-drift correction loop timing as other channels |
| 10 | +IN C | Noninverting input, channel C - supports Kelvin-sense connections for low-side shunt monitoring |
| 11 | V– | Negative supply or ground - referenced for all internal biasing; must be low-impedance path to minimize PSRR degradation |
| 12 | +IN D | Noninverting input, channel D - allows fourth independent signal path (e.g., reference buffer + 3x sensor amps) |
| 13 | –IN D | Inverting input, channel D - fully specified for –40°C to +125°C; no derating required |
| 14 | OUT D | Amplifier D output - completes quad functionality; supports 4-wire RTD excitation and sensing |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Continuous auto-zeroing eliminates thermal drift and 1/f noise - maintains 16-bit linearity over temperature without recalibration |
| Rail-to-rail output | Swings within 250 mV of rails at 10 kΩ load - maximizes dynamic range in 3.3 V or 24 V single-supply systems |
| RFI-filtered inputs | Integrated RC filtering rejects >30 dB of 900 MHz cellular interference - critical for medical devices near wireless transceivers |
| High PSRR/CMRR | 126 dB PSRR and 114 dB CMRR - suppresses supply ripple and ground bounce in motor drive feedback loops |
| MicroSIZE TSSOP | 5.00 mm × 4.40 mm footprint - fits 4-channel precision amplification in <12 mm² area, reducing PCB cost vs SOIC-14 |
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 OPA4180ID configures two amplifiers as precision instrumentation amp (INA) and two as reference buffers and filter stages. Use Value: 0.1 μV/°C drift ensures ≤0.02% full-scale error drift over –10°C to +60°C ambient - eliminating annual recalibration. | Use Scenario: Signal conditioning for bonded foil strain gauges in structural health monitoring sensors. IC Role / Device Role / Timing Role: Each amplifier conditions one gauge quadrant; matched drift enables true differential cancellation of thermal effects. Use Value: 10 nV/√Hz noise floor supports <100 nε resolution at 10 Hz bandwidth - detecting micro-strain in aerospace composites. |
| 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: One channel buffers excitation current, two configure constant-current source + ratiometric readout, fourth filters ADC input. Use Value: 75 μV max offset contributes <0.2°C error at 0°C - meeting Class A RTD accuracy requirements per IEC 60751. | Use Scenario: Front-end amplification for ECG, EEG, and EMG biopotential electrodes in portable diagnostic devices. IC Role / Device Role / Timing Role: Three channels implement high-CMRR instrumentation amp; fourth provides right-leg drive (RLD) reference. Use Value: 114 dB CMRR rejects 50/60 Hz mains interference without active guarding - enabling clean 100 dB SNR recordings. |
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; higher 2 MHz GBW; same TSSOP-14 package | Better for <18-bit systems requiring tighter initial accuracy; higher cost and power (750 μA/amplifier) | Select OPA4188IPW when offset budget is <25 μV and long-term stability dominates over quiescent current |
| AD8629ARUZ | 25 μV max offset, 0.1 μV/°C drift, 2.5 MHz GBW; 14-lead TSSOP but different pinout (no V+ on pin 4) | Requires PCB redesign due to non-compatible pin mapping; superior EMI rejection (120 dB at 900 MHz) | Choose AD8629ARUZ only if EMI immunity is critical and layout revision is feasible |
Compared with OPA4180ID, OPA4188IPW offers tighter DC specs at higher power cost, while AD8629ARUZ provides better RF immunity but demands pinout adaptation - making OPA4180ID the optimal balance of precision, power, and drop-in compatibility in TSSOP-14 industrial designs.
Availability
OPA4180ID 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 OPA4180ID 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 signal chain solutions.
The OPAx180 family was engineered specifically for high-stability, low-drift applications in industrial automation, test equipment, and medical instrumentation where DC accuracy and thermal robustness are non-negotiable.
FAQ
What is the maximum operating temperature range for OPA4180ID?
The OPA4180ID is specified from –40°C to +125°C for both electrical characteristics and reliability. This extended range is validated per TI's production data sheet SBOS584E (Rev. E, June 2018) and applies to all four amplifiers in the quad package - enabling use in engine control units, industrial ovens, and outdoor environmental sensors without derating.
Does OPA4180ID support single-supply operation?
Yes, OPA4180ID 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 - allowing direct interfacing with 3.3 V, 5 V, or 24 V microcontrollers and ADCs without level-shifting circuitry.
What is the typical quiescent current per amplifier in OPA4180ID?
The typical quiescent current per amplifier in OPA4180ID is 450 μA, with a maximum of 525 μA at 25°C and up to 600 μA across –40°C to +125°C. This low power consumption enables four-channel precision amplification under 2.4 mA total - ideal for battery-powered portable instrumentation and energy-conscious industrial nodes.
How does the zero-drift architecture of OPA4180ID reduce system calibration needs?
The OPA4180ID uses TI's dual-chopper auto-zeroing architecture to continuously cancel input offset and 1/f noise, resulting in 0.1 μV/°C drift and <4 μV long-term stability (1000-hour life test). This eliminates the need for periodic factory or field recalibration in applications like electronic scales and precision thermometry - reducing maintenance cost and downtime.
Is OPA4180ID pin-compatible with other quad op-amps in TSSOP-14 packages?
No, OPA4180ID has a unique pinout optimized for layout symmetry and thermal balance: V+ on pin 4 and V– on pin 11 differ from industry-standard TSSOP-14 op-amps (e.g., LM324, TLV2464). Direct replacement requires PCB modification; however, its functional equivalence and TSSOP-14 footprint allow mechanical drop-in with schematic updates.
OPA4180ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SOIC
OPA4180ID FAQ
1.How can I place an order for OPA4180ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4180ID 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 OPA4180ID reliable?
The price and inventory of OPA4180ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4180ID is usually 5 days.
3.What payment methods are accepted for OPA4180ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4180ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4180ID?
OPA4180ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4180ID 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 OPA4180ID?
For technical support, including OPA4180ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4180ID requirements.
6.How does Aetrix verify that OPA4180ID is sourced from the original manufacturer or authorized distributors?
All OPA4180ID 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 OPA4180ID meets industry standards.
7.What is the process for return or replacement of OPA4180ID?
All OPA4180ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA4180ID, 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 OPA4180ID part is unused and in its original packaging.
Return procedure for OPA4180ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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