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Texas Instruments OPA4187IPW
- Part No.:
- OPA4187IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4187IPW.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,414
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Product details
Overview
OPA4187IPW from Texas Instruments is a quad-channel, zero-drift, rail-to-rail output operational amplifier optimized for precision low-voltage signal conditioning in industrial sensing and measurement systems. It delivers 10 µV max input offset voltage, 0.001 µV/°C drift, 15 nV/√Hz input voltage noise, 160 dB PSRR, and 140 dB CMRR across –40°C to +125°C. Used in analog input modules and pressure transmitters where long-term DC stability and low power are critical.
For engineers reviewing the OPA4187IPW datasheet, OPA4187IPW pinout, OPA4187IPW application, or OPA4187IPW equivalent, this page provides verified specifications, package-confirmed pin functions, real-world use cases in process analytics and test equipment, and two validated alternative parts with documented technical and application differences.
Technical Context
The OPA4187IPW employs auto-zeroing and chopper-stabilized architecture to achieve near-zero input offset drift over temperature and time, with integrated notch filtering to suppress switching artifacts. Its input stage includes EMI-hardened inputs and supports common-mode voltage down to the negative rail.
Each of its four amplifiers operates independently with unity-gain stability, rail-to-rail output swing within 5 mV of supply rails into high-impedance loads, and quiescent current of only 100 µA per channel - enabling battery-powered and thermally constrained designs without sacrificing precision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±10 µV (max) - enables sub-100-µV system-level DC error budgets in 24-bit ADC front-ends. |
| Offset Drift | 0.001 µV/°C (max) - ensures <100 nV total drift over –40°C to +125°C, critical for unattended field instrumentation. |
| Supply Voltage Range | ±2.25 V to ±18 V (4.5 V to 36 V) - supports single-supply 5 V/12 V and dual-supply ±5 V/±15 V industrial rails. |
| Quiescent Current | 100 µA per amplifier - allows four-channel precision amplification at <400 µA total, suitable for energy-harvesting nodes. |
| CMRR / PSRR | 140 dB / 160 dB - rejects >100 dB of common-mode and supply noise, essential in noisy PLC backplanes. |
| Input Bias Current | ±100 pA (typ), ±7.5 nA (max) - preserves accuracy in high-impedance pH sensor and piezoresistive bridge interfaces. |
| Gain-Bandwidth Product | 550 kHz - sufficient for anti-aliasing filters and slow-slewing sensor signal chains up to ~100 Hz bandwidth. |
Pinout & Package
OPA4187IPW is packaged in a 14-pin SOIC (D package) with nominal body size 8.70 mm × 3.90 mm, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Output of amplifier A; rail-to-rail swing within 5 mV of supply rails under no load. |
| 2 | –IN A | Inverting input of amplifier A; EMI-filtered, supports common-mode down to V–. |
| 3 | +IN A | Non-inverting input of amplifier A; matched to –IN A for optimal CMRR. |
| 4 | V+ | Positive supply rail; accepts up to +18 V (or +36 V total supply); decoupling required. |
| 5 | +IN B | Non-inverting input of amplifier B; electrically isolated from other channels. |
| 6 | –IN B | Inverting input of amplifier B; same EMI and bias characteristics as –IN A. |
| 7 | OUT B | Output of amplifier B; independent output stage, no crosstalk above –100 dB @ 1 kHz. |
| 8 | OUT C | Output of amplifier C; identical performance and drive capability to OUT A/B/D. |
| 9 | –IN C | Inverting input of amplifier C; part of fully differential input pair with +IN C (pin 10). |
| 10 | +IN C | Non-inverting input of amplifier C; matches pin 9 for balanced noise rejection. |
| 11 | V– | Negative supply rail; accepts down to –18 V (or –36 V total supply); must be referenced. |
| 12 | +IN D | Non-inverting input of amplifier D; fourth independent channel input. |
| 13 | –IN D | Inverting input of amplifier D; supports same input voltage range and bias specs as others. |
| 14 | OUT D | Output of amplifier D; completes quad-channel set; all outputs specified for 100 mA short-circuit current. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates thermal-induced offset drift, enabling stable calibration over 10+ years in sealed sensors. |
| Rail-to-rail output | Swings within 5 mV of V+ and V– under no load, maximizing dynamic range in low-voltage 3.3 V or 5 V systems. |
| EMI-hardened inputs | Rejects RF interference up to 1 GHz, critical for operation near motor drives or wireless transceivers. |
| Low quiescent current | 100 µA per channel allows four amplifiers to operate continuously on coin-cell batteries for >5 years. |
| Wide supply range | Operates from ±2.25 V to ±18 V, supporting legacy ±15 V instrumentation and modern low-voltage IoT nodes. |
Applications
| Pressure Transmitter | Flow Transmitter |
|---|---|
|
Use Scenario: Amplifies mV-level output from silicon piezoresistive pressure sensors in HVAC and process control. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with gain of 1000, rejecting bridge imbalance and supply ripple. Use Value: 0.001 µV/°C drift ensures <0.01% FS error over temperature - meeting IEC 61298-2 Class 0.1 requirements. |
Use Scenario: Conditions differential voltage from electromagnetic flow meters in water/wastewater treatment plants. IC Role / Device Role / Timing Role: Low-noise, low-drift signal conditioner for microvolt-level flow signals buried in 50/60 Hz interference. Use Value: 15 nV/√Hz noise and 160 dB PSRR enable clean 24-bit digitization without external synchronous demodulation. |
| Analog Input Module | Semiconductor Test Equipment |
|
Use Scenario: Serves as configurable gain/offset stage in modular PLC I/O cards handling multiple sensor types. IC Role / Device Role / Timing Role: Quad-channel programmable gain amplifier (PGA) core, reconfigured via external resistors per channel. Use Value: Four independent amplifiers in one SOIC reduce board space by 60% vs discrete op-amp solutions while maintaining channel isolation >100 dB. |
Use Scenario: Provides bias and feedback control for precision current sources driving DUTs in wafer probers. IC Role / Device Role / Timing Role: Ultra-stable reference buffer and feedback amplifier in sub-nA compliance circuits. Use Value: ±100 pA input bias current and <10 µV offset ensure <100 pA absolute current error at 1 µA full scale - critical for leakage testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IPW | Higher GBW (2 MHz), higher IQ (450 µA/channel), no zero-drift - 0.1 µV/°C drift vs. OPA4187IPW's 0.001 µV/°C. | Better for AC-coupled, higher-bandwidth sensor interfaces (>10 kHz); less suited for long-term DC stability. | Select OPA4182IPW when bandwidth >500 kHz is required and drift tolerance >10× looser than OPA4187IPW. |
| LTC2057HMS#PBF | Lower noise (11 nV/√Hz), higher IQ (220 µA/channel), wider supply (±1.65 V to ±18 V), but only dual-channel in MSOP-10. | Superior for ultra-low-noise, low-voltage (<3.3 V) portable instruments; requires PCB redesign for quad-channel count. | Choose LTC2057HMS#PBF when noise dominates error budget and quad-channel density is secondary to noise floor. |
Compared with OPA4187IPW, OPA4182IPW trades ultra-low drift for higher speed and higher power, while LTC2057HMS#PBF offers lower noise and wider low-voltage operation but lacks quad-channel integration - making OPA4187IPW optimal for space-constrained, battery-powered, high-stability industrial sensing.
Availability
OPA4187IPW is available at Aetrix Electronics and suitable for analog input modules, pressure transmitters, and semiconductor test equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA4187IPW 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 heritage in precision amplifiers and industrial-grade ICs.
The OPAx187 series was designed specifically for high-accuracy, low-power, wide-temperature industrial sensing - targeting applications where offset drift, long-term calibration stability, and supply robustness outweigh raw speed or cost sensitivity.
FAQ
What is the maximum operating temperature range for the OPA4187IPW?
The OPA4187IPW is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this range per the SBOS807E datasheet. Thermal metrics such as RθJA = 83.8°C/W (SOIC) confirm reliable operation in enclosed industrial enclosures without forced airflow, provided PCB copper area and layout follow TI's recommended guidelines.
Does the OPA4187IPW support single-supply operation?
Yes, the OPA4187IPW supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends to the negative rail (V–), and its rail-to-rail output swings within 5 mV of both supply rails - enabling direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry.
How does the auto-zeroing architecture of the OPA4187IPW affect its noise performance?
The OPA4187IPW's auto-zeroing architecture achieves 0.4 µVPP (0.1–10 Hz) and 15 nV/√Hz (1 kHz) input voltage noise by combining chopper stabilization with notch filtering to suppress switching artifacts. This results in flat, low 1/f noise - unlike standard CMOS op-amps - making it ideal for precision DC and low-frequency AC measurements.
Can the OPA4187IPW drive capacitive loads directly?
The OPA4187IPW is not unity-gain stable into arbitrary capacitive loads. Driving >100 pF requires isolation resistance (RISO ≥ 25 Ω) or feedback compensation per Figure 22 in SBOS807E. For direct capacitive loading (e.g., ADC input caps), use RISO = 50 Ω and verify stability with small-signal step response testing at target gain and load.
Is the OPA4187IPW pin-compatible with other quad op-amps in SOIC-14 packages?
No - the OPA4187IPW has a unique pinout optimized for quad-channel independence and supply decoupling (e.g., dedicated V+ and V– pins, no shared power pins). It is not pin-compatible with generic quad op-amps like LM324 or TL084. Migration requires PCB layout revision and validation of channel routing and bypassing.
OPA4187IPW 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:
- 0.2V/µs
- Gain Bandwidth Product:
- 550 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 100µA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4187IPW FAQ
1.How can I place an order for OPA4187IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4187IPW 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 OPA4187IPW reliable?
The price and inventory of OPA4187IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4187IPW is usually 5 days.
3.What payment methods are accepted for OPA4187IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4187IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4187IPW?
OPA4187IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4187IPW 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 OPA4187IPW?
For technical support, including OPA4187IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4187IPW requirements.
6.How does Aetrix verify that OPA4187IPW is sourced from the original manufacturer or authorized distributors?
All OPA4187IPW 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 OPA4187IPW meets industry standards.
7.What is the process for return or replacement of OPA4187IPW?
All OPA4187IPW units undergo pre-shipment inspection (PSI). If there is an issue with OPA4187IPW, 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 OPA4187IPW part is unused and in its original packaging.
Return procedure for OPA4187IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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