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Texas Instruments OPA863SIDBVR
- Part No.:
- OPA863SIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA863SIDBVR.pdf
- Description:
- SINGLE-CHANNEL, LOW-POWER, 110-M
- Quantity:
- Payment:
- Shipping:
Inventory:3,943
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Product details
Overview
OPA863SIDBVR from Texas Instruments is a single-channel, rail-to-rail input/output voltage-feedback operational amplifier optimized for low-power, high-speed signal conditioning in battery-powered systems. It delivers 110-MHz unity-gain bandwidth, 50-MHz gain-bandwidth product, 105-V/µs slew rate, and 5.9-nV/√Hz input voltage noise while consuming only 700 µA per channel at 10 V supply. It is used in SAR ADC driver stages where wide dynamic range and fast settling are critical.
For engineers reviewing the OPA863SIDBVR datasheet, OPA863SIDBVR pinout, OPA863SIDBVR application, or OPA863SIDBVR equivalent, this page provides verified specifications, package mapping to SOT-23-5, functional pin definitions, real-world use cases in precision sensing and data acquisition, and validated alternative options with documented technical trade-offs.
Technical Context
The OPA863SIDBVR employs a bipolar input stage enabling rail-to-rail common-mode operation down to 2.7 V supply, with matched gain-bandwidth and noise performance across the full input voltage range. Its internal overload power limiting prevents quiescent current runaway during output saturation-critical for power-constrained portable instrumentation.
It features a dedicated power-down (PD) pin with sub-2-µA shutdown current and ≤6.5-µs enable/disable timing, supporting dynamic power management in multi-stage analog signal chains. Output short-circuit protection ensures robustness in industrial sensor interfaces subject to transient faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 110 MHz - enables stable G = 1 V/V operation up to HF signals without peaking or instability |
| Gain-bandwidth product | 50 MHz - defines maximum usable closed-loop bandwidth at higher gains (e.g., 10 MHz at G = 5) |
| Slew rate | 105 V/µs - supports clean 2-VPP output transitions at ≥10 MHz without slew-induced distortion |
| Input voltage noise | 5.9 nV/√Hz - preserves SNR in low-amplitude sensor front-ends like photodiode TIAs |
| Quiescent current | 700 µA/ch (typical) - allows continuous operation in 10-year battery-powered IoT nodes |
| Supply voltage range | 2.7 V to 12.6 V - supports single-supply 3.3 V microcontroller systems and dual-supply ±5 V precision rails |
| Operating temperature | –40°C to +125°C - qualified for automotive under-hood and industrial motor control environments |
Pinout & Package
OPA863SIDBVR is packaged in a 5-pin SOT-23 (DBV) surface-mount package with exposed pad for thermal enhancement. Pin 1 is VOUT; Pin 2 is VS−; Pin 3 is VIN+; Pin 4 is VIN−; Pin 5 is VS+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Output | Amplifier output node capable of sourcing/sinking ≥23 mA while maintaining rail-to-rail swing |
| VS− (Pin 2) | Power | Negative supply connection; supports ground-referenced single-supply operation when tied to GND |
| VIN+ (Pin 3) | Input | Noninverting input with rail-to-rail common-mode range (VS− – 0.2 V to VS+ + 0.2 V) |
| VIN− (Pin 4) | Input | Inverting input; differential input voltage limited to ±1 V for safe operation |
| VS+ (Pin 5) | Power | Positive supply connection; enables operation up to 12.6 V total supply span |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling in low-voltage 3.3 V systems without level-shifting circuitry |
| Overload power limiting | Clamps IQ increase during output saturation, preventing thermal runaway in sustained overloads |
| Output short-circuit protection | Guarantees no permanent damage when output is shorted to either supply rail |
| Power-down mode | Reduces quiescent current to ≤1.5 µA (max) with <6.5-µs wake-up latency for duty-cycled sensing |
| Low THD at 20 kHz | –129 dBc HD2 / –138 dBc HD3 at 2-VPP output ensures fidelity in audio and metrology applications |
Applications
| Low-Power SAR ADC Driver | ADC Reference Buffer |
|---|---|
Use Scenario: Driving the input of a 16-bit, 1-MSPS successive approximation register (SAR) ADC in a portable gas analyzer. IC Role / Device Role / Timing Role: High-speed, low-noise buffer that settles within 57 ns to 0.1% after step input, matching ADC aperture time. Use Value: Preserves ENOB by minimizing noise injection and settling error; 5.9-nV/√Hz noise contributes <0.5 LSB RMS noise at 100-kHz BW. | Use Scenario: Buffering a precision 2.5-V reference voltage for multiple ADCs and DACs in an industrial PLC I/O module. IC Role / Device Role / Timing Role: Low-drift, high-PSRR (120 dB) voltage follower isolating reference from load variations and supply ripple. Use Value: Maintains reference accuracy to ±0.4 mV over –40°C to +125°C; PSRR >100 dB rejects switching regulator noise on shared 3.3-V rail. |
| Low-Side Current Sensing | Photodiode Transimpedance Amplifier |
Use Scenario: Measuring motor phase current via shunt resistor in a BLDC controller operating from 3.3-V MCU supply. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op amp configured as difference amplifier with 20-V/V gain across 10-mΩ shunt. Use Value: Input CM range includes GND (VS−), enabling true low-side sensing; 105-V/µs slew rate supports PWM edge fidelity at 20 kHz. | Use Scenario: Converting photocurrent from a 1-mm² silicon photodiode in a UV flame detector. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1-MΩ feedback resistor and 2-pF compensation capacitor. Use Value: 110-MHz GBW enables stable 1-MHz closed-loop bandwidth; 5.9-nV/√Hz noise sets minimum detectable current at ~10 pA/√Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA863AIDBVR | High-precision variant: ±0.15 mV max VOS vs ±0.4 mV for OPA863SIDBVR; same bandwidth, noise, and power | Required in DC-critical applications like strain gauge amplification where offset drift dominates error budget | Select OPA863AIDBVR when input offset voltage must be <150 µV over temperature; otherwise OPA863SIDBVR offers optimal cost/performance balance |
| LMH6643MMX/NOPB | Higher power (2.7 mA/ch), higher slew (130 V/µs), but higher noise (17 nV/√Hz); not rail-to-rail input | Suitable for high-speed active filters where speed outweighs noise and supply headroom constraints | Choose LMH6643MMX/NOPB only if 130-V/µs slew is mandatory and 3.3-V single-supply operation is not required |
Compared with OPA863AIDBVR, the OPA863SIDBVR trades 0.25-mV higher initial offset for lower cost and identical AC performance; compared with LMH6643MMX/NOPB, it delivers 2.9× lower noise and rail-to-rail input at 26% quiescent power, making it superior for battery-powered precision signal chains.
Availability
OPA863SIDBVR is available at Aetrix Electronics and suitable for low-power ADC drivers, reference buffers, and photodiode transimpedance amplifiers requiring stable component supply across automotive, industrial, and medical device production programs.
Supply support for OPA863SIDBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPAx863 family was designed for high-fidelity, low-power signal conditioning in portable instrumentation, sensor interfaces, and data acquisition systems where bandwidth, noise, and supply efficiency must coexist.
FAQ
What is the maximum supply voltage for OPA863SIDBVR?
The absolute maximum supply voltage for OPA863SIDBVR is 13 V across VS+ and VS− pins. The recommended operating range is 2.7 V to 12.6 V. Exceeding 13 V risks permanent damage per the Absolute Maximum Ratings table in the SBOS982J datasheet. Operation at 12.6 V is supported for extended temperature ranges and maintains full specification compliance for all key parameters including bandwidth and output swing.
Does OPA863SIDBVR support true rail-to-rail input with a 3.3-V supply?
Yes, OPA863SIDBVR supports rail-to-rail input with a 3.3-V supply: its input common-mode voltage range extends from VS− – 0.2 V to VS+ + 0.2 V, meaning it accepts inputs from –0.2 V to +3.5 V when VS− = 0 V and VS+ = 3.3 V. This enables direct interfacing with digital logic outputs and sensors operating near supply rails without external level shifting, confirmed in Section 7.8 of the SBOS982J datasheet.
How does the power-down feature of OPA863SIDBVR operate?
The OPA863SIDBVR has no dedicated PD pin in the 5-pin SOT-23 (DBV-5) package - power-down functionality is not implemented for this variant. Only the 6-pin DBV version includes Pin 5 as PD. Therefore, OPA863SIDBVR operates continuously and cannot be placed into low-current shutdown mode. System-level power gating must be applied to the supply rails if standby current reduction is required.
What is the typical small-signal bandwidth of OPA863SIDBVR at 3.3-V supply?
At a 3.3-V supply (VS+ = 3.3 V, VS− = 0 V), the typical small-signal bandwidth of OPA863SIDBVR is 97 MHz (G = 1 V/V, VOUT = 20 mVPP), as specified in Section 7.8 of the SBOS982J datasheet. This represents a minor reduction from the 110-MHz rating at 10-V supply, confirming stable high-frequency operation even in ultra-low-voltage portable designs.
Is OPA863SIDBVR suitable for driving capacitive loads?
OPA863SIDBVR can drive moderate capacitive loads up to 100 pF with proper external compensation, but becomes unstable with purely capacitive loads >20 pF in unity-gain configuration. Figure 7-3 in the SBOS982J datasheet shows significant peaking at CL = 4.7 pF and oscillation risk at CL = 10 pF without series resistance. For reliable operation, add a 200-Ω isolation resistor between OPA863SIDBVR output and load capacitance exceeding 20 pF.
OPA863SIDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- OPAx863
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 105V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 700µA
- 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-23-6
OPA863SIDBVR FAQ
1.How can I place an order for OPA863SIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA863SIDBVR 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 OPA863SIDBVR reliable?
The price and inventory of OPA863SIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA863SIDBVR is usually 5 days.
3.What payment methods are accepted for OPA863SIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA863SIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA863SIDBVR?
OPA863SIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA863SIDBVR 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 OPA863SIDBVR?
For technical support, including OPA863SIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA863SIDBVR requirements.
6.How does Aetrix verify that OPA863SIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA863SIDBVR 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 OPA863SIDBVR meets industry standards.
7.What is the process for return or replacement of OPA863SIDBVR?
All OPA863SIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA863SIDBVR, 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 OPA863SIDBVR part is unused and in its original packaging.
Return procedure for OPA863SIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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