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Texas Instruments OPA186DBVR
- Part No.:
- OPA186DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA186DBVR.pdf
- Description:
- SINGLE, 24-V, LOW-POWER (90-A) 5
- Quantity:
- Payment:
- Shipping:
Inventory:3,333
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Product details
Overview
OPA186DBVR from Texas Instruments is a single-channel, rail-to-rail input/output, zero-drift operational amplifier optimized for precision signal conditioning in high-accuracy, low-power systems. It delivers 1 µV max offset voltage, 0.01 µV/°C max drift, 750 kHz gain bandwidth, and operates from 4.5 V to 24 V supply across –40°C to +125°C - enabling use in high-side current shunt monitoring and battery-powered instrumentation.
For engineers reviewing the OPA186DBVR datasheet, OPA186DBVR pinout, OPA186DBVR application, or OPA186DBVR equivalent, key selection criteria include ultra-low drift stability over temperature, RFI/EMI-filtered inputs for noisy environments, rail-to-rail operation at 24-V supply, and verified performance in high-common-mode-voltage sensing circuits.
Technical Context
The OPA186DBVR employs a proprietary auto-zero/chopper-stabilized architecture with dual-stage modulation (CHOP1/CHOP2), notch filtering, and feed-forward gain stages to achieve near-zero drift and eliminate 1/f noise while maintaining 0.35 V/µs slew rate and unity-gain stability. Its differential front-end supports common-mode voltages extending 200 mV beyond rails.
This architecture enables phase-reversal protection, MUX-friendly inputs, and robust ESD immunity (±1000 V HBM), making it suitable for multiplexed sensor interfaces and industrial transmitters where signal integrity must be preserved under dynamic common-mode shifts and EMI exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±1 µV max - ensures <10 µV total error in 16-bit+ measurement systems without calibration. |
| Offset Drift | ±0.01 µV/°C max - guarantees <1.2 µV total drift over –40°C to +125°C operating range. |
| Supply Range | 4.5 V to 24 V single-supply - supports direct interfacing with 24-V industrial buses and wide-input DC/DC outputs. |
| Gain Bandwidth | 750 kHz - enables stable closed-loop operation up to 10× gain with >100 kHz signal bandwidth. |
| Quiescent Current | 90 µA per amplifier - allows continuous operation in battery-powered meters with multi-year runtime. |
| Input Common-Mode Range | (V–) – 0.2 V to (V+) + 0.2 V - permits high-side current sensing at positive rail without level-shifting. |
| CMRR | 118 dB min (±2.25 V), 120 dB min (±12 V) - rejects >99.999% of common-mode interference in precision bridges. |
Pinout & Package
OPA186DBVR is packaged in a 5-pin SOT-23 (DBV) surface-mount package with exposed pad for thermal enhancement. Pin 1 is OUT; Pin 2 is V–; Pin 3 is +IN; Pin 4 is –IN; Pin 5 is V+. All pins are electrically defined - no NC terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Rail-to-rail output stage capable of sourcing/sinking ±20 mA; swings within 10 mV of rails at no load. |
| 2 (V–) | Power | Negative supply terminal; lowest potential rail - required for biasing internal chopper and amplifiers. |
| 3 (+IN) | Input | Noninverting input; supports common-mode voltage up to (V+) + 0.2 V for high-side sensing. |
| 4 (–IN) | Input | Inverting input; matched to +IN for precision differential gain; includes integrated EMI filtering. |
| 5 (V+) | Power | Positive supply terminal; accepts up to 24 V; decoupling capacitor required at this pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 200 mV beyond supply rails - eliminates need for external level shifters in high-side current monitors. |
| Zero-drift architecture | Auto-zero + chopper hybrid design achieves <1 µV offset and near-zero long-term drift - reduces calibration frequency in field-deployed meters. |
| EMI rejection | Integrated RF filters on both inputs suppress interference from GSM, Wi-Fi, and switching regulators - improves SNR in mixed-signal PCBs. |
| Phase-reversal protection | Prevents output inversion when inputs exceed common-mode limits - maintains safe control loop behavior in overvoltage fault conditions. |
| MUX-friendly inputs | Low charge injection and fast settling after channel switching - enables accurate multiplexed sensor arrays without guard-band delays. |
Applications
| High-Side Current Shunt Monitor | Electricity Meter Analog Front End |
|---|---|
Use Scenario: Monitoring battery or bus current in 24-V merchant power supplies using a shunt resistor placed between load and positive rail. IC Role / Device Role / Timing Role: Precision op amp configured as difference amplifier to reject common-mode voltage while amplifying microvolt-level shunt voltage. Use Value: Enables direct high-side sensing without isolation or level-shifting, preserving accuracy across –40°C to +125°C with <1.2 µV total drift. |
Use Scenario: Signal conditioning of current and voltage transformers in Class 0.2 electricity meters compliant with IEC 62053-21. IC Role / Device Role / Timing Role: Low-drift, low-noise amplifier driving 24-bit sigma-delta ADC inputs with minimal gain error over temperature. Use Value: Delivers <1 ppm/°C effective gain drift and 125 nVRMS 0.1–10 Hz noise - meets metrology-grade linearity and repeatability requirements. |
| Flow Transmitter Signal Conditioning | Pressure Transmitter Output Stage |
Use Scenario: Amplifying low-level mV outputs from Coriolis or magnetic flow sensors in industrial process control loops. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and rail-to-rail output driving 4–20 mA DAC or ADC. Use Value: Maintains <10 µV total offset error over full temperature range - eliminates recalibration during seasonal ambient shifts in unheated enclosures. |
Use Scenario: Conditioning bridge outputs from piezoresistive pressure sensors in HVAC and industrial automation transmitters. IC Role / Device Role / Timing Role: Low-noise, high-CMRR amplifier compensating for sensor offset and thermal drift before analog-to-digital conversion. Use Value: 118 dB CMRR and 0.01 µV/°C drift ensure <0.05% FS error contribution over –40°C to +85°C - exceeds ANSI/ISA-71.04 G2 corrosion severity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA182IDBVR | Higher GBW (10 MHz), higher IQ (440 µA), same 1 µV VOS but 0.03 µV/°C drift - less stable over temperature. | Better for high-speed active filters; unsuitable for ultra-stable DC measurements requiring <0.1 µV/°C drift. | Select OPA182IDBVR only when bandwidth >1 MHz is required and power budget allows >4× quiescent current. |
| LTC2057HS5#TRMPBF | Similar 0.5 µV VOS and 0.015 µV/°C drift, but 500 kHz GBW and 175 µA IQ - lower speed, higher power than OPA186DBVR. | Valid for low-frequency sensor interfaces where 750 kHz is excessive; not recommended for fast-settling multiplexed systems. | Choose LTC2057HS5#TRMPBF if legacy design uses SO-5 package footprint and requires proven reliability in aerospace-grade applications. |
Compared with OPA186DBVR, OPA182IDBVR trades ultra-low drift for speed and higher power, while LTC2057HS5#TRMPBF offers comparable drift at reduced bandwidth and increased quiescent current - making OPA186DBVR optimal for 24-V, low-power, high-stability DC sensing where 750 kHz bandwidth suffices.
Availability
OPA186DBVR is available at Aetrix Electronics and suitable for electricity metering, industrial flow transmitters, and high-side current monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA186DBVR 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 OPAx186 family was designed specifically for high-accuracy, low-power industrial sensing - targeting applications demanding sub-microvolt stability, EMI resilience, and rail-to-rail operation in 24-V systems.
FAQ
What is the maximum supply voltage rating for OPA186DBVR?
The absolute maximum supply voltage for OPA186DBVR is 26 V, but the recommended operating range is 4.5 V to 24 V. Operation above 24 V risks exceeding internal junction temperature limits and may degrade long-term reliability - always observe derating curves in Section 6.4 of the SBOS968C datasheet when operating near thermal limits.
Does OPA186DBVR support true rail-to-rail input operation?
Yes, OPA186DBVR supports rail-to-rail input with a common-mode range from (V–) – 0.2 V to (V+) + 0.2 V. This allows direct connection to signals exceeding the supply rails by 200 mV - a critical capability for high-side current shunt monitoring where the input common-mode sits at V+.
Can OPA186DBVR drive capacitive loads without instability?
OPA186DBVR is unity-gain stable but exhibits reduced phase margin with capacitive loads >100 pF. Figure 6-34 shows phase margin drops below 45° at 1 nF; for loads >500 pF, an isolation resistor (RISO ≥ 25 Ω) is required in series with the output to maintain stability - confirmed in typical characteristics section of SBOS968C.
What is the typical input bias current of OPA186DBVR at 125°C?
At TA = +125°C, the typical input bias current of OPA186DBVR is ±4.8 nA (maximum ±550 pA at +85°C). This elevated bias at high temperature must be accounted for in high-impedance sensor interfaces - e.g., a 10-MΩ source impedance introduces ~48 mV of error at 125°C.
Is OPA186DBVR suitable for multiplexed sensor applications?
Yes, OPA186DBVR is explicitly designed as MUX-friendly: its inputs feature low charge injection and fast settling after switching transients, and its zero-drift architecture prevents accumulation of offset errors across channel changes - validated in application note SBAA345 for 16-channel thermocouple scanners.
OPA186DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.35V/µs
- Gain Bandwidth Product:
- 750 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 90µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 24 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA186DBVR FAQ
1.How can I place an order for OPA186DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA186DBVR 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 OPA186DBVR reliable?
The price and inventory of OPA186DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA186DBVR is usually 5 days.
3.What payment methods are accepted for OPA186DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA186DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA186DBVR?
OPA186DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA186DBVR 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 OPA186DBVR?
For technical support, including OPA186DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA186DBVR requirements.
6.How does Aetrix verify that OPA186DBVR is sourced from the original manufacturer or authorized distributors?
All OPA186DBVR 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 OPA186DBVR meets industry standards.
7.What is the process for return or replacement of OPA186DBVR?
All OPA186DBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA186DBVR, 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 OPA186DBVR part is unused and in its original packaging.
Return procedure for OPA186DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA186DBVR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM2902DR
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LM358P
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