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Texas Instruments OPA863DBVR
- Part No.:
- OPA863DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA863DBVR.pdf
- Description:
- SINGLE-CHANNEL, LOW-POWER, 110-M
- Quantity:
- Payment:
- Shipping:
Inventory:661
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Product details
Overview
OPA863DBVR 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 serves as an ADC driver in portable data acquisition and sensor interface circuits.
For engineers reviewing the OPA863DBVR datasheet, OPA863DBVR pinout, OPA863DBVR application, or OPA863DBVR equivalent, key selection criteria include its 2.7–12.6-V supply range, power-down mode (≤1.5 µA), –40°C to +125°C operation, rail-to-rail I/O swing, and SOT-23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA863DBVR employs a bipolar input stage enabling wide common-mode input range (VS– – 0.2 V to VS+ + 0.2 V) and stable unity-gain operation. Its voltage-feedback architecture supports precise gain accuracy and fast settling (57 ns to 0.1%) without requiring external compensation.
It integrates overload power limiting to cap quiescent current during output saturation and features short-circuit protected output stage. Power-down control is implemented via a dedicated PD pin with 6.5-µs turn-on time and defined enable/disable thresholds referenced to VS+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 110 MHz - enables stable amplification of signals up to ~110 MHz at G = 1 V/V without oscillation |
| Gain-bandwidth product | 50 MHz - defines maximum usable gain × bandwidth product (e.g., 10× gain supports ≤5 MHz) |
| Slew rate | 105 V/µs - supports full-scale 2-V step transitions in under 20 ns, critical for fast-settling ADC drivers |
| Input voltage noise | 5.9 nV/√Hz - low-noise performance preserves SNR in precision analog front-ends like photodiode TIAs |
| Quiescent current | 700 µA/ch (typical) - enables continuous operation in always-on sensor nodes powered by coin cells or energy harvesters |
| Supply voltage range | 2.7 V to 12.6 V - supports single-supply 3.3-V microcontroller systems and dual-supply ±5-V instrumentation |
| Operating temperature | –40°C to +125°C - qualified for automotive cabin, industrial motor control, and outdoor IoT deployments |
Pinout & Package
OPA863DBVR is housed in a 5-pin SOT-23 (DBV) package, measuring 2.9 mm × 1.6 mm × 1.15 mm, with exposed pad for thermal enhancement and standard JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT | Output | Amplifier output node; rail-to-rail swing supports full dynamic range into 2-kΩ loads |
| VS– | Negative supply | Ground reference for single-supply operation or negative rail in dual-supply configurations |
| VS+ | Positive supply | Primary power connection; accepts 2.7–12.6 V; powers internal bias and output stage |
| VIN+ | Noninverting input | Differential input terminal; matched input impedance enables precision differential sensing |
| VIN– | Inverting input | Differential input terminal; used with feedback network to set closed-loop gain and stability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling from VS– to VS+ on both inputs and output-critical for low-voltage 3.3-V systems |
| Power-down mode | Reduces quiescent current to ≤1.5 µA (max) with 6.5-µs wake-up, extending battery life in intermittent-sampling applications |
| Overload power limiting | Prevents IQ escalation during output saturation, avoiding thermal runaway in sustained overdrive conditions |
| Output short-circuit protection | Guarantees safe operation when output is accidentally shorted to VS+ or VS–, enhancing field reliability |
| Low THD | –129 dBc HD2 / –138 dBc HD3 at 20 kHz (2-VPP) ensures clean signal integrity in audio and metrology paths |
Applications
| Low-power SAR ADC Driver | Photodiode Transimpedance Amplifier |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC in a portable gas sensor with 100-kSPS sampling and battery operation. IC Role / Device Role / Timing Role: Buffering and level-shifting photodiode current to match ADC input range while minimizing added noise and distortion. Use Value: 5.9-nV/√Hz input voltage noise and 110-MHz bandwidth preserve ENOB; 700-µA IQ extends coin-cell lifetime beyond 2 years. | Use Scenario: Converting weak photocurrent (100 pA–10 µA) from a silicon photodiode into a measurable voltage in optical smoke detection. IC Role / Device Role / Timing Role: High-gain transimpedance amplifier with low input bias current and low noise to maximize signal-to-noise ratio. Use Value: Input bias current ≤0.73 µA (25°C) and 5.9-nV/√Hz noise ensure minimal dark-current error and high sensitivity at low light levels. |
| Low-side Current Sensing | Ultrasonic Flow Meter Analog Front-End |
Use Scenario: Measuring motor phase current in a BLDC controller using a 10-mΩ shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail input to resolve mV-level drops across shunt at varying common-mode voltages. Use Value: Input CMVR from VS– – 0.2 V to VS+ + 0.2 V allows accurate sensing down to 0 V common-mode; 120-dB CMRR rejects supply noise. | Use Scenario: Conditioning echo return signals (200–500 kHz, <100 mVPP) in a clamp-on ultrasonic flow meter operating from 3.3-V supply. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth gain stage preceding envelope detection and time-of-flight measurement. Use Value: 110-MHz SSBW and 105-V/µs slew rate support clean amplification of fast-rising pulses; 125°C rating suits industrial pipe environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA863AIDBVR | High-precision variant with tighter offset voltage (±0.15 mV vs ±0.4 mV) and drift (±1 µV/°C vs ±3.5 µV/°C) | Required for DC-critical applications like precision reference buffers or strain gauge amplifiers where offset drift dominates error budget | Select OPA863AIDBVR when initial offset and temperature drift must be minimized; otherwise OPA863DBVR offers optimal cost/performance balance |
| LMH6643MMX/NOPB | Higher power (2.7 mA/ch), higher slew rate (130 V/µs), but higher noise (17 nV/√Hz) and non-rail-to-rail input | Better suited for high-speed video or RF IF stages where speed outweighs noise and supply headroom constraints | Choose LMH6643MMX/NOPB only when >100-MHz large-signal bandwidth is mandatory and 3.3-V rail-to-rail input is not required |
Compared with OPA863AIDBVR, the OPA863DBVR trades minor DC precision for lower cost and identical AC performance; compared with LMH6643MMX/NOPB, it delivers superior noise, rail-to-rail operation, and 76% lower quiescent current-making OPA863DBVR the preferred choice for battery-powered, precision analog signal chains.
Availability
OPA863DBVR is available at Aetrix Electronics and suitable for low-power ADC driver, photodiode TIA, and low-side current sensing applications requiring stable component supply, extended temperature operation, and SOT-23 footprint compatibility.
Supply support for OPA863DBVR 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 delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.
The OPAx863 family was designed specifically for high-speed, low-power signal conditioning in portable and ruggedized systems-emphasizing rail-to-rail operation, power-down capability, and robustness across –40°C to +125°C.
FAQ
What is the maximum supply voltage for OPA863DBVR?
The absolute maximum supply voltage (VS+ to VS–) for OPA863DBVR is 13 V, but the recommended operating range is 2.7 V to 12.6 V. Exceeding 12.6 V may compromise long-term reliability and is outside guaranteed specifications. The device is fully characterized from 3 V to 10 V, with validated performance at both extremes.
Does OPA863DBVR support true rail-to-rail input with a 3.3-V supply?
Yes, OPA863DBVR supports rail-to-rail input operation down to 2.7 V supply, including 3.3 V. Its input common-mode voltage range extends from VS– – 0.2 V to VS+ + 0.2 V, allowing valid operation with inputs at 0 V (GND) and 3.3 V-essential for interfacing with 3.3-V logic and ADCs without level-shifting.
How does the power-down feature work on OPA863DBVR?
The OPA863DBVR has no dedicated PD pin in the 5-pin SOT-23 (DBV-5) package-it is only available in the 6-pin variant (DBV-6). Therefore, OPA863DBVR operates in normal mode at all times. For power-down functionality, select OPA863DBVT (6-pin) or OPA2863 variants with explicit PD pins.
What is the typical input bias current of OPA863DBVR at 125°C?
The typical input bias current of OPA863DBVR at 125°C is 1.56 µA, as specified in Section 7.8 of the datasheet under "Input bias current" at TA = –40°C to +125°C. This value reflects worst-case leakage across temperature and ensures design margin for high-impedance sensor interfaces like photodiodes or pH electrodes.
Can OPA863DBVR drive a 500-Ω load while maintaining rail-to-rail output swing?
Yes, OPA863DBVR can drive a 500-Ω load with rail-to-rail output swing: typical VOL = VS– + 0.15 V and VOH = VS+ – 0.15 V at 25°C with 3.3-V supply. Output voltage swing remains within 150 mV of each rail under 25-mA sourcing/sinking, verified in Figure 7-17. Performance degrades slightly at temperature extremes but stays within 220 mV at 125°C.
OPA863DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- OPAx863
- Package/Case:
- SC-74A, SOT-753
- 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:
- 110 MHz
- 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-23-5
OPA863DBVR FAQ
1.How can I place an order for OPA863DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA863DBVR 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 OPA863DBVR reliable?
The price and inventory of OPA863DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA863DBVR is usually 5 days.
3.What payment methods are accepted for OPA863DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA863DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA863DBVR?
OPA863DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA863DBVR 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 OPA863DBVR?
For technical support, including OPA863DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA863DBVR requirements.
6.How does Aetrix verify that OPA863DBVR is sourced from the original manufacturer or authorized distributors?
All OPA863DBVR 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 OPA863DBVR meets industry standards.
7.What is the process for return or replacement of OPA863DBVR?
All OPA863DBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA863DBVR, 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 OPA863DBVR part is unused and in its original packaging.
Return procedure for OPA863DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA863DBVR Tags
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