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Texas Instruments OPA2863DR
- Part No.:
- OPA2863DR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2863DR.pdf
- Description:
- DUAL, LOW-POWER, 110-MHZ, 12-V,
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
OPA2863DR from Texas Instruments is a dual-channel, rail-to-rail input/output voltage-feedback operational amplifier optimized for low-power, high-speed signal conditioning in battery-powered and space-constrained 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 at 700-µA per channel quiescent current across 2.7-V to 12.6-V supply range.
For engineers reviewing the OPA2863DR datasheet, OPA2863DR pinout, OPA2863DR application, or OPA2863DR equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases in ADC driver and current-sensing circuits, and validated alternative options with documented functional and application-level differences.
Technical Context
The OPA2863DR implements a bipolar-input voltage-feedback architecture with unity-gain stability and matched AC performance across its full input common-mode range (VS– – 0.2 V to VS+ + 0.2 V). Its rail-to-rail output stage supports ±30-mA linear drive into 2-kΩ loads while maintaining <1.3-mV input offset voltage and ±1-µV/°C drift over –40°C to +125°C.
Each amplifier features independent power-down control (PD1/PD2), enabling selective channel disablement with ≤1.5-µA shutdown current and ≤6.5-µs turn-on delay. Built-in overload power limiting and short-circuit protection ensure robust operation under saturated or fault conditions without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 110 MHz - enables stable G = 1 V/V operation with fast settling (57 ns to 0.1%) for precision buffer applications. |
| Gain-bandwidth product | 50 MHz - defines usable closed-loop bandwidth at higher gains (e.g., ~10 MHz at G = 5 V/V). |
| Slew rate | 105 V/µs - supports clean amplification of fast transient signals up to 2-VPP at 20 kHz without distortion. |
| Input voltage noise | 5.9 nV/√Hz - ensures minimal added noise in low-amplitude sensor interfaces like photodiode TIAs. |
| Quiescent current per channel | 700 µA (typical) - allows dual-channel high-speed amplification in 3-V battery systems with sub-1.4-mW total dissipation. |
| Supply voltage range | 2.7 V to 12.6 V - supports single-supply (3 V, 5 V) and split-supply (±5 V, ±6.3 V) configurations without performance compromise. |
| Operating temperature | –40°C to +125°C - qualified for automotive under-hood, industrial motor control, and outdoor metering environments. |
Pinout & Package
Dual-channel SOIC-8 (D) package with exposed pad; 1.27-mm pitch; 4.9-mm × 3.9-mm body; RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT1 | Amplifier 1 output | Delivers rail-to-rail output swing (VS– + 0.14 V to VS+ – 0.14 V) with ±30-mA sourcing/sinking capability. |
| VIN1– | Amplifier 1 inverting input | Accepts differential input signals with 200-kΩ || 0.5-pF impedance; supports common-mode range down to VS– – 0.2 V. |
| VIN1+ | Amplifier 1 noninverting input | Matches VIN1– characteristics; enables precision instrumentation and difference amplification with CMRR ≥ 100 dB. |
| VS– | Negative supply | Reference node for dual-supply operation; accepts ground in single-supply mode; must be decoupled with 0.1-µF ceramic capacitor. |
| VIN2– | Amplifier 2 inverting input | Electrically isolated from Channel 1; enables independent signal paths with –124-dBc crosstalk at 1 MHz. |
| VIN2+ | Amplifier 2 noninverting input | Provides identical DC and AC specs as VIN1+; supports dual-channel ADC front-end or stereo signal processing. |
| VOUT2 | Amplifier 2 output | Functionally identical to VOUT1; shares same output drive strength and rail-to-rail swing limits. |
| VS+ | Positive supply | Accepts up to 12.6-V total supply; PSRR ≥ 100 dB minimizes supply ripple coupling into output signals. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (3-V) systems without level-shifting circuitry. |
| Power-down mode (PD1/PD2) | Reduces per-channel quiescent current to ≤1.5 µA, extending battery life in intermittent-sampling applications. |
| Overload power limiting | Clamps IQ increase during output saturation, preventing thermal stress in portable medical or handheld test equipment. |
| Output short-circuit protection | Allows safe operation in ruggedized industrial I/O modules where accidental shorts to supply or ground may occur. |
| Low harmonic distortion | HD2/HD3 = –129/–138 dBc at 20 kHz (2-VPP) ensures fidelity in audio-grade and ultrasonic flow meter signal chains. |
Applications
| ADC Driver | Photodiode TIA Interface |
|---|---|
Use Scenario: Driving SAR or ΔΣ ADC inputs with fast settling and minimal noise contribution. IC Role / Device Role / Timing Role: Precision buffer and gain stage between analog sensor and ADC sampling node. Use Value: 57-ns 0.1% settling time and 5.9-nV/√Hz noise preserve ENOB in 16-bit+ converters operating at ≥1 MSPS. |
Use Scenario: Converting weak photocurrents (nA–µA) from optical sensors into measurable voltage outputs. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current and wide bandwidth. Use Value: 0.73-µA max input bias current and 110-MHz bandwidth support high-speed optical detection in pulse oximetry or laser rangefinders. |
| Low-Side Current Sensing | Ultrasonic Flow Meter |
Use Scenario: Measuring load current by amplifying mV-level shunt resistor voltage drops. IC Role / Device Role / Timing Role: High-common-mode-rejection differential amplifier referenced to system ground. Use Value: Rail-to-rail input allows direct sensing at 0 V common-mode; CMRR ≥ 100 dB rejects noise from switching power supplies. |
Use Scenario: Conditioning echo signals in time-of-flight ultrasonic flow measurement systems. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth signal conditioner for 40–200-kHz burst reception. Use Value: 105-V/µs slew rate preserves pulse edge integrity; –138-dBc HD3 prevents harmonic interference in phase-difference calculations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6643 | Higher quiescent current (2.7 mA/ch), NRI/RRO input, 130-V/µs slew rate, 17-nV/√Hz noise | Better slew rate but higher power and noise; suited for high-speed video or RF IF stages, not low-power portable sensing | Select LMH6643 only when >100-MHz large-signal bandwidth is required and power budget allows ≥2× higher IQ. |
| OPAx837 | Lower quiescent current (600 µA/ch), NRI/RRO input, same GBWP (50 MHz) and slew rate (105 V/µs), 4.7-nV/√Hz noise | No rail-to-rail input; requires ≥1-V headroom from rails; better noise but limited input range in 3-V systems | Choose OPAx837 when ultra-low noise dominates design priority and input common-mode stays ≥1 V from supply rails. |
Compared with LMH6643 and OPAx837, the OPA2863DR uniquely balances rail-to-rail input/output operation, 700-µA power efficiency, and 110-MHz small-signal bandwidth-making it optimal for dual-channel, battery-powered precision analog front-ends where supply headroom and dynamic range are constrained.
Availability
OPA2863DR is available at Aetrix Electronics and suitable for low-power ADC driver, photodiode transimpedance amplifier, and low-side current sensing applications requiring stable component supply, long-term production continuity, and automotive-grade temperature resilience.
Supply support for OPA2863DR 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 high-performance op-amps and precision signal-chain solutions.
The OPAx863 family was designed specifically for low-power, high-speed analog signal conditioning in portable instrumentation, industrial sensing, and energy-efficient data acquisition systems-emphasizing rail-to-rail operation, thermal robustness, and ease of use in single-supply designs.
FAQ
What is the maximum supply voltage for OPA2863DR?
The absolute maximum supply voltage for OPA2863DR is 13 V (VS+ to VS–), but the recommended operating range is 2.7 V to 12.6 V. Operation at 12.6 V is supported across the full –40°C to +125°C temperature range with no derating, and electrical specifications including GBWP, slew rate, and noise remain guaranteed per the datasheet.
Does OPA2863DR support true rail-to-rail input with a 3-V supply?
Yes, OPA2863DR supports rail-to-rail input operation down to 2.7 V supply, with input common-mode range specified from VS– – 0.2 V to VS+ + 0.2 V. At VS+ = 3 V and VS– = 0 V, this translates to –0.2 V to +3.2 V, enabling direct interfacing with sensors or DACs operating near ground or supply rails without external level shifting.
How does the power-down feature work on OPA2863DR?
OPA2863DR has two independent power-down pins: PD1 controls Channel 1 and PD2 controls Channel 2. Driving either pin high (≥ VS+ – 0.5 V) enables normal operation; driving it low (≤ VS+ – 1.5 V) disables the corresponding amplifier, reducing its quiescent current to ≤1.5 µA. Turn-on delay is ≤6.5 µs with a 3-V supply.
Is OPA2863DR suitable for driving ADC reference buffers?
Yes, OPA2863DR is explicitly listed in the official applications for ADC reference buffering. Its low output impedance (<0.2 Ω at 1 MHz), low noise (5.9-nV/√Hz), and excellent DC precision (±0.4-mV VOS, ±1-µV/°C drift) make it ideal for stabilizing high-resolution ADC reference voltages while rejecting supply and layout-induced disturbances.
What package options are available for OPA2863DR?
OPA2863DR is offered in the SOIC-8 (D) package, which is the industry-standard 8-pin small-outline integrated circuit with 1.27-mm pitch and 4.9-mm × 3.9-mm footprint. This package is compatible with automated PCB assembly and provides adequate thermal performance (RθJA = 120.0°C/W) for typical board layouts with standard copper pour.
OPA2863DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 105V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- 110 MHz
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 700µA (x2 Channels)
- 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:
- 8-SOIC
OPA2863DR FAQ
1.How can I place an order for OPA2863DR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2863DR 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 OPA2863DR reliable?
The price and inventory of OPA2863DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2863DR is usually 5 days.
3.What payment methods are accepted for OPA2863DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2863DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2863DR?
OPA2863DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2863DR 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 OPA2863DR?
For technical support, including OPA2863DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2863DR requirements.
6.How does Aetrix verify that OPA2863DR is sourced from the original manufacturer or authorized distributors?
All OPA2863DR 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 OPA2863DR meets industry standards.
7.What is the process for return or replacement of OPA2863DR?
All OPA2863DR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2863DR, 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 OPA2863DR part is unused and in its original packaging.
Return procedure for OPA2863DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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