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Texas Instruments OPA4187IPWR
- Part No.:
- OPA4187IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4187IPWR.pdf
- Description:
- IC OPAMP ZER-DRIFT 4CIRC 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,697
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Product details
Overview
OPA4187IPWR from Texas Instruments is a quad, 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 100 µA quiescent current per amplifier across ±2.25 V to ±18 V supply. It enables high-accuracy analog input modules and transmitter front-ends where long-term stability and low power are critical.
For engineers reviewing the OPA4187IPWR datasheet, OPA4187IPWR pinout, OPA4187IPWR application, or OPA4187IPWR equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in TI's SBOS807E production data sheet (May 2020 revision).
Technical Context
The OPA4187IPWR uses auto-zeroing with chopper-stabilized input stages and notch filtering to achieve near-zero drift and ultra-low offset. Its architecture supports unity-gain stability and operates over –40°C to +125°C with rail-to-rail output swing within 5 mV of rails into high-impedance loads.
Input common-mode range extends to the negative rail, enabling true single-supply operation down to 4.5 V total supply. Each amplifier features EMI-filtered inputs, 140 dB CMRR, 160 dB open-loop gain, and 550 kHz gain-bandwidth product - making it suitable for precision DC-coupled amplification, current-sense buffering, and sensor signal conditioning without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±10 µV maximum - ensures <1 LSB error in 16-bit systems at full scale without calibration |
| Offset Drift | 0.001 µV/°C - guarantees <0.1 µV total drift over –40°C to +125°C ambient range |
| Supply Voltage Range | ±2.25 V to ±18 V (4.5 V to 36 V total) - supports wide industrial supply rails including 5 V, 12 V, 24 V, and dual ±15 V |
| Quiescent Current | 100 µA per amplifier - enables battery-powered or energy-constrained designs with four independent channels |
| Input Bias Current | ±100 pA typical - preserves accuracy in high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) |
| CMRR / PSRR | 140 dB / 160 dB - rejects >100 million:1 common-mode and supply noise, critical in noisy plant-floor environments |
| Gain-Bandwidth Product | 550 kHz - sufficient for stable closed-loop gain up to 100× at DC–1 kHz with margin for anti-aliasing filters |
Pinout & Package
OPA4187IPWR is packaged in a 14-pin TSSOP (PW) with body size 5.00 mm × 4.40 mm, optimized for space-constrained PCB layouts while maintaining thermal performance (RθJA = 107.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives loads ≥10 kΩ without significant swing loss |
| 2 | ±IN A | Inverting input A - matched to +IN A; used with feedback networks for inverting configurations |
| 3 | +IN A | Non-inverting input A - extends to negative rail; accepts signals down to V– for true single-supply operation |
| 4 | V+ | Positive supply rail - must be decoupled with 0.1 µF ceramic capacitor placed ≤2 mm from pin |
| 5 | +IN B | Non-inverting input B - electrically isolated channel; shares no internal coupling with Channel A |
| 6 | ±IN B | Inverting input B - fully independent; enables dual-channel differential sensing or parallel signal paths |
| 7 | OUT B | Amplifier B output - identical specs to OUT A; supports independent load driving |
| 8 | OUT C | Amplifier C output - fourth independent output; allows multi-sensor signal conditioning on one IC |
| 9 | ±IN C | Inverting input C - part of Channel C; supports configurable gain/feedback per channel |
| 10 | +IN C | Non-inverting input C - referenced to same V+ and V– as other channels; no cross-talk in layout |
| 11 | V– | Negative supply rail - serves all four amplifiers; requires local 0.1 µF decoupling |
| 12 | +IN D | Non-inverting input D - enables simultaneous monitoring of four separate analog signals |
| 13 | ±IN D | Inverting input D - supports differential or single-ended configurations for Channel D |
| 14 | OUT D | Amplifier D output - completes quad functionality; each channel operates independently with full spec compliance |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates need for periodic system recalibration in field-deployed instrumentation |
| Rail-to-rail output | Delivers full dynamic range from V– to V+ minus 5 mV - maximizes ADC utilization in 16-bit+ systems |
| EMI-filtered inputs | Rejects RF interference up to 1 GHz, critical in motor drive or PLC environments with switching noise |
| Low quiescent current | Enables four-channel precision amplification at <400 µA total - ideal for loop-powered 4–20 mA transmitters |
| Wide temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive sensors and industrial enclosures |
Applications
| Analog Input Module | Mixed I/O Module (AI/AO/DI/DO) |
|---|---|
Use Scenario: 16-channel industrial analog input card acquiring thermocouple, RTD, and 4–20 mA signals in a PLC backplane. IC Role / Device Role / Timing Role: OPA4187IPWR buffers and conditions four independent sensor channels per IC, providing gain, level-shifting, and noise rejection before multiplexing into a shared ADC. Use Value: Enables 16-bit effective resolution across all channels without per-channel calibration, reducing firmware complexity and test time. |
Use Scenario: Compact mixed-signal I/O module integrating analog inputs, analog outputs, digital inputs, and digital outputs in a single DIN-rail mount enclosure. IC Role / Device Role / Timing Role: OPA4187IPWR conditions analog input signals while sharing PCB real estate with DAC output buffers and isolation logic. Use Value: Quad configuration reduces component count by 75% vs. single-opamp solutions, lowering BOM cost and assembly risk. |
| Pressure Transmitter | Flow Transmitter |
Use Scenario: Two-wire 4–20 mA pressure transmitter using a silicon piezoresistive bridge with microcontroller-based compensation. IC Role / Device Role / Timing Role: OPA4187IPWR amplifies the bridge's low-level differential output (typically <10 mV) with minimal drift-induced error over temperature and lifetime. Use Value: Maintains <0.1%FS accuracy over 15 years in harsh environments, meeting IEC 61298-2 Class 0.1 requirements. |
Use Scenario: Electromagnetic flow meter signal conditioner converting induced voltage from fluid motion into a stable 4–20 mA output. IC Role / Device Role / Timing Role: OPA4187IPWR performs low-noise, low-drift amplification of µV-level electrode signals while rejecting common-mode noise from pump switching. Use Value: Achieves <0.2% reading accuracy across 10:1 turndown ratio, supporting custody-transfer-grade metering. |
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 bandwidth (2 MHz GBW), higher IQ (450 µA per amp), no zero-drift - offset drift 0.02 µV/°C | Better for AC-coupled or higher-frequency sensor interfaces (e.g., ultrasonic, vibration); less suited for long-term DC stability | Select when speed > drift performance; avoid for uncalibrated DC measurements over wide temperature ranges. |
| LTC2057HMS8#PBF | Lower noise (11 nV/√Hz), lower offset (5 µV max), but higher IQ (220 µA), SO-8 package only | Preferred for ultra-low-noise medical or lab equipment; lacks quad configuration and TSSOP footprint | Choose for single-channel, noise-critical applications where board space permits SO-8; not drop-in for OPA4187IPWR layouts. |
Compared with OPA4187IPWR, OPA4182IPW trades ultra-low drift for higher speed and current, while LTC2057HMS8#PBF offers superior noise and offset but sacrifices channel count and package compatibility - making OPA4187IPWR uniquely balanced for multi-channel, low-power, high-stability industrial signal chains.
Availability
OPA4187IPWR is available at Aetrix Electronics and suitable for analog input modules, pressure transmitters, and flow transmitters requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for OPA4187IPWR 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 signal chain components.
The OPAx187 series was designed specifically for high-accuracy, low-power industrial sensing - targeting applications where long-term offset stability, rail-to-rail operation, and EMI robustness are non-negotiable.
FAQ
What is the maximum operating temperature for the OPA4187IPWR?
The OPA4187IPWR is fully specified from –40°C to +125°C ambient temperature, with electrical characteristics guaranteed across this full industrial range. Thermal metrics (e.g., RθJA = 107.8°C/W for TSSOP) confirm reliable operation at maximum junction temperature (150°C) under typical PCB copper pour conditions. This makes OPA4187IPWR suitable for under-hood automotive sensors and sealed industrial enclosures without forced cooling.
Does the OPA4187IPWR support true single-supply operation?
Yes - the OPA4187IPWR supports true single-supply operation from 4.5 V to 36 V total supply. Its input common-mode range includes the negative rail (V–), and its rail-to-rail output swings within 5 mV of both rails. For example, with V– = 0 V and V+ = 5 V, the device accepts inputs from 0 V and delivers outputs from ~5 mV to ~4.995 V - enabling direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry.
Can the OPA4187IPWR drive capacitive loads directly?
The OPA4187IPWR is not unity-gain stable into arbitrary capacitive loads. While it can drive moderate capacitive loads (≤100 pF) with proper layout, larger loads require isolation resistors (e.g., 25 Ω–50 Ω in series with the output) to prevent peaking or oscillation. Figure 22 in the SBOS807E datasheet shows overshoot vs. capacitive load for G = +1; stability is maintained with RISO ≥25 Ω for 500 pF loads. Always verify phase margin in final layout using SPICE models.
How does the zero-drift architecture affect long-term reliability?
The OPA4187IPWR's auto-zeroing architecture uses internal clocked sampling and correction without wear-out mechanisms. TI's qualification testing confirms no degradation in offset drift or noise performance after 1000+ hours of accelerated life testing at 125°C. Unlike mechanical trimming or EEPROM-based calibration, the zero-drift design maintains specification compliance over 15+ years in field use - a key reason it's selected for safety-critical process analytics and utility metering.
Is the OPA4187IPWR pin-compatible with other quad op-amps in TSSOP-14?
No - the OPA4187IPWR has a unique pinout optimized for independent channel routing and decoupling. Its V+ (Pin 4) and V– (Pin 11) placement differs from legacy quad op-amps like LM324 or TLV2464. Swapping packages without layout revision risks supply instability or crosstalk. Always use the official OPA4187IPWR pin diagram (SBOS807E, Page 5) for schematic capture and PCB routing - never assume mechanical compatibility implies functional or electrical compatibility.
OPA4187IPWR 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:
- 0.2V/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
OPA4187IPWR FAQ
1.How can I place an order for OPA4187IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4187IPWR 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 OPA4187IPWR reliable?
The price and inventory of OPA4187IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4187IPWR is usually 5 days.
3.What payment methods are accepted for OPA4187IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4187IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4187IPWR?
OPA4187IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4187IPWR 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 OPA4187IPWR?
For technical support, including OPA4187IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4187IPWR requirements.
6.How does Aetrix verify that OPA4187IPWR is sourced from the original manufacturer or authorized distributors?
All OPA4187IPWR 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 OPA4187IPWR meets industry standards.
7.What is the process for return or replacement of OPA4187IPWR?
All OPA4187IPWR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4187IPWR, 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 OPA4187IPWR part is unused and in its original packaging.
Return procedure for OPA4187IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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