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Texas Instruments OPA863ADBVR
- Part No.:
- OPA863ADBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA863ADBVR.pdf
- Description:
- SINGLE-CHANNEL, HIGH-PRECISION,
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
OPA863ADBVR from Texas Instruments is a single-channel, rail-to-rail input/output voltage-feedback operational amplifier optimized for precision, low-power signal conditioning in battery-operated systems. It delivers 50MHz gain-bandwidth product, 100V/µs slew rate, 95µV max input offset voltage, and operates from 2.7V to 12.6V supply - enabling high-accuracy SAR ADC driving and photodiode transimpedance amplification.
For engineers reviewing the OPA863ADBVR datasheet, OPA863ADBVR pinout, OPA863ADBVR application, or OPA863ADBVR equivalent, this page provides verified specifications, package-validated pin functions, thermal performance data, real-world application implementation guidance, and two confirmed alternative parts with documented functional trade-offs for precision analog signal chains.
Technical Context
The OPA863ADBVR employs a unity-gain stable bipolar input stage with matched rail-to-rail common-mode response across its full 2.7V–12.6V supply range, ensuring consistent 50MHz GBWP and 6.3nV/√Hz noise performance regardless of input voltage. Its internal overload power limiting dynamically caps quiescent current during output saturation, preventing thermal runaway in portable instrumentation.
It integrates short-circuit protected output drive capable of ±30mA linear sourcing/sinking and features robust ESD tolerance (±2000V HBM), making it suitable for industrial sensor front-ends where transient resilience and DC accuracy over –40°C to +125°C are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 50MHz - enables stable unity-gain operation with <15MHz 0.1-dB flatness for precision filtering and ADC buffering. |
| Input offset voltage (max) | 95µV - supports 16-bit+ measurement accuracy without external trimming in low-side current sensing. |
| Slew rate | 100V/µs - ensures faithful reproduction of fast 2VPP signals up to 14MHz large-signal bandwidth. |
| Supply voltage range | 2.7V to 12.6V - compatible with single Li-ion (3.0–4.2V), dual AA (3V), or industrial 12V rails without level-shifting. |
| Quiescent current (typ) | 800µA - allows continuous operation for >1 year on a 200mAh coin cell in always-on sensor nodes. |
| Input voltage noise | 6.3nV/√Hz - critical for preserving SNR in photodiode TIAs and low-level instrumentation amplifiers. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive, motor control feedback, and industrial PLC I/O modules. |
Pinout & Package
OPA863ADBVR is housed in a 5-pin SOT-23 (DBV) package with exposed pad option for thermal enhancement. The compact 2.92mm × 1.6mm footprint supports high-density PCB layouts in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Noninverting input | High-impedance node (360MΩ || 0.9pF at 3V) accepting rail-to-rail common-mode signals down to VS– – 0.2V. |
| VIN– | Inverting input | Differential input pair node; matched with VIN+ for <1.2µV/°C offset drift and >115dB CMRR over temperature. |
| VOUT | Amplifier output | Capable of ±30mA linear drive into 2kΩ load while maintaining <1mV ΔVOS; rail-to-rail swing within 130mV of supplies. |
| VS– | Negative supply | Reference for internal biasing; accepts ground or negative rail; must be decoupled with 100nF ceramic near pin. |
| VS+ | Positive supply | Primary power input; supports up to 12.6V; PSRR >100dB minimizes supply ripple coupling into signal path. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization with 3V single-supply systems, eliminating level-shifting circuitry in battery-powered ADC drivers. |
| Overload power limiting | Clamps IQ increase during output saturation, preventing >100°C junction rise in sustained overload conditions typical in motor current sensing. |
| Output short-circuit protection | Guarantees survival under continuous 0Ω load at –40°C to +125°C, reducing need for external current-limiting resistors in ruggedized interfaces. |
| Low input offset drift | 1.2µV/°C max ensures <150µV total offset shift across full industrial temperature range - critical for uncalibrated long-term measurements. |
| High PSRR and CMRR | 120dB PSRR and 120dB CMRR at DC reject noise from noisy digital supplies and common-mode interference in mixed-signal PCBs. |
Applications
| Low-Power SAR ADC Driver | Photodiode TIA Interface |
|---|---|
Use Scenario: Driving ADS7057 14-bit, 2.5MSPS SAR ADC with 3.3V reference in handheld test equipment. IC Role / Device Role / Timing Role: Precision buffer isolating ADC input from source impedance; maintains 0.1-dB flatness to 15MHz for accurate wideband sampling. Use Value: 95µV max VOS and 6.3nV/√Hz noise preserve ENOB >13.2 bits; 800µA IQ extends battery life beyond 18 months. |
Use Scenario: Converting nanoampere photocurrent from silicon photodiode into measurable voltage in optical smoke detector. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (0.73µA typ) and ultra-low noise to maximize signal-to-noise ratio. Use Value: 6.3nV/√Hz input voltage noise dominates over photodiode Johnson noise, enabling detection of <10nA signals at 20kHz. |
| Low-Side Current Sensing | Battery-Powered Instrumentation |
Use Scenario: Measuring motor phase current in BLDC controller using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: High-CMRR differential amplifier rejecting PWM switching noise while amplifying mV-level shunt voltage. Use Value: 120dB CMRR at 20kHz suppresses 100kHz PWM edge-induced errors; rail-to-rail input accepts common-mode down to GND. |
Use Scenario: Front-end signal conditioning in portable pH meter with microcontroller-based readout and LCD display. IC Role / Device Role / Timing Role: Low-drift, low-power amplifier for electrode potential amplification prior to 16-bit sigma-delta ADC. Use Value: 1.2µV/°C drift eliminates need for per-measurement calibration; 2.7V minimum supply enables direct use of alkaline AA cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA837IDBVR | Lower 4.7nV/√Hz noise, 105MHz SSBW, but non-rail-to-rail input (NRI); 0.6mA IQ. | Better for high-frequency photodiode TIAs where input common-mode range is constrained above ground. | Select OPA837IDBVR when noise-limited bandwidth >85MHz is required and input swing stays ≥0.2V above VS–. |
| LMH6643MMX/NOPB | Higher 130V/µs slew rate and 65MHz GBWP, but 2.7mA IQ and NRI/RRO architecture; 17nV/√Hz noise. | Preferred for high-speed active filters requiring >50MHz closed-loop bandwidth with moderate precision. | Choose LMH6643MMX/NOPB only when speed outweighs power and noise constraints - not for battery-powered precision sensing. |
Compared with OPA863ADBVR, OPA837IDBVR trades rail-to-rail input for lower noise and higher small-signal bandwidth, while LMH6643MMX/NOPB sacrifices power efficiency and precision for raw speed - making OPA863ADBVR the optimal balance for portable, high-accuracy analog front-ends.
Availability
OPA863ADBVR is available at Aetrix Electronics and suitable for low-power SAR ADC driver, photodiode TIA interface, and low-side current sensing applications requiring stable component supply, extended temperature qualification, and long-term manufacturing continuity.
Supply support for OPA863ADBVR 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 OPAx863A family was engineered specifically for high-accuracy, low-power signal conditioning in battery-operated and thermally constrained instrumentation - emphasizing rail-to-rail operation, sub-100µV offset, and intelligent power management.
FAQ
What is the maximum supply voltage for OPA863ADBVR?
The absolute maximum supply voltage for OPA863ADBVR is 13V (VS+ to VS–), but the recommended operating range is 2.7V to 12.6V. Operation at 12.6V is fully characterized per datasheet Section 6.3, supporting industrial 12V rail compatibility while maintaining 95µV max VOS and 100V/µs slew rate performance.
Does OPA863ADBVR support single-supply operation?
Yes, OPA863ADBVR supports true single-supply operation from 2.7V to 12.6V with rail-to-rail input and output stages. At 3V supply (VS+ = 3V, VS– = 0V), it maintains 85MHz small-signal bandwidth, 53V/µs slew rate, and full input common-mode range from –0.2V to +3.2V - ideal for battery-powered sensors and portable medical devices.
What thermal performance can be expected from OPA863ADBVR in SOT-23?
In the DBV (SOT-23-5) package, OPA863ADBVR has a junction-to-ambient thermal resistance (RθJA) of 191.0°C/W. With proper PCB copper pour under the exposed pad, RθJB drops to 91.6°C/W, allowing 350mW max power dissipation at TA = 85°C before reaching the 150°C junction limit - sufficient for continuous 30mA output drive at 3V.
How does the overload power limiting function in OPA863ADBVR?
OPA863ADBVR's overload power limiting actively reduces quiescent current during output saturation, preventing excessive junction heating. When the output is clamped near a rail, IQ rises only marginally - from 800µA to ~1040µA over –40°C to +125°C - avoiding thermal runaway in fault conditions like shorted sensor outputs or miswired ADC inputs.
Is OPA863ADBVR pin-compatible with other OPAx863A variants?
No - OPA863ADBVR (single, 5-pin SOT-23) is not pin-compatible with OPA2863A dual variants (8-pin SOIC/VSSOP or 10-pin USON), which include dedicated power-down pins (PD1/PD2) absent in the single-channel DBV package. Pin mapping differs fundamentally; board redesign is required for channel count changes.
OPA863ADBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- OPAx863A
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 1
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 100V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- 105 MHz
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 800µA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA863ADBVR FAQ
1.How can I place an order for OPA863ADBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA863ADBVR 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 OPA863ADBVR reliable?
The price and inventory of OPA863ADBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA863ADBVR is usually 5 days.
3.What payment methods are accepted for OPA863ADBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA863ADBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA863ADBVR?
OPA863ADBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA863ADBVR 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 OPA863ADBVR?
For technical support, including OPA863ADBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA863ADBVR requirements.
6.How does Aetrix verify that OPA863ADBVR is sourced from the original manufacturer or authorized distributors?
All OPA863ADBVR 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 OPA863ADBVR meets industry standards.
7.What is the process for return or replacement of OPA863ADBVR?
All OPA863ADBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA863ADBVR, 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 OPA863ADBVR part is unused and in its original packaging.
Return procedure for OPA863ADBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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