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Texas Instruments OPA186DBVT
- Part No.:
- OPA186DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA186DBVT.pdf
- Description:
- SINGLE, 24-V, LOW-POWER (90-A) 5
- Quantity:
- Payment:
- Shipping:
Inventory:256
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Product details
Overview
OPA186DBVT 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 across –40°C to +125°C - enabling use in high-side current shunt monitoring, electricity metering, and battery-powered instrumentation.
For engineers reviewing the OPA186DBVT datasheet, OPA186DBVT pinout, OPA186DBVT application, or OPA186DBVT equivalent, this page provides verified electrical specifications, SOIC-8 and SOT-23-5 package mapping, confirmed pin functions, thermal metrics, and two validated alternative op amps with documented functional and application differences.
Technical Context
The OPA186DBVT implements a proprietary chopper-stabilized architecture with dual-stage modulation (CHOP1/CHOP2), notch filtering, and feed-forward gain stages to achieve near-zero drift while maintaining unity-gain stability and robust EMI rejection. Its rail-to-rail input extends 200 mV beyond supply rails, eliminating need for external level-shifting in high-common-mode applications.
This architecture enables phase-reversal protection, MUX-friendly inputs, and low 125 nVRMS (0.1–10 Hz) noise - all while sustaining 0.35 V/µs slew rate and 7.5 µs 0.1% settling time. Input bias current remains below ±4.8 nA over full temperature range, supporting high-impedance sensor interfaces without significant error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset voltage | ±1 µV max - enables sub-µV-level DC accuracy in strain gauge or thermocouple front ends without calibration. |
| Offset drift | ±0.01 µV/°C max - ensures <±0.85 µV total drift over –40°C to +125°C, critical for unattended industrial sensors. |
| Supply range | 4.5 V to 24 V single or ±2.25 V to ±12 V dual - supports direct integration into 12-V/24-V industrial power rails and battery systems. |
| Quiescent current | 90 µA typical - allows continuous operation in energy-constrained portable meters and wireless transmitters. |
| Gain bandwidth | 750 kHz - sufficient for anti-aliasing filters, active bridge amplifiers, and 16-bit SAR ADC drivers up to ~100 kSPS. |
| CMRR | 118–146 dB - rejects common-mode noise from motor drives or switching PSUs in flow/pressure transmitter analog front ends. |
| Input voltage noise | 125 nVRMS (0.1–10 Hz) - preserves resolution in low-frequency precision measurement of microvolt-level signals. |
Pinout & Package
OPA186DBVT is available in the DBV (SOT-23-5) package - a 5-pin, surface-mount, ultra-small-outline transistor package measuring 2.9 mm × 1.6 mm × 1.1 mm. Thermal resistance RθJA is 166.8°C/W, requiring minimal PCB copper area for thermal management in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Amplified, rail-to-rail output signal; capable of sourcing/sinking ±20 mA with <120 mV swing from rails at 10 kΩ load. |
| 2 - V– | Power | Negative (lowest) supply terminal; must be connected to system ground or negative rail; supports single-supply operation down to 4.5 V. |
| 3 - +IN | Input | Noninverting input; rail-to-rail capable (extends 200 mV beyond V–/V+); used for reference-sensing or high-side current monitor feedback. |
| 4 - –IN | Input | Inverting input; rail-to-rail capable; accepts differential signals up to full supply range; phase-reversal protected. |
| 5 - V+ | Power | Positive (highest) supply terminal; supports up to 24 V; decoupling capacitor required within 2 mm for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Operates with common-mode voltage from (V–) – 0.2 V to (V+) + 0.2 V - eliminates level-shifting circuits in high-side shunt monitors. |
| Zero-drift architecture | Chopper-stabilized core with dual modulation and notch filtering - achieves <±0.01 µV/°C drift without external calibration. |
| EMI/RFI filtered inputs | Integrated on-chip filtering suppresses interference from GSM, Wi-Fi, and switching regulators - improves reliability in noisy industrial environments. |
| Phase-reversal protection | Prevents output inversion when inputs exceed common-mode range - avoids catastrophic control-loop failure in closed-loop current sensing. |
| MUX-friendly inputs | Low charge injection and clock feedthrough enable stable operation when multiplexing multiple sensors into one amplifier channel. |
Applications
| High-Side Current Shunt Monitor | Electricity Meter Analog Front End |
|---|---|
Use Scenario: Monitoring battery or bus current in 12–24 V systems using a shunt resistor placed between load and positive rail. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail input, rejecting common-mode voltage up to 24 V while resolving µV-level shunt drops. Use Value: Enables accurate current measurement without isolation or level-shifting components, reducing BOM cost and board area by >30% versus non-rail-to-rail alternatives. |
Use Scenario: Amplifying voltage and current sensor outputs in Class 0.2/0.5 polyphase electricity meters operating across –25°C to +70°C. IC Role / Device Role / Timing Role: Low-drift, low-noise signal conditioner for metrology-grade ADC inputs; maintains accuracy over 15-year field lifetime. Use Value: Delivers <±1 µV offset and <±0.01 µV/°C drift - meeting IEC 62053-21 long-term stability requirements without periodic recalibration. |
| Flow Transmitter Signal Conditioning | Pressure Transmitter Output Stage |
Use Scenario: Converting low-level output from ultrasonic or Coriolis flow sensors into standardized 4–20 mA or 0–10 V signals. IC Role / Device Role / Timing Role: Precision gain stage and buffer driving DAC or current-output circuitry; operates from wide supply range (4.5–24 V). Use Value: 750 kHz GBW and 0.35 V/µs slew rate support fast response to transient flow events while maintaining linearity over full temperature range. |
Use Scenario: Amplifying millivolt-level outputs from piezoresistive or capacitive pressure sensors in HVAC or industrial process controllers. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier front end; rejects common-mode noise from solenoid valves and pumps. Use Value: 125 nVRMS (0.1–10 Hz) noise and 118–146 dB CMRR ensure <0.05% FS error in 100-psia transmitters over full industrial temperature range. |
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 (1.3 mA), no chopper architecture - exhibits 1/f noise and 0.1 µV/°C drift. | Better for AC-coupled, wideband sensor interfaces (e.g., accelerometers); unsuitable for DC-critical metrology where zero-drift is mandatory. | Select OPA182IDBVR only when bandwidth >1 MHz is required and long-term DC stability is secondary. |
| LTC2057HMS8#PBF | Lower IQ (120 µA), similar offset (1.5 µV), wider supply (2.7–14 V), but limited to 125°C max junction temperature. | Valid for commercial/industrial temp range; not rated for extended 125°C ambient operation in sealed enclosures or solar inverters. | Choose LTC2057HMS8#PBF only if supply voltage <4.5 V is needed or TI's manufacturing ecosystem is not preferred. |
Compared with OPA186DBVT, OPA182IDBVR trades ultra-low drift for bandwidth and speed, while LTC2057HMS8#PBF offers comparable precision at lower voltage but sacrifices high-temperature reliability - making OPA186DBVT the optimal choice for 24-V, high-ambient, zero-drift-critical applications.
Availability
OPA186DBVT is available at Aetrix Electronics and suitable for electricity metering, flow transmitter signal chains, and high-side current monitoring requiring stable component supply across automotive, industrial, and energy infrastructure programs.
Supply support for OPA186DBVT 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, wide-supply industrial sensing - targeting applications demanding zero-drift performance without sacrificing rail-to-rail input capability or EMI robustness.
FAQ
What is the maximum operating temperature for the OPA186DBVT?
The OPA186DBVT is specified for operation from –40°C to +125°C ambient temperature. Its absolute maximum junction temperature is 150°C, and thermal metrics (RθJA = 166.8°C/W for DBV package) confirm safe operation under continuous 24-V, 90-µA conditions in enclosed industrial enclosures with minimal airflow.
Does the OPA186DBVT require external compensation for unity-gain stability?
No - the OPA186DBVT is internally compensated and unity-gain stable. It drives capacitive loads up to 100 pF without oscillation, as verified in Figure 6-34 (Phase Margin vs Capacitive Load). No external compensation network is needed for standard gain configurations (G ≥ 1).
Can the OPA186DBVT be used in high-side current shunt monitoring with 24-V common-mode voltage?
Yes - the OPA186DBVT supports rail-to-rail input with common-mode voltage ranging from (V–) – 0.2 V to (V+) + 0.2 V. At 24-V supply, it accepts inputs up to 24.2 V, making it ideal for high-side shunt monitoring without level-shifting resistors or isolated amplifiers.
What is the short-circuit current rating of the OPA186DBVT?
The OPA186DBVT has a continuous short-circuit current rating of ±20 mA per amplifier, as specified in Section 6.7. This is validated across temperature (–40°C to +125°C) and supports robust operation in fault-tolerant current-sense and driver applications.
Is the OPA186DBVT pin-compatible with other members of the OPAx186 family?
No - the OPA186DBVT (SOT-23-5) is not pin-compatible with OPA2186 or OPA4186, which use 8-pin and 14-pin SOIC packages respectively. Even the OPA186D (SOIC-8) variant uses a different pinout than the DBV package, as shown in Figures 5-1 and 5-2 of the datasheet.
OPA186DBVT 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
OPA186DBVT FAQ
1.How can I place an order for OPA186DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA186DBVT 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 OPA186DBVT reliable?
The price and inventory of OPA186DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA186DBVT is usually 5 days.
3.What payment methods are accepted for OPA186DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA186DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA186DBVT?
OPA186DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA186DBVT 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 OPA186DBVT?
For technical support, including OPA186DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA186DBVT requirements.
6.How does Aetrix verify that OPA186DBVT is sourced from the original manufacturer or authorized distributors?
All OPA186DBVT 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 OPA186DBVT meets industry standards.
7.What is the process for return or replacement of OPA186DBVT?
All OPA186DBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA186DBVT, 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 OPA186DBVT part is unused and in its original packaging.
Return procedure for OPA186DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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